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65501.

why do magnetic field lines never intersect each other

Answer» Because at the point of intersection there will be two directions of magnetic field which is not possible
Because magnetic field lines have only one direction and that is North to South and it cannot go both the direction at same time
Because it is never observed a magnet showing 2 directions together at same time that is why it is said
Bcozz if they intersect then it would mean that at the point of intersection the compass needle has to point in two different directions which is nearly not possible....
65502.

Sexual reproduction promotes diversity of charecters in off springs?

Answer» Sexual Reproduction involves two parents, thus it involves two different Chromosomes. The offsprings inherit a nuclear set with traits from both the parents. Hence variation arises.Let us look at this way.\xa0Let\'s take Chromosome 19 (That\'s the chromosome which decides the colour of your hair.)Your mom is Blonde and has a genotype of BB\xa0Your dad is a Brunet and has a genotype bb.B is the dominant allele while \'b\' is the recessive allele.Let\'s make a Punnett square to see what your genotype.refer (Punnett Square 1)\xa0So you see, You are more likely to be a Blond but since you have a mixed phenotype, it is possible that your future progeny may receive the recessive trait and be brunet.\xa0Suppose you marry a person of a similar mixed Phenotype, hence he/she is also Bb.\xa0(Refer Punnett Square 2)Also, the Nuclear proteins,Adenine, Guanine, Cytokinin and Thymine change their orders to form different gene codes. This also brings variation.Read more on Brainly.in - https://brainly.in/question/1729413#readmore
65503.

Explain ohms law...

Answer» According to with law, current is directly proportional to potential difference and inversely proportional to resistance.
This law states that the current is directly proportional to the potential difference ends
Electric current is proportion to voltage and inversely proportion to resistance
According to thiss law when current passes in a conductor which is directly proportional to the potential difference
According to ohms law: current flowing under physical constant condition through a circuit is directly prportional to the potential diffrence.
65504.

Why did mendel choose pea plants for his experiments?

Answer» Yes u are correct
Becoz it is self pollinating plant, its life span is short so the nxt generations can be obtained vry frequently, it can be grown in large no.s in small area, it has seven opposite contrasting characters.......hope so i am correct....isn\'t it?
65505.

Why exact copies are not created in meiosis ?

Answer» Because the chromosome are half of female and half of male
65506.

What is covelent bond and ionic bond please explain me

Answer» Covalent bond are the bond formed by the mutal sharing of electrons among the combining atoms like carbon dioxide co2Ionic bond are formed by the giving the electrons to other atom like NaCl
Covalent bond are those bonds which are formed by sharing of electrons.They have low melting and boiling point.They have low electrical conductivity.Example - N2,O2,CO2 etc...Ionic bonds are those bonds which are formed by transfer of electrons.They have high melting and boiling point.They have high electrical conductivity.Example - Na2O,MgO etc..
Covalent bonds are the bonds which are formed by the transfer of electrons....
65507.

What is the role mesophyll cells?

Answer» The important role of mesophyll cell is in photosynthesis it is present in chloroplasts I hope my answer is right
65508.

Components of blood

Answer» RBC, WBC, Platlets along with plasma. Am i right.
65509.

How aids will get to person

Answer» 1. By the coitus to the aids person. 2. By the use of infected syrings . 3. By the use of the infected blood of the aids person. ...(coits = coital activity = ***)
By *** with infected personPerson is suffering from aids disease caused by hiv
65510.

What are digestive enzymes? What are their functions

Answer» Pepsin and trypsinPepsin converts the acidic food into basic medium so that trypsin can act. Trypsin can only perform in basic medium
65511.

I am weak in biology.how to score more marks?

Answer» Yes Chetna is correct that also understand the concepts of the topicd?
Don\'t just learn also understand all the concepts clearly u can score good ☺️
To read, learn and write the important questions and try to do better and better.
65512.

Draw the structure of cyclopentane

Answer»
65513.

List the source and function of all animals and plant hormones.

Answer» Plant Hormones\tAuxin helps in delaying the shedding of leaves.\tCytokinins help in stomatal opening.\tGibberellins help in controlling the elongation of the stem in young shoots.\tEthylene helps in stimulating fruit ripening and determining the *** of a flower.\tAbscisic acid helps in promoting bud dormancy and senescence of leaves.Animals Hormones\tHypothalamus Helps in maintaining the body temperature, controls sleep, hunger, thirst, emotions and moods.\tThyroid Gland produces the thyroxine hormone, which controls the metabolic rate in the body.\tParathyroid gland releases parathormone which helps in regulating the calcium and phosphorus levels in the bone.\xa0\xa0
65514.

Who proved magnetic effect of electric current and how??

Answer» The magnetic effect of electric current was discovered by H.C. Oersted in 1820. He observed that flow of electric current through a conductor produce a magnetic field around it. The magnetic effect of current can be demonstrated by doing following experiment.H.C. OerstedOersted Experiment to Demonstrate the Magnetic Effect of Electric Current First of all make a simple electric circuit by joining a long straight wire with a battery and a plug. Now, take a magnetic compass needle and place the straight wire parallel and over the compass needle. Then switch on the circuit so that current flows through the wire from south to north directions. Now, you will found that the north pole of compass needle gets deflected towards the west.
65515.

What is the formula of common salt

Answer» Nacl
Nacl
Na + cl = Nacl(sodium) (chloride) (sodium chloride i.e. common salt)
Sodium (Na)+ chloride(cl) = (Nacl) common salt
Nacl
65516.

Functional groups

Answer» Sorry one mistake it is not keron its keton
Alcohol = OHAldehide ÷CHOCarbolic acid= COOHkeron=CO
kon konse
65517.

What r the factors lead to evolution

Answer» Forces that drive evolutionCategorizing the processes that affect allele frequencies might be subject to issues of semantics. Without going into the details, we generally recognize 4 forces that drives evolution\tNatural selection: Natural selection refers to the deterministic change in allele frequency due to a differential in fitness among different genotypes. Sexual selection and artificial selection are typically considered as part of natural selection (although that may vary from author to author)\tGenetic Drift: Genetic Drift refers to the stochastic sampling process of individuals\tMutations: A mutation refers to any spontaneous change (substitution, indel, chromosome duplication, etc...) in an individual\'s genotype.\tGene flow : Gene flow refers to the transfer (migration) of DNA sequences among populations.
bhagwan ki daya
65518.

Which is better vegetable oil or ghee?

Answer» Vegetable oil is better
65519.

What is flame?

Answer» A hot glowing body of ignited gas that is generated by something on fire...
65520.

Why do some substances burn with flame and some without flame?

Answer» Only those substances, which vapourise during burning, produce flames. For example, kerosene oil and molten wax rise through the wick and are vapourised during burning and form flames.On the other hand, those substances which do not vapourise during burning do not give flame. For example, when coal is burnt, it does not produce a flame. The main reason why coal does not burn with a flame is that it does not vapourise during burning.
Because they do not burn.??
65521.

2016 board question and answer

Answer»
65522.

Define mendel second law of inheritence.

Answer» According to this law gamete formation, character get seggregates to form new gamete of new variety.
Mendel\'s laws of inheritance. Law. Definition. Law of segregation. During gamete formation, the alleles for each gene segregate from each other so that each gamete carries only one allele for each gene.
65523.

What are micelles? how are they formed? draw the diagram of a micelle

Answer» Micelles are lipid molecules that arrange themselves in a spherical form in aqueous solutions. The formation of a micelle is a response to the amphipathic nature of fatty acids, meaning that they contain both hydrophilic regions (polar head groups) as well as hydrophobic regions (the long hydrophobic chain).
65524.

Different in between vescotomy and cuvoctomi

Answer» In vesectomy : experts block the path of vas deferens through surgical methodIn tubactomy: expert block/cut the fallopian tube also by surhical method .
65525.

Name one male *** hormone and female *** hormone

Answer» Male - testosteroneFemale - oestrogen,progesterone
Male -testosterone . Female-estrogen
65526.

Draw the structure of flower and level it reproductive part

Answer»
65527.

What is phenotype trcut? Give example

Answer» Physical ratio of generation is knwm as phenotype ratio and genetically ratio is known as genotype ratio
65528.

Different in between homologous and heterologous organ

Answer» HOMOLOGOUS ORGAN:1) those organs which have same structure but different functions.2) example: structure of limbs of frog is similar with the structure of human\'s hand.HETEROLOGUS ORGAN:1)those organ which have different structure but same function.2) example: structure of wings of bat is not similar with the structure of bird\'s wing but Function is same both use wings for flying.
Homologous Structures have similar morphology, embryology and anatomy etc. but are dissimilar in their functions. ... Analogous structures are those structures in different species which perform the same function, have similar appearance and structure but are not evolved together; therefore do not share a common ancestor.
65529.

Write the function of stigma

Answer» In a flower, this landing zone and entrance is the stigma. It plays a pivotal role in reproduction. Most stigmas are adapted to trap pollen with hairs, flaps and other surfaces to increase their efficiency. Most stigmas are covered with a waxy, sticky substance.
65530.

What is dominant trait? How it is different from necssive trait

Answer» Dominant trait is that trait which is seen in first generation and the trait which is hidden in first generation is called recessive trait
The character which dominates the other character is known as dominant traits. It is different because it is the character which gets dominated.
Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive.
65531.

Write the function of ovary

Answer» In plants ovaries are responsible for fruit bcz the fruit is developed from the ovary
This is function of human female ovuary ?
The ovaries have two main reproductive functions in the body. They produce oocytes (eggs) for fertilisation and they produce the reproductive hormones, oestrogen and progesterone.
65532.

Write the function of pollintube

Answer» Pollen tubes are produced by the male gametophytes of seed plants. They act as conduits to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms
65533.

what is solar energy and how can we generate energy

Answer» It is a form of light which is obtained from the sunlight.we can generate solar energy by the help of solar panel and solar cooker to cook food or for many other things.
Usus of solar energy is uses in solar panel and solar cooker to heat food
It is the energy obtainted from the sun. Sun provides light and heat
65534.

About space

Answer»
65535.

What is dilution. Explain

Answer» Dilution of an acid or base means mixing an acid or base with water. This is done to decrease the concentration of ions ( H30+/0H-) per unit volume. In this way the acid or the base is said to be diluted.
65536.

What is diction. Explain

Answer»
65537.

Name a common nutrients that is absorbed in the small intestine and reabsorbed by the kidney tubules

Answer» Glucose is absorbed by the wall of small intestine
Glucose
Glucose or Amino acids
65538.

What is alelle??

Answer» Those pair of gene which present on the same position of homologous chromosome.
65539.

What is anomalies?

Answer» Anomalies means limitations or drawbacks or demerits.
65540.

One word 10 question answer of bio. Chapter 6.

Answer»
65541.

what is hytro cyclic reaction and its example plese fast to give me answer please please please

Answer»
65542.

Why carbon can not gain and loss 4 electrons ?

Answer» Carbon has electron confrigution of 2,4 it cannot loss or gain electrons because it requires more energy to gain or loss electrons so it form only covalent bond.
Bcz it requires more energy to loose or gain electron
Because carbon have enough atoms itself
65543.

Difference between mineral and an ore.

Answer» \tMineralsOresNaturally occurring substances of metals present in the earth’s crust are called minerals.Minerals which can used to obtain the metal profitably are called ores.All minerals are not ores.All ores are essentially minerals too.Example: Clay is the mineral of Aluminium. Examples: Bauxite and Cryolite are the main ores of Aluminium. \t
65544.

What is an ester.

Answer» The scientific name of ester is ethyl ethanoate. Ch3cooc2h5
When reaction between alcohol and ethonic acid take place .Then Ester is formed it has sweet smell in presence of H2So4 Reaction-Ch3-ch2-oh +ch3cooh =ch3cooch3 + H2o
It is a reaction between etanol and ethanoic acid in the presence of acid.
65545.

What is Atomic number of Ag,Au,pb

Answer» 47,79,82
65546.

Mention the part of the body where gustatory and olfactory receptors are located.

Answer» Gustatory :tongueOlfactory:nose
? Nose
65547.

CH3_ CH2OH

Answer» CH3CH2OH can also be written as C2H5OH which is ~Ethanol~ formula.
Most prob ethanol
65548.

Why does the carbon form component mainly by the covalent bonding

Answer» The atomic no. of carbon is 6 which means that a nutral atom of carbon contains 6 electrons .so, the electronic confugration of carbon is 2 nd 4 since a corbon atom has 4 electrons in tis outermost cell ,so it should either lose 4 electrons or gain 4 electrons to achieve the inert gas electron configuration and become stable,its not possible to remove 4 electrons from a carbon atom,its not possible to add as many as 4 electrons to a carbon atom,,therefore carbon atoms can achieve the inert gas electron arrangment only by the sharing of electrons,tthere fore ,carbon alwayz forms covalent bonds,,.
65549.

What is the use of contraceptive why we are using

Answer» Women could use items like the contraceptive sponge, diaphragm, female condom, cervical shield or cervical cap to prevent the sperm reaching the egg. The hormonal method of birth control interferes with the hormonal balance in a woman’s body in order to hamper fertilization, ovulation or fertilized egg implantation. It could be done with the help of contraceptive pills, estrogen and progestin-releasing patches or vaginal rings. Birth control injections are also available nowadays.
65550.

What are variegated leaves

Answer» A variegated leaf contains some part which is green and some part which is not green. The green part of the leaf is green in colour to the presence of chlorophyll and can perform photosynthesis, non green part does not have chlorophyll and hence is non-photosynthetic.