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How Do Organisms Reproduce Class 10 Assertion Reason Questions
The following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Q.1. Assertion(A): Testes lie in penis outside the body.
Reason (R) : Sperms require temperature lower than the body temperature for development
(d) A is false but R is true.
Q.2. Assertion(A) : Spores are unicellular bodies.
Reason (R) : The parent body simply breaks up into smaller pieces on maturation.
(c) A is true but R is false.
Q.3. Assertion(A) : Asexual reproduction is a primitive type of reproduction.
Reason (R) : Asexual reproduction involves only mitotic cell division.
(a) Both A and R are true and R is the correct explanation of A.
Q.4. Assertion(A) : Growth hormone stimulates the growth of different body parts.
Reason (R) : Gonadotropins stimulate the production of sex hormones.
(b) Both A and R are true but R is not the correct explanation of A.
Q.5. Assertion(A): Pollen grains from the carpel stick to the stigma of stamen.
Reason (R) : The fertilised egg cells grow inside the ovules and become seeds.
(d) Assertion is false but reason is true
Q.6. Assertion(A) : The offspring produced by sexual reproduction is likely to adjust better in environmental fluctuation.
Reason (R) : During the fusion of gametes there is mixing of genetic material from two parents.
(a) Both A and R are true and R is the correct explanation of A.
Q.7. Assertion(A) : Colonies of yeast multiply in sugar solution.
Reason (R) : Sugar is made of sucrose which provides energy for sustaining all life activities.
(a) Both A and R are true and R is the correct explanation of A.
Q.8. Assertion(A) : Clones are offspring of an organism formed by asexual reproduction.
Reason (R) : Clones have exact copies of DNA as their parent.
(b) Both A and R are true but R is not the correct explanation of A.
Q.9.Assertion(A): The child sex ratio is declining at an larming rate in some sections of our society.
Reason(R): Female foeticides are carried out recklessly.
(a) Both A and R are true and R is the correct explanation of A.
Q.10.Assertion (A): In females the egg is carried from the ovary to the womb through a thin oviduct or fallopian tube.
Reason (R): The uterus opens into the vagina through the cervix.
(b) Both A and R are true but R is not the correct explanation of A.
Assertion (A): Reproduction is a characteristic feature of living organisms.
Reason (R): Reproduction is the process by which living organisms produce offspring of their own kind.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Sexual reproduction results in greater genetic variation among offspring.
Reason (R): Sexual reproduction involves the fusion of gametes from two different parents, leading to genetic recombination.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Binary fission is a mode of asexual reproduction.
Reason (R): In binary fission, a single organism divides into two genetically identical daughter cells.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Spore formation is a form of sexual reproduction.
Reason (R): Spores are produced by the fusion of gametes from two different individuals.
Answer: (c) A is true but R is false.
Assertion (A): Budding is a method of asexual reproduction.
Reason (R): Budding involves the formation of a small outgrowth that detaches from the parent organism and develops into a new individual.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Regeneration is a form of asexual reproduction.
Reason (R): Regeneration is the ability of an organism to regrow lost or damaged body parts.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Pollination is essential for fertilization in flowering plants.
Reason (R): Pollination is the transfer of pollen grains from the anther to the stigma of a flower.
Answer: (b) Both A and R are true but R is not the correct explanation of A.
Assertion (A): Fertilization in humans occurs in the uterus.
Reason (R): The uterus provides a suitable environment for the development of the fertilized egg.
Answer: (d) A is false but R is true.
Assertion (A): Fragmentation is a method of asexual reproduction in fungi.
Reason (R): Fragmentation involves the breaking of the mycelium into smaller fragments, each of which can develop into a new individual.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Offspring produced by asexual reproduction are genetically identical to the parent.
Reason (R): Asexual reproduction does not involve the fusion of gametes or genetic recombination.
(a) Both A and R are true and R is the correct explanation of A.
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