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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 68251. |
How can the cell or a battery have a charges and how it is stored?? |
| Answer» There are no\xa0batteries\xa0that actually\xa0store\xa0electrical\xa0energy; all\xa0batteries store energy\xa0in some other form. ... The space between the electrodes is filled with an electrolyte--an ionic liquid that conducts electricity. One electrode--the anode--permits electrons to flow out of it. The other--the cathode--receives them. A\xa0battery\xa0is a device that stores chemical\xa0energy\xa0and converts it to electrical\xa0energy. The chemical reactions in a\xa0battery\xa0involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work. | |
| 68252. |
Depict the event of fertilization |
| Answer» When a girl is born, the ovaries already contain thousands of immature eggs. On reaching puberty, some of these start maturing. One egg is produced every month by one of the ovaries. The egg is carried from the ovary to the womb through a thin oviduct or fallopian tube. The two oviducts unite into an elastic bag-like structure known as the uterus. The uterus opens into the ****** through the cervix. The sperms enter through the vaginal passage during sexual intercourse. They travel upwards and reach the oviduct where they may encounter the egg. The fertilised egg, the zygote, gets implanted in the lining of the uterus, and starts dividing.The release of an ovum from an ovary is called ovulation. In human females, the ovaries start releasing ovum once every 28 days from the age of puberty. Fertilisation is possible if mating takes place during the middle of menstrual cycle because in a normal healthy girl the ovulation takes place on the 14th day of the beginning of menstrual cycle of 28 days. The embedding of embryo in the thick lining of the uterus is called implantation. | |
| 68253. |
Define cancave and canvex mirror |
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Answer» CONCAVE MIRROR :- a spherical mirror which reflecting surface curved inward is called concave mirror.CONVEX MIRROR:- as spherical mirror with reflecting surface curved out ward is called convex mirror. Concave MirrorWe know that a cut out of a reflective sphere is a spherical mirror. If the reflective surface is on the side curved inwards, it is a concave mirror. Concave mirrors are commonly used as shaving mirrors or by dentists and even in telescopes. The reflected image is magnified but the field of view is limited. Concave mirrors are also called converging mirrors.Convex MirrorSimilarly, if the reflective surface is curved outwards, it is a convex mirror. Convex mirrors are used extensively as part of car mirrors. Depending on the focal length, the reflected image is reduced in size but the field of view is more. This is very useful for drivers as the blind spots are drastically reduced. Convex mirrors are also called fish eye or diverging mirrors. You can recognize these mirrors easily as the outward bulge is quite evident most of the time Concave lense is a lense sphere of the lenseConvex lens is a lense that curved outer part of the eye Concave MirrorWe know that a cut out of a reflective sphere is a spherical mirror. If the reflective surface is on the side curved inwards, it is a\xa0concave mirror. Concave mirrors are commonly used as shaving mirrors or by dentists and even in telescopes. The reflected image is magnified but the field of view is limited. Concave mirrors are also called converging mirrors.Convex MirrorSimilarly, if the reflective surface is curved outwards, it is a\xa0convex mirror. Convex mirrors are used extensively as part of car mirrors. Depending on the focal length, the reflected image is reduced in size but the field of view is more. This is very useful for drivers as the blind spots are drastically reduced. Convex mirrors are also called fish eye or diverging mirrors. You can recognize these mirrors easily as the outward bulge is quite evident most of the time. |
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| 68254. |
What are hetrotrophe |
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Answer» Those animals eats only green plants and also make own food Heterotrophic cannot synthesize their own food and rely on other organisms- both plants and animals-for nutrition Organisms which cannot produce it\'s own food, depend on other organisms for food. An organisms deriving it\'s nutritional requirements from complex organic substances are called hetrotrophe heterotrophs are known as consumer because they consume producers or other consumers. dogs, birds , fish, and humans are also example of heterotrophic. |
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| 68255. |
How much does the earth weight? |
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Answer» Now join the link R u ready for study with friends.. 6 ×10 ^24 6×10²⁴kilograms or1.3×10²5 pounds 5.972 × 10^24\xa0kg.....hope this helps uhh? |
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| 68256. |
What happens in the gray zone between solid and liquid. |
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Answer» Join this meet.google.com/vkd-rwgd-dbx From\xa0liquid\xa0to\xa0solid\xa0or\xa0solid\xa0to\xa0liquid\xa0the transition has to cross the\xa0grey zone. This\xa0grey zone\xa0transition is is very crucial which includes the inter molecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot......hope this helps uhh ? |
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| 68257. |
Define taxonomy. ?? |
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Answer» The science used in biology for naming plants and animals..... Hopes it helps uh? Taxonomy is the science of naming, describing and classifying organisms and includes all plants, animal and microorganism of the world. the classification of something, especially organisms. |
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| 68258. |
Define the principle focus of the concave mirror. |
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Answer» Principal focus for concave mirror is that point at which all the light rays converges The principle focus of concave mirror is a point on its principle axis to which all the light rays which are parallel and close to the axis, converge after reflection from the mirror......hope this helps uhh? Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror. |
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| 68259. |
what happens when humans eat non biodegradable things |
| Answer» humans will diedue to improper digestion and ingestion of toxic substances | |
| 68260. |
Magnesium + Oxygen®Magnesium oxide(1.1) (Reactants)(Product) |
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Answer» 2Mg +O2----------2MgO 2Mg+ 2o =2mgo |
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| 68261. |
What is hemo dialysis |
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Answer» Hemodialysis is a procedure where a dialysis machine and a special filter called an artificial kidney are used to clean your blood. To get your blood into the dialyzer, the doctor needs to make an access, or entrance, into your blood vessels. This is done with minor surgery, usually to your arm........ hope this helps uhh? Partial or total inability of kidneys to carry on excretory and salt water regulatory function is called renal or kidney failure.It occurs due to injury,infection r restricted blood flow to kidneys .In such cases,blood urea rises abnormally which can even led to death.For the an artificial kidney is used to filter the blood of patient.For this purpose a dialysis machine is used.The process of purifying the blood by an artificial kidney is called Haemodiaosis |
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| 68262. |
What is mechanism of photosynthesis? Explain clearly. |
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Answer» Photosynthesis is the process by which green plants prepare their food in the presence of sunlight. Green plants utilise carbon dioxide and water to make carbohydrate. The reaction of photosynthesis can be depicted in the following equation:6CO2+12H2O---chlorop-hyll+sunlight----------->\u200bC6H12O6+6O2\u200b+6H2\u200bO....The process of Photosynthesis is composed of following step:(a) Absorption of light energy by chlorophyll.(b) Conversion of light energy into chemical energy(c) splitting of water molecules into hydrogen and oxygen.(d) Reduction of carbon dioxide to form carbohydrate\xa0These steps need not take place one after another immediately. For example; desert plants take up carbon dioxide at night to make an intermediate. During daytime. they make carbohydrate. After photosynthesis, carbohydrate is converted into starch and starch is stored in different plant organs......hope this helps uhh? Carbon dioxide is converted into sugars in a process called carbon fixation; photosynthesis captures energy from sunlight to convert carbon dioxide into carbohydrate. Carbon fixation is an endothermic\xa0redox\xa0reaction. |
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| 68263. |
Is Speciation topic (heredity and evolution) remove from the syllabus ?? |
| Answer» yes, as full evolution part is deleted so speciation comes under evolution only. | |
| 68264. |
“We need to balance a skeltal chemical equation.” Give reason to justify the statement. |
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Answer» As it fulfills the law of conservation , which is must To satisfy law of conservation of mass Balanced chemical equation:\xa0A chemical equation in which the number of atoms of reactants are equal to the number of atoms of products is called a balanced equation.We need to balance a skeletal chemical equation because:i. According to the law of conservation of mass, mass (or atoms) are neither created nor destroyed in chemical reactions.ii. It means the total mass of the products formed in chemical reaction must be equal to the mass of reactants consumed. Thx We need to balance a skeletal chemical equation becauseAccording to the law of conservation of mass, mass (or atoms) are neither created nor destroyed in chemical reactions. It means the total mass of the products formed in chemical reaction must be equal to the mass of reactants consumed......... hope this helps uhh? |
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| 68265. |
Explain mendelives monohybrid theory |
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Answer» Monohybrid Cross\xa0-\xa0A cross which involves only a single pair of contrasting characters.\tConsider pea plants with a pair of contrasting characters—tallness and dwarfness—with respect to the height of the stem. Because pea plants are self-fertilising, Mendel bred them for several generations till he obtained pure varieties. The parental generation P1\xa0has the genotype TT for a pure tall parent plant and tt for a pure dwarf plant. The two parents are homozygous with one type of gamete each, i.e. T from tall parent and t from dwarf parent. These two plants are crossed with one another.\tMendel found that all plants were tall. He called them first filial or F1\xa0generation seeds. The F1\xa0generation has genetic constitution Tt. It is genotypically a hybrid and a heterozygous plant with two different alleles. Phenotypically, the plant is tall because the allele or the gene T for tallness masks the effect of its corresponding recessive gene t.\tF1\xa0plants are self-pollinated to obtain the F2\xa0generation.\tThe second filial generation F2\xa0has a genotypic ratio of 1 TT:2 Tt:1 tt. In this case, because the allele T for tallness is dominant, the pea plants with genotype Tt will be tall. The phenotypic ratio is 3 tall:1 dwarf. Genotypically, it shows 3 types of plants: 1 TT, which is homozygous tall, 2 Tt which are heterozygous tall and 1 tt which is homozygous dwarf. Thus, the genotypic ratio is 1 TT:2 Tt:1 tt. I hope this is helpful to you ?? A monohybrid cross is a genetic mix between two individuals who have homozygous genotypes, or genotypes that have completely dominant or completely recessive alleles, which result in opposite phenotypes for a certain genetic trait.... |
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| 68266. |
What is parent hydrocarbon?? |
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Answer» Parent Hydrocarbon is the main straight chain of Hydrocarbon for which we use the term linke meth, eth, prop depending on the number of carbon atoms in the chain. Parent Hydrocarbon\xa0is the main straight chain of\xa0Hydrocarbon\xa0for which we use the term linke meth, eth, prop depending on the number of carbon atoms in the chain.\xa0A\xa0hydrocarbon\xa0is an organic chemical compound composed exclusively of hydrogen and carbon atoms.\xa0Hydrocarbons\xa0are naturally-occurring compounds and form the basis of crude oil, natural gas, coal, and other important energy sources.\xa0Petroleum\xa0and\xa0coal\xa0are the major sources of hydrocarbons. |
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| 68267. |
What is Archmities principal ? |
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Answer» Fossils are the remains or impressions of organisms that lived in the remote part. They are helpful in study of evolution as.................. 1. They give us an idea of the time in history when different species were formed or become extinct............. 2. They also help us to trace the evolutionary history of some animals.......... 3. Fossils also indicate connecting link between two groups of organisms, e.g. Archaeopteryx is a connecting link between reptiles and birds. Explain the importance of fossils in deciding evolutionary relationship The upward buoyant force that is exerted on a body immersed in a fluid, whether partially or fully submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid....... hope this helps uhh? |
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| 68268. |
https://www.facebook.com/103267231505909/videos/1296473827366040/ |
| Answer» | |
| 68269. |
How is bleaching powder obtained? |
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Answer» Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime (Ca(OH)2).Ca(OH)2\xa0+\xa0Cl2\xa0→\xa0CaOCl2\xa0+\xa0H2O Plzz thnkx button click kr Dena BSS Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime (Ca (OH)_2). |
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| 68270. |
Aeyjgd |
| Answer» Aryan what do you want to say??? | |
| 68271. |
Transfer of egg into the fallopian tube iscarried out by |
| Answer» Fallopian tubes, or oviducts, connect the ovaries and uterus. They are also the place where the egg and sperm meet and fertilization occurs, in addition the tubes have the ability to carry the eggs/embryos to the uterus | |
| 68272. |
Differentiate between concave and convex lens |
| Answer» DIFFERENCE B/W CONCAVE AND CONVEX LENS:-1)Concave lens are thinner at middle and thicker at edges, while Convex lens are thicker at middle and thinner at edges. 2)Concave lenses are used in telescopes, photography and to cure myopiaetc., while Convex lenses are used in cameras, magnifying glass, microscope and to cure hypermytropia etc. 3)Concave lenses have negative focal length while convex lenses have positive focal length. 4)Concave lens are also known as diverging lens, while convex are also known as converging lens. 4)Concave lenses always form erect and vitual image, while convex lenses form real-inverted as well as erect-virtual. 5)Concave lenses diverges the incident ray coming parallel to principal axis, while convex lenses converges the incident ray coming parallel to principal axis. | |
| 68273. |
What is the importance of DNA copying in reproduction ? |
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Answer» DNA-(deoxyibose nucleic acids) DNA copying leads to the formation of two exactly identical cell but any error in duplication can lead to dissimulation cells of variations The copying of DNA during reproduction is important because:\tThe replication of DNA ensures that each daughter cell formed at the end of cell division, receives equal amount of DNA.\tIf DNA won\'t be copied then the daughter cells won\'t receive all necessary genes.\tThere may be absence of important proteins which are encoded by DNA, if DNA won\'t be replicated.\tCopying of DNA may result in recombination which will lead to evolution.\tTransfer of genetic material from one generation to other makes the organisms to have similar functions.\tStability of population is maintained. DNA ? copying is important during reproduction because it leads to the transmission of characters from parents to the offsprings and bring about variations. Hope it helped you..... Thanks, Regards |
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| 68274. |
Why is DNA copying an essential part of the process of reproduction. |
| Answer» DNA ? copying is an issential part of reproduction because it leads to the transmission of characters from parents to the offsprings and bring about variations.Hope it helped you.....Thanks,Regards | |
| 68275. |
H2so4 |
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Answer» Its form is Hydrosulphate. Please next time write complete question. Pls write a complete and right questions |
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| 68276. |
What is insultar |
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Answer» Insulators are those materials which allows negligible current to flow from them Insulator are the bad conductor of heat,electricity which does not allow heat, electricity to pass through them |
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| 68277. |
Explain sexual reproduction in flowering plant. Pls answer the question in points |
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Answer» i. Stamen is male reproductive part of flower which produces male gamete(pollen grains)ii. Carpel is female reproductive part which produces female gamete (ovules)iii. After pollination, a pollen tube arise from the pollen grain in style that reaches the ovary iv. In ovary fertilization(fusion of male and female gamete) occurs. Fertilization give rise to zygote_embryo i.\xa0The flower\xa0is the reproductive organ in sexually reproducing plants.ii. Stamen is the male organ and carpel is the female organ\xa0of\xa0the flower.iii. Flowers having both stamens and carpels are called bisexual flowers.iv. Stamens produce male gametes called pollen grains, and carpels produce female gametes called ovules or egg cells inside ovaries.v. Fertilization of the egg cell by the pollen grain takes place in the ovules. |
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| 68278. |
What is the unique properties of carbon atom ?How is this property helpful to us? |
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Answer» Unique property of carbon is catenation which is the ability to form bonds with other bonds of carbon, giving rise to large molecules. These bonds formed are very strong and are Long chains H |
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| 68279. |
What is the full Dental Formula of Humans ? |
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Answer» 2123/2123 The Dental Formula is expressed as:(The number of each type of teeth in the upper jaw) / (The number of teeth on one side of the lower jaw)\t Dental Formula = (2 incisors 1 canine 2 premolar 3 molar) / (2 incisors 1 canine 2 premolar 3 molar)\tHumans have two dental formulae:The primary dentition (20 teeth):I2/2 C1/1 M2/2 = 10The permanent dentition (32 teeth):I2/2C1/1 P2/2 M 3/3 = 16.Where: I – Incisors, C-Canine and M-MolarAmong all other mammals, both humans and apes have similar sets of teeth and dental formulae. In humans, the deciduous dentition consists of 20 total teeth, with the dental formula 2102 (or 2102/2102), indicating two incisors, one canine, zero premolars, and two molars in each quadrant. Answer is 2123 |
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| 68280. |
Why are testis located outside in ******* |
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Answer» Human testes responsible for synthesis of male gametes (sperms) need slightly lower temperature than the normal body temperature for this function. Thus, are located outside the abdominal cavity in sac-like structure called *******. Between the legs |
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| 68281. |
What is blood vessels |
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Answer» Blood vessels\xa0are the channels or conduits through which\xa0blood\xa0is distributed to body tissues. The\xa0vessels\xa0make up two closed systems of tubes that begin and end at the heart. One system, the pulmonary\xa0vessels, transports\xa0blood\xa0from the right ventricle to the lungs and back to the left atrium \tBlood vessels are the tube like structures which carry the blood through cells, tissues and organs.\tTwo types of blood vessels are arteries and veins which are connected to the heart for transporting blood.\tArteries –\tCarry blood rich in oxygen from the heart to all the cells of the body.\tThe pressure exerted by the arteries while blood leave heart is rapid and thus wall walls of arteries are thick.\tVeins –\tVeins carry blood rich in carbon di oxide from all the cells of the body to the heart.\tThe pressure exerted by the walls of the veins is less and have thin walls.\tValves present in the veins ensure that the blood flows only towards the heart. |
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| 68282. |
What is difference between nutrition and respiratory system |
| Answer» Nutrition is the process of obtaining food by the organism and digesting the complex nutrients in the food. In respiration, the energy present in the food (taken in through nutrition) is released and used to carry out the bodily processes. | |
| 68283. |
What are changes occur in female body? |
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Answer» Changes that occur in girls -1. Development of breasts and mammary glands.2. Beginning of ovulation3.hair under armpits and genital area4. Release of progesterone and estrogen. out of control means ? During puberty, your body releases hormones that stimulate your ovaries to start producing the female hormone estrogen. Gradually, a girl\'s body starts changing into a woman\'s body. But these surging hormones can also make your mood go up and down -- and sometimes it may seem as if your body is out of control. |
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| 68284. |
Metal and non metal properties |
| Answer» Physical Properties of MetalsSome physical properties of metals are listed below.\tShiny (lustrous) in nature\tMetal is a good conductor of electricity and heat\tDensity and melting point is high\tMouldable (Malleable)\tDuctile\tAt room temperature, it is in solid form except for mercury\tOpaqueChemical Properties of MetalsSome chemical properties of metals are listed below.\tEasily corrodible\tCan lose electrons\tForm basic oxides\tHave\xa0low electronegativities\tGood\xa0reducing agentsPhysical Properties of Non-metalsSome physical properties of non-metals are listed below.\tPoor conductors of electricity and heat\tNon-Ductile metals\tBrittle solids\tMaybe solids, liquids or gases at room temperature\tThese are not sonorous\tTransparentChemical Properties of Non-metalsSome chemical properties of non-metals are listed below.\tThe number of electrons in the outer shell is generally 4-8\tEasily gain or lose valence electrons\tForm acidic oxides whenever they come in contact with oxygen\tHigh electronegative elements\tGreat oxidizing agents | |
| 68285. |
Write down the preparation and uses of chlor alkalie process |
| Answer» The most common\xa0chloralkali process\xa0involves the electrolysis of aqueous sodium\xa0chloride\xa0(a\xa0brine) in\xa0a\xa0membrane cell.\xa0A\xa0membrane, such as one made from Nafion, Flemion or Aciplex, is\xa0used\xa0to prevent the reaction between the\xa0chlorine\xa0and hydroxide ions.\xa0The chlor-alkali electrolysis process is used in the manufacture of chlorine,\xa0hydrogen, and\xa0sodium hydroxide\xa0(caustic) solution. Of these 3, the primary product is chlorine. Chlorine is 1 of the more abundant chemicals produced by industry and has a wide variety of industrial uses. | |
| 68286. |
Why do calcium float in water? |
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Answer» Because H2 stick on calcium metal. The reaction of calcium with water is less violent. So, the heat released is not sufficient for the hydrogen to catch fire. Calcium starts floating because the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the metal and hence calcium floats on water. |
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| 68287. |
Explain in detail the process of respiration in humans |
| Answer» The major organs of respiratory system in human beings are: (i) Nose (ii) Nasal Passage (iii) Trachea (iv) Bronchi (v) Lungs and (vi) diaphragm.In human beings, air is taken into the body through the nostrils, is filtered by fine hairs that line the passage. When air passes through the nasal passage, the dust particles and other impurities present in it are trapped by nasal hair and mucus so that clean air goes into the lungs. From here, the air passes through the throat and into the lungs. Trachea does not collapse even when there is no air in it because it is supported by rings of soft bones called cartilage.Within the lungs, the passage divides into smaller and smaller tubes which finally terminate in balloon-like structures which are called alveoli. The alveoli provide a surface where the exchange of gases can take place. The walls of the alveoli contain an extensive network of blood-vessels. When we breathe in, the ribs are lift up and the diaphragm flattens which increases the size of the chest cavity. Because of this, air is sucked into the lungs and fills the expanded alveoli. The blood brings carbon dioxide from the rest of the body for release into the alveoli, and the oxygen in the alveolar air is taken up by blood in the alveolar blood vessels to be transported to all the cells in the body. During the breathing cycle, when air is taken in and let out, the lungs always contain a residual volume of air so that there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released.\xa0 | |
| 68288. |
What is equivalent resistance ? |
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Answer» Thanks Total resistance in a given circuit.Depends upon the circuit. For series: R=R1+R2+R3.... and so onFor parallel: 1/R=1/R1 + 1/R2 +1/R3... And so on. equivalent resistance is the algebraic sum of the resistance the current through the circuit can be found from ohm\'s law and is equal to the voltage divided by the equivalent resistance Havled of resistance |
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| 68289. |
Co2 formula |
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Answer» Carbon dioxide carbon diaoxode carbon dioxide Carbon dioxide Carbon dioxide |
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| 68290. |
What is Plasmid ? |
| Answer» Plasmid\xa0refers to the separated DNA molecule from chromosomal DNA, which has the ability to replicate on its own.\xa0Plasmids\xa0are known to be small, circular molecules of DNA that have the ability to replicate independently, as they do not depend on the organism\'s chromosomal DNA for replication. | |
| 68291. |
What is linear magnification? Does it have any unit? |
| Answer» Linear magnification\xa0(m) has no unit since it is the\xa0ratio of the height of the image to the height of the object. Magnification produced by a spherical mirror gives the relative extent to which the image of an object is magnified with respect to the object.m\xa0 | |
| 68292. |
Crystals of ionic compounds have geometrical shape.give reason |
| Answer» \tIons bound together by electrostatic attraction form ionic crystals. Their arrangement varies depending on the ions’ sizes or the radius ratio (the ratio of the radii of the positive to the negative ion). A simple cubic crystal lattice has ions equally spaced in 3D at 90° angles.\tStability of ionic solids depends on lattice energy, which is released in the form of heat when two ions are brought together to form a solid. Lattice energy is the sum of all the interactions within the crystal.\tThe properties of ionic crystals reflect the strong interactions that exist between the ions. They are very poor conductors of electricity, have strong absorption of infrared radiation, and are easily cleaved. These solids tend to be quite hard and have high melting points. | |
| 68293. |
Difference between External fertilization and internal fertilaization |
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Answer» \tInternal FertilizationExternal FertilizationWhat is meansFusion of gametes within the body of the femaleUnion of the gametes in an external environment(Water bodies)Quantity of gametes releasedLesser is released and deposited inside the body of the femaleMultiple gametes(both male and female) released into the external environmentGametes involvedOnly male gametes are discharged into the female genital tractBoth female and male gametes are discharged into the external surroundingsSite of further developmentInside the female bodyOutside the bodyTypesViviparityOviparityOvoviviparityNo types as such, external environment\t Listed below are some significant differences between internal and external fertilizationInternal FertilizationExternal FertilizationWhat is meansFusion of gametes within the body of the femaleUnion of the gametes in an external environment(Water bodies)Quantity of gametes releasedLesser is released and deposited inside the body of the femaleMultiple gametes(both male and female) released into the external environmentGametes involvedOnly male gametes are discharged into the female genital tractBoth female and male gametes are discharged into the external surroundingsSite of further developmentInside the female bodyOutside the bodyTypesViviparityOviparityOvoviviparityNo types as such, external environmentMeritsHigh survival chances as nourished by parentSuccessful fertilization rate is highChances of success of survival in harsh conditions are highOffsprings produced are manyFinding a mate requires less energyCompetition between parents and their offsprings is lessDemeritsFinding a mate requires much energyMost of the contribution is from the female counterpartFew offsprings producedAs they get preyed upon easily and lack of parental care results in lesser survival chancesMost of the offsprings go unfertilized, failing to survive until attaining maturitySurvival restricted to moist and wet environment onlyExamplesReptiles, Birds, Mammals, Tracheophytes, PteridophytesAlgae, Fish, Amphibians Internal fertilization\xa0is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast,\xa0External fertilization\xa0is the syngamy outside the female body, that is\xa0in the\xa0outer environment especially in water bodies. |
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| 68294. |
Can l get Science sample question paper 2019 with solutions..plz someone help me out with this |
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Answer» It is available in this app...(last year paper also).. You can purchase sample paper In this (my CBSE guide app )u will get all last year\'s sample papers with solutions. |
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| 68295. |
Heridty and evolution ch question answered |
| Answer» | |
| 68296. |
What is the difference between total resistance and equivalent resistance? |
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Answer» There are no major difference between total resistance and equivalent resistance The equivalent resistance is where the total resistance connected either in parallel or in series. Electrical resistance shows that how much energy will be required when we move the charges i.e.\xa0current through the circuit. If we need lots of energy, then the resistance necessary should also be high. The equivalent resistance of a network is the single resistor which can replace the entire network in such a way that for a certain applied voltage as V we will get the same current as I. |
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| 68297. |
What is equivalent resistance between A and B? |
| Answer» Please drop the image of question here or write the value of given content...then you will get the correct answer.? | |
| 68298. |
What are the 18 isomers of octane? |
| Answer» \tOctane2-Methylheptane3-Methylheptane4-Methylheptane2,2-Dimethylhexane2,3-Dimethylhexane2,4-Dimethylhexane2,5-Dimethylhexane3,3-Dimethylhexane3,4-Dimethylhexane3-Ethylhexane2,2,3-Trimethylpentane2,2,4-Trimethylpentane2,3,3-Trimethylpentane2,3,4-Trimethylpentane2-Methyl-3-ethylpentane3-Methyl-3-ethylpentaneTetramethylbutane\t | |
| 68299. |
What are the 9 isomers of heptane? |
| Answer» \tHeptane\t2-Methylhexane\t3-Methylhexane\t2,2-Dimethylpentane\t2,3-Dimethylpentane\t2,4-Dimethylpentane\t3,3-Dimethylpentane\t3-Ethylpentane\t2,2,3-Trimethylbutane | |
| 68300. |
What is relative refractive index ? |
| Answer» The ratio of the speed of light in a vacuum to the speed of monochromatic light in the substance of interest. Also called the absolute index of refraction it is commonly called the refractive index or index of refraction. However, those two terms are also sometimes applied without warning to the ration found when the ray emerges into the air instead of a vacuum. That ratio should be called a relative refractive index.The ratio of the first value to the second one is about the relative refractive index of the glass. In the case of a concave surface, beams originally propagating along the main optical axis will be refracted in such a way that they will never intersect. | |