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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.

3551.

Question : Give one example, of following : Which synthesises auxin ?

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SOLUTION :SHOOT TIP
3552.

Question : Give one example, of following :Which is (i) positively phototropic and (ii) negatively geotropic.

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SOLUTION :(i) Phositively phototrypic - Root
(II) NEGATIVELY geotropic - SHOOT
3553.

Question : Give one example of each of these nutrition.

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Solution :Example of AUTOTROPHIC nutrition - Green PLANTS preparing their FOOD in presence of sunlight , `CO_2` and `H_2 O` . This process is CALLED photosynthesis.
Example of Heterotrophic nutrition - Tiger eating a DEER or bacteria deriving its nutrition from dead organisms.
3554.

Question : Give one example of Chemotropism.

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SOLUTION :The growth of POLLEN TUBE towards OVULE.
3555.

Question : Give one example for each of the following: (i) Plants in which vegetative propagation occurs by grafting? (ii) Plants in which vegetative propagation occurs by leaves ?

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SOLUTION :(i) ROSE
(II) BRYOPHYLLUM
3556.

Question : Give one example each of unicellular and multicellular organism.

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CHLAMYDOMONAS and Paramecium respectively
Plant and BACTERIA respectively
Amoeba /HUMAN being respectively.
Bacteria and Amoeba respectively

Answer :C
3557.

Question : Give full form of CPCB, MPN

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Solution :CPCB - CENTRAL Pollution Control BOARD MPN - Most PROBABLE Number
3558.

Question : Give full form : HIV- AIDS

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Solution :HIV : Human Immunodeficiency VIRUS
AIDS : Acquired Syndrome IMMUNO DEFICIENCY
3559.

Question : Give example of involuntary action.

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Solution :INVOLUNTARY action : BEATING of heart, SALIVATION in the mounth on chewing of TASTY food.
3560.

Question : Draw a neat labelled diagram of internal structure of Kindey. Write the function of Renal artery and Renal vein.

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SOLUTION :
3561.

Question : Draw a neat diagram of the human male reproductive system and label the parts performing the following functions : (a) Production of sperms.(b) Gland which provides fluid. (c) Provides low temperature for the formation of sperms. (d) Common passage for sperms and urine.

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Solution :
Sexually transmitted disease - AIDS
PREVENTION : (i) By using PHYSICAL barrier like CONDOM.
(ii) AVOIDING MULTIPLE sex-partners.
3562.

Question : Draw a neat diagram of human male reproductive system and label the parts: (i) the glands from which the secretion of fluid occurs for nourishment of sperms.(ii) the tube which delivers the sperms formed. (iii) the tube which forms common passage for both sperms and urine. (iv) the cavity where testes are located. Name a sexually transmitted disease and a method to avoid it.

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SOLUTION :
Sexually transmitted DISEASE - AIDS
Prevention : (i) By using PHYSICAL BARRIER like condom.
(ii) Avoiding multiple sex-partners.
3563.

Question : Draw a neat diagram of human brain and label on it the following parts : (i) Mid brain (ii) Pituitary gland (iii) Cerebellum (iv) Cerebrum (a) Draw a well - labelled diagram of human brain.

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SOLUTION :LABELLED DIAGRAM of HUMAN BRAIN :
3564.

Question : Draw a neat diagram of excretory system of human beings and label the parts.

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SOLUTION :
3565.

Question : Draw a longitudinal section of a flower and label the following parts : (i) Part that develops into a fruit (ii) Part that produces pollen grain (iii) Part that transfers male gametes (iv) Part that is sticky to trap

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SOLUTION :
3566.

Question : Describe the structure of human respiratory system.

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SOLUTION :
3567.

Question : Draw a labelled longitudinal structure of a flower showing its parts.

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SOLUTION :
3568.

Question : Draw a labelled diagram of the longitudinal section of a flower.

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SOLUTION :
3569.

Question : Draw a labelled diagram of the internal structure of Human Heart.

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SOLUTION :
3570.

Question : Draw a labelled diagram of a human male reproductive system.

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SOLUTION :
3571.

Question : Draw a labelled diagram of a human female reproductive system.

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SOLUTION :
3572.

Question : Draw a labelled diagram for the Hormonal interaction in plant growth and development.

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SOLUTION :
3573.

Question : Draw a labelled diagram in proper sequence to show budding in hydra.

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SOLUTION :
3574.

Question : Draw a labelled diagram for the Pancreas

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SOLUTION :
3575.

Question : Draw a labelled diagram for the following. 1. (a) Root tip with root hairs.(b) Guard cell in turgid and Flacid condition.

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SOLUTION :
3576.

Question : Draw a labelled diagram for theAdrenal gland

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SOLUTION :
3577.

Question : Draw a germinated seed and label the future root, future shoot and structure that stores food.

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SOLUTION :(a) LEISHMANIA
(B)
3578.

Question : Draw a diagram showing schematic plan of blood circulation in human.

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Solution :SA node being SELF excitatory INITIATE a WAVE of CONTRACTION in the HEART. SA node — Sino–Atrial Node.
3579.

Question : Draw a diagram of reflex are and label the parts.

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SOLUTION :
3580.

Question : Draw a diagram of testing the conductivity of a salt solution.

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SOLUTION :
3581.

Question : Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) Ovary, (ii) Male germ-cell, (ii) Female-germ cell and (iv) ovule on it.

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SOLUTION :
Four CORRECT labelling, viz., OVARY, male GERM cell, female germ cell and ovule.
3582.

Question : Drawa diagram of excretory system in human beings label the following parts. (i) Urethra (ii) Left renal vein

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SOLUTION :Most LIKELY QUESTIONS PAPER - 7 , Q.No.18
3583.

Question : Draw a diagram of an excretory system in human beings.

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SOLUTION :
3584.

Question : Draw a neat diagram of human brain & label it.

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Solution :Refer DEPARTMENTAL MODEL Question PAPER -2, Q.No. 31.
3585.

Question : Draw a diagram of a Nephron, and explain its structure.

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Solution :Structure of the Nephron :

1. Each Nephron has basically two parts : 1. Malpighian body 2. Renal tubule
MalpighianBody :
2. It consists of BOWMAN's capsule and bunch of fine blood capillaries called glomerulus.
3. Glomerulus develops from afferent arteriole. It GIVES rise to an efferent arteriole.
Renal Tubule :
4. It three parts
1. Proximal Convoluted Tubule (PCT)
2. LOOP of HENLE
3. 'U' shaped second or Distal Convoluted Tubule (DCT)
3586.

Question : Draw a well labelled diagram of human alimenntary canal, and label the following parts :(i) Liver(ii) Pancreas(iii) Small intestine(iv) Large intestine.

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SOLUTION :
3587.

Question : Draw a block diagram showing the pathway of excretory system in human beings.

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SOLUTION :
3588.

Question : Downward flow of organic and even some inorganic solutes takes place from the leaves through the stem by way of

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phloem by protoplasmic streaming
all parenchymatous CELLS of the stem by DIFFUSION of solute downward
phloem by mass flow of solutes from higher turgor PRESSURE of leaf mesophyll cells ALONG a pressure gradient in phloem cells
phloem by diffusion 

ANSWER :C
3589.

Question : Down's syndrome is the genetic condition with 45 chromosomes.

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SOLUTION :Down.s SYNDROME is the genetic CONDITION with 21 chromosomes.
3590.

Question : Down's syndrome is due to

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NONDISJUNCTION of CHROMOSOMES
CROSSING over between genes
linkage of genes
sex LINKED inheritance

Answer :A
3591.

Question : Doubles fertilization is fusion of

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ONE egg with TWO sperms
sperm nucleus with egg nucleus as well as with POLAR nuclei
one male gamete with egg and other male gamete with synergid
one male gamete with egg with other male gamete with secondary nucleus

Answer :D
3592.

Question : Double fertilization is wonderful phenomenon in flowering plants .explain duble fertilization in flowering plant with help of a diagram.

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Solution :(1) Fertilisation is the process of fusion of make male and female gametes.
(2) For the fusion ofmale and female gametes pollen grains have to reach the surface of the stigma. This is CALLED pollination.
(3) Pollen grain received by the stigma germinate and give rise to pollen tubes. Only one pollen tube finally reaches the embryosac.
(4) This tube will have two male nuclei, which migrate to the tip of the pollen tube at the TIME of fertilization.
(5) Usally the pollen tube ENTERS the ovule through micropyle and discharge the two male gemtes into this embryosac.

(6) One male NUCLEUS (gamete) approaches the egg and fuses with it to form a diploid (2n) zygote. this is first fertilisation.
` n oversetuarr O + n underset +O rarr2n ("zygote")`
(7) The other male nucleus (gamete) reaches the secondary nucleus (2n) and fuses with it to form endosperm nucleus which will be triploid. this is second fertilization in the embryosac.
`n overset uarr O+2n underset +O rarr 3n (P.E.N)`
(8) Thus double fertilisation occurs in embryosac which is UNIQUE in flowering plants.
3593.

Question : Double fertilisation means

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FUSION of eggs and pollen NUCLEUS of two pollen nuclei
fusion of ONE male gamete with the EGG and other with the secondary nucleus
fusion of two eggs
fusion of one male gamete with the egg and other with synergids

Answer :B
3594.

Question : Double fertilisation is characteristic of

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angiosperms
algae
gymnosperms
bryophytes

Answer :A
3595.

Question : Double circulation can be seen in

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TURTLE
chimpanzee
boa
dog

ANSWER :B,d
3596.

Question : Domestic animals like cockroaches, lizards are ecologically important.

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Solution :(i) Our house is a SMALL ecosystem in which interactions between biotic and abiotic factors take place.
(ii) Wall lizard feeds on mosquitoes, spider, ETC. which help in maintaining cleanliness.
(iii) COCKROACH feedson material from drainage andhelps in cleaning the drainage passage.
(iv) EVERY COMPONENT of the ecosystem is important for the ecosystem, as they form an important link in the food chain.
3597.

Question : Does the occurrence of diversity of animals on earth suggest their diverse ancestry also? Discuss this point in the light of evolution.

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Solution :Though animals have a VAST diversity in STRUCTURES they probably do not have a COMMON ancestry, because common ancestry may greatly limit the extent of diversity. As many of these diverse animals are INHABITING the same habitat, their evolution by geographical isolation and speciation is also not likely. Thus, a common ancestry for all the animals is not the likely THEORY.
3598.

Question : Doesthe occurrence of diversity of animals on earth suggest their diverse ancenstry also? Discuss this point in the light of evolution.

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Solution :Newer organisms arise from the EXISTING ones due to natural selection of the acquired variations. Common ancestry between organisms of different species arises during speciation, in which new species are ESTABLISHED from a SINGLE ancestral population.
YET, the fundamentally different body organisations of diversified animal groups SUGGEST diverse ancestry. Thus, a common ancestry for all the animals is not acceptable..
3599.

Question : Does the chemical reaction take place when zinc is added to ferrous sulphate solution? Justify your answer.

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Solution :`ZN + FeSO_4 to ZnSO_4 + Fe`
ZINC DISPLACES iron from its SULPHATE solution as it is more REACTIVE than iron
3600.

Question : Does Spirogyrareproduce by any other of species over time ?

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ANSWER :No