Class 10 Science

How Do Organisms Reproduce

NCERT Exemplar Problems

MCQ Part 3

Question 19: In the given figure, the parts A, B and C are sequentially

10 science reproduction exemplar question
  1. Cotyledon, plumule and radicle
  2. Plumule, radicle and cotyledon
  3. Plumule, cotyledon and radicle
  4. Radicle, cotyledon and plumule

    Answer: (d) Radicle, cotyledon and plumule

Question 20: Offspring formed as a result of sexual reproduction exhibit more variations because

  1. Sexual reproduction is a lengthy process
  2. Genetic material comes from two parents of the same species
  3. Genetic material comes from two parents of different species
  4. Genetic material comes from many parents

    Answer: (b) Genetic material comes from two parents of the same species

Question 21: Reproduction is essential for living organisms in order to

  1. Keep the individual organism alive
  2. Fulfill their energy requirement
  3. Maintain growth
  4. Continue the species generation after generation

    Answer: (d) Continue the species generation after generation

Question 22: During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys

  1. Loss of milk teeth
  2. Increase in height
  3. Cracking of voice
  4. Weight gain

    Answer: (c) Cracking of voice

Question 23: In human females, an event that reflects onset of reproductive phase is

  1. Growth of body
  2. Changes in hair pattern
  3. Change in voice
  4. Menstruation

    Answer: (d) Menstruation

Question 24: In human males, the testes lie in the scrotum, because it helps in the

  1. Process of mating
  2. Formation of sperm
  3. Easy transfer of gametes
  4. All the above

    Answer: (b) Formation of sperm

Question 25: Which among the following is not the function of testes at puberty?

  1. Formation of germ cells
  2. Secretion of testosterone
  3. Development of placenta
  4. Secretion of estrogen
  1. (i) and (ii)
  2. (ii) and (iii)
  3. (iii) and (iv)
  4. (i) and (iv)

    Answer: (c) (iii) and (iv)

Question 26: The correct sequence of organs in the male reproductive system for transport of sperms is

  1. Testis → vas deferens → urethra
  2. Testis → ureter → urethra
  3. Testis → urethra → ureter
  4. Testis → vas deferens → ureter

    Answer: (a) Testis → vas deferens → urethra

Question 27: Which among the following diseases is not sexually transmitted?

  1. Syphillis
  2. Hepatitis
  3. HIV – AIDS
  4. Gonorrhoea

    Answer: (b) Hepatitis