InterviewSolution
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InterviewSolution
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.
| 201. |
Diversity in living organism occurs due to genetic variation . |
| Answer» Correct Answer - True | |
| 202. |
Fungi like ___________ have filamentaous body. |
| Answer» Correct Answer - mucor | |
| 203. |
Describe naerobic respiration. |
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Answer» (i) Some organisms cannot live in presence of oxygen . E.g. Many bacteria. (ii) Such living organisms have to perform anaerobic respiration for energy production. (iii) Glucose is incompletely oxidised and less amount of energy is obtained in anaerobic respiration. (iv) Glycolysis and fermentation are two steps of anaerobic respiration. (v) Pyruvic acid produced through glycolysis is converted into other organic acids or alcohol with the help of some enzymes. This is called as fermentation. (vi) Some higher plants, animals and aerobic microorganisms also perform anaerobic respiration if there is depletion of oxygen level in the surrounding. (vii) Example: Seeds perform anaerobic respiration if the soil is submerged under water during germination . (viii) Similarly, our muscle cells also perform anaerobic respiration while performing the exercise. (ix) Due to this less amount of energy is produced in our body and lactic acid accunulates in the muscles due to which we feel tired. |
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| 204. |
In ___________, chromosome number is reduced to half . |
| Answer» Correct Answer - meiosis | |
| 205. |
How does the growth of any living organism occur ? Does the number of cells in their body increase? If yes, how ? |
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Answer» (i) Growth of any living organism occurs due to cell division. (ii) Yes, the number of cells in their bosy increase. (iii) The number of cells increases by the process of mitosis. |
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| 206. |
Surrogacy |
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Answer» (i) Some women have problem in implantation of embryo in uterus . (ii) Such women can take the help of the modern remedial technique called as surrogacy . (iii) In this technique , oocyte is collected from the ovary of the women having problem in implantation in uterus . (iv) That oocyte is fertilized in test-tube with the help of sperms collected from her husband . (v) The embryo formed from such fertilization is implanted in the uterus of some other women having normal uterus. (vi) Such a woman, in whose uterus the embryo is implanted is called as surrogate mother . |
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| 207. |
Which method of reproduction is shown in the diagram? |
| Answer» Vegetative propagation | |
| 208. |
Which of the following is the only conducting tissues in non-flowering plants ?A. xylem vesselsB. sieve tubeC. companion cellsD. tracheids |
| Answer» Correct Answer - D | |
| 209. |
Sperm Bank/Semen Bank |
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Answer» (i) There are various problem in sperm production in case of many men like absence of sperms , slow movement of sperms , etc. (ii) So as to have children in case of such couples , new concept is similar to blook bank. (iii) Semen ejaculated by the desired men is collectedd after their thorough physical and medical checkup and stored in the sperm bank. (iv) As per the wish of the needful couple , oocyte of woman of the concerned couple is fertilized by IVF technique using the semen from the sperm bank . (v) Resultant embryo is implanted in the uterus of the same women . (vi) Name of the semen donor is strictly kept secret as per the law . |
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| 210. |
Give example of plant undergoing this method of reproduction ? |
| Answer» Raddish and carrot perform vegetative propogation through roots and sugarcane and grasses through buds . | |
| 211. |
The process of carrying food from the leaves to other parts of a plant is calledA. transpirationB. transportatingC. translocationD. transformation |
| Answer» Correct Answer - C | |
| 212. |
In humans , sperm production occurs in the organ _______ |
| Answer» Correct Answer - Testes | |
| 213. |
(a) Label the parts (A),(B) and (C) |
| Answer» (A) It is the Androecium of Anther and filament , (B) It is the Gynoecium with the stigma , style and ovary (C) It is the pedicel | |
| 214. |
In humans, __________ chromosomes is responsible for maleness. |
| Answer» Correct Answer - Y | |
| 215. |
Why do animals consume more energy as compared to plants |
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Answer» Plants do not move. Movements in a plant are at the cellular level. In a large plant body, there are many dead cells like schlerenchyma which are not involved in cellular function but provides strength to the plot .As a result it requires less energy. Animals , on the other hand need more energy to move from one place to another, in search of food and other activities, i.g., mating predation, shelter , etc. So ,the energy need is higher in them. |
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| 216. |
Which of the following is an incorrect statement ?A. Organisms grow with timeB. Organisms must repair and maintain their structureC. Movement of molecules does not take place among cellsD. Engery is essential for life processes |
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Answer» Correct Answer - c A cell is the basic structural and functional unit of a living being. Each cell is made up of molecules. The molecules exhibit movement during cellular reactions that lead to life activities but there movements of molecules do not take place in the cells. The growth of a living organism starts with the division of its cells . All living things have an organised structure, which if breaks down leads to various diseases, disorders and even death. Therefore , the living things have to repair and maintain their structures thruogh various processes. Theses life processes require energy which is obtained from food. |
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| 217. |
Which of the following statements about the autotrophs is incorrect?A. They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyllB. They store carbohydrates in the form of starchC. They corbon dioxide and water into carbohydrates in the absence of sulightD. They constitude the first trophic level in food chains |
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Answer» Correct Answer - c It is incorrect as , autotrophs can convert carbon dioxide and water into carbohydrates only in the presence of sunlight. The autotrophs contain the green pigment clled chlorophyll which is capable of trapping sun energy. This trapped energy is utilised by them to make food by combining inorganic materials like `CO_(2) and H_(2)O` by the process of photosynthesis. The food that is not used immediately , is stroed in the form of strach . Theses autotroophs constitute the first trophic level in food chains. |
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| 218. |
Which is the correct sequence of air passage during inhalation ?A. nostrils `rarr` larynx `rarr` pharynx `rarr` traches `rarr` lungsB. nasal passage `rarr` trachea `rarr` pharynx `rarr` larynx `rarr` alveoliC. larynx `rarr` nostrils `rarr` pharynx `rarr` lungsD. nostrils `rarr` pharynx `rarr` larynx `rarr` trachea `rarr` alevoli |
| Answer» Correct Answer - D | |
| 219. |
Lack of oxygen in muscles often leads to cramps among cricketers. This results due toA. ethanolB. carbon dioxideC. acetic acidD. lactic acid |
| Answer» Correct Answer - D | |
| 220. |
Choose the correct path of urine in our bodyA. Kidney `to` Ureter `to` Urethra `to` Urinary bladderB. Kidney `to` Urinary bladder `to` Urethra `to` UreterC. Kidney `to` Ureters `to` Urinary bladder `to` UrethraD. Urinary `to` Bladder `to` Kindney `to` Ureter `to` Urethra |
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Answer» Correct Answer - c The correct path of urne is kidney `to` Ureters `to` Urinary bladder `to` Urethra. The urine formed in each kidney eventually enters a long tube , the ureter, which connects the kidneys with the urinary bladder, Urine is stored in the urinary bladder until the pressure of the expanded bladder leads to the urge, to pass it out through the urethra. |
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| 221. |
Organ systems performing their functions in human body. |
| Answer» Digestive, respiratory, circulatory, excretory systems | |
| 222. |
In terms of chemistry what happens actually , when a molecule is oxidized ? |
| Answer» In terms of chemistry when a molecule is oxidized it gains oxygen or loss electrons or hydrogen. | |
| 223. |
Twins |
| Answer» Two embryos develop simultaneously in the same uterus and thus two offsprings are delivered simultaneously . Such offspring are called as twins . | |
| 224. |
Explain the process of breathing in man . |
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Answer» Breathing in humans involve following steps (i) Inspiration When we breathe in , the muscles between th e ribs contract causing the rib cage to move upward and outward , and the diaphragm contracts and moves downward . As the chest cavity becomes large, air is sucked in from outside into the lungs, the lungs get filled up with air and expand. (ii) Gaseous exchange Haemoglobin in RBCs binds with oxygen and carries it along the body , with blood . As blood passes through the tissues of the body , the oxygen from blood diffuses into the cell whereas `CO_(2)` produced during respiration diffuse into the blood and is carried to the lungs. (iii) Expiration When we breathe out, the muscles between the ribs relax causing the rib cage to move downward and inward and the diaphragm relaxes and moves upward . As the chest cavity becomes smaller , air is pushed out from lungs. |
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| 225. |
The opening and closing of the stomatal pore depends uponA. oxygenB. temperatureC. water in guard cellsD. concentration of `CO_(2)` on stomata |
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Answer» Correct Answer - c Large number of tiny pores called stomata are present on the surface of the leaves of plants. The gaseous exvhange as well as transpiration takes place through these pores. The opening and closing of the pore is a function of the guard cells. The guard cells swell when water flows into them,causing the stomatal pores to open. Similarly the pore closes if the guard cells shrink or losses water in them. |
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| 226. |
If the saliva is lacking in salivary amylase, then which of the following process taking place in the buccal cavity will be affected ?A. proteins breaking down into amino acidsB. starch breaking down into sugarsC. fats breaking down into fatty acids and glycerolD. intestinal layer breaking down leading to ulcers |
| Answer» Correct Answer - B | |
| 227. |
Two steps of Meiosis |
| Answer» Meiosis I and Meiosis II | |
| 228. |
Write the full form of FAD |
| Answer» Flavin adenine dinucleotide | |
| 229. |
Protein found in muscles |
| Answer» Actin and Myosin | |
| 230. |
Energy currency of the cell |
| Answer» Correct Answer - ATP | |
| 231. |
The two organisms which breathe only through their moist skin areA. fish and frogB. frgo and earthwormC. leech and earthwormD. fish and earthworm |
| Answer» Correct Answer - C | |
| 232. |
Energy currency (reservior) of the cells isA. DTPB. PDPC. ATPD. DDT |
| Answer» Correct Answer - C | |
| 233. |
Why are some patients of diabetes treated by giving injections of insulin? |
| Answer» Insulin is a hormone which is produced and secreted by a gland called pancreas. The function of insulin hormone is to lower the blood sugar level. Deficiency of insulin hormone in the body raises the blood sugar level causing a disease known as diabetes. The high sugar level in the blood of a diabetic person can lead to many harmful effects. Some persons having diabetes are treated by giving injections of insulin because addition of insulin hormore to blood lower the blood sugar level. | |
| 234. |
Sometimes , higher plants and animals too perform anaerobic respiration . |
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Answer» The process of respiration yeilds energy which occurs by the oxidation of foodstuffs. (ii) To perform aerobic respiration , higher plants and animals aerobic respiration . (iii) Cases when oxygen gets depleted these organisms respire anaerobically to obtain energy. (iv) Therefore, sometimes higher plants and animals too perform anaerobic respiration . |
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| 235. |
At the time of birth , there are ________ immature oocytes in the ovary of females foetus.A. 2-4 hundredB. 5-6 hundredC. 2-4 millionD. 8-10 million |
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Answer» Correct Answer - C `2-4` million |
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| 236. |
Stigma , style, anther , ovary . |
| Answer» Anther - other are female reproductive parts of a flower whereas anther is the male part . | |
| 237. |
Ovule: Seed :: Ovary :________ |
| Answer» Fruits - After fertilization , ovary develops into fruit , whereas ovules developo into seeds . | |
| 238. |
What are twins ? What are their types ? |
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Answer» (i) Two embryos develop simultaneously in the same uterus and thus two offsprings are delivered simultaneously . Such offsprings are called as twins. (ii) There are two main types of twins - monozygotic twins and dizygotic twins . (iii) Monozygotic twins are formed from single embryo. During early period of emrbyonic development ( within 8 days of zygote formation ) , cells of that embryo divide into two groups . (iv) Those two groups develop are two separate embryos and thus monozygotic twins are formed. (v) Such twins are genetically exactly similar to each other . So they are similar in appearance and their gender is also same i.e., both will be either boys or girls. (vi) In case of monozygotic twins, if the emrbyonic cells are divided into two groups 8 days after fertilization, there is high possibility of formation of conjoined twins ( Siamese twins ). Such twins are born with some parts of the body joined to each other . Some organs are common in such twins. (vii) Occasionally, two oocytes are released from the ovary of the women and both are fertilized by two separate sperms and two zygotes are formed. (viii) Two emrbyos are formed from those two zygotes adn both are separately implanted in the uterus and thus dizygotic twins are delivered after complete development . (ix) Such twins are genetically different and be same or different by gender . |
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| 239. |
Single embryo : Monozygotic twins :: Two embryos : ___________ |
| Answer» Dizygotic twins - Monozygotic twins are formed from single embryo whereas , dizygotic tiwns are formed two separate oocytes and sperms. | |
| 240. |
Twins formed from single embryo are called _______ twins. |
| Answer» Correct Answer - Monozygotic | |
| 241. |
_________ type of reproduction occurs without fusion of gametes. |
| Answer» Correct Answer - Asexual | |
| 242. |
Implantation of embryo occurs in ___________ |
| Answer» Correct Answer - uterus | |
| 243. |
What is a flower without part (C) called ? |
| Answer» It is called a sessile flower . | |
| 244. |
When a flower is called unisexual ? |
| Answer» A flower is called unisexual if any one of the two essential whorls are present in a flower . Eg. Papaya . | |
| 245. |
What is the importance of balanced diet for our body? |
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Answer» (i) Balanced diet is vital for the body and its systems to function properly. (ii) It will help to maintain a healthy weight, reduce body fat, provide your body with energy, promote good sleep , helps to fight diseases and generally make you fell better. |
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| 246. |
What are the methods used by plants to get rid of excretory products |
| Answer» plants can get rid of excess of water by transpiration. Waste materials may be stored in the cell vacuoles or as gum and resin, especially in old xylem. It is also stored in the leaves that later fall off. | |
| 247. |
Which of the following is the correct statement regarding bile ?A. secreted by bile duct and stored in liverB. secreted by gall bladder and stored in liverC. secreted by liver and stored in bile ductD. secreted by liver and stored in gall bladder |
| Answer» Correct Answer - D | |
| 248. |
Pancreatic juice contains enzymes which digest :A. proteins and carbohydrates onlyB. proteins and fats onlyC. fats and carbohydrates onlyD. proteins, fats and carbohydrates |
| Answer» Correct Answer - D | |
| 249. |
A__________ is formed in the process of fertilization by union of hypoid male and female gametes. |
| Answer» diploid zygote | |
| 250. |
A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water containsA. complex proteinsB. simple proteinsC. fatsD. starch |
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Answer» Correct Answer - d The blue - black colour of rice water confirms the presence of starch. No colour change will be seen in case of proteins or fats in iodine solution colour , when iodine is added with them. |
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