How do Organisms Reproduce?
Exemplar Problem and Solution
MCQs 3
Question: 19. In the given figure, the parts A, B and C are sequentially 
(a) Cotyledon, plumule and radicle
(b) Plumule, radicle and cotyledon
(c) Plumule, cotyledon and radicle
(d) Radicle, cotyledon and plumule
Answer: (d) Radicle, cotyledon and plumule
Question: 20. Offspring formed as a result of sexual reproduction exhibit more variations because
(a) Sexual reproduction is a lengthy process
(b) Genetic material comes from two parents of the same species
(c) Genetic material comes from two parents of different species
(d) 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
(a) Keep the individual organism alive
(b) Fulfill their energy requirement
(c) Maintain growth
(d) 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
(a) Loss of milk teeth
(b) Increase in height
(c) Cracking of voice
(d) Weight gain
Answer: (c) Cracking of voice
Question: 23. In human females, an event that reflects onset of reproductive phase is
(a) Growth of body
(b) Changes in hair pattern
(c) Change in voice
(d) Menstruation
Answer: (d) Menstruation
Question: 24. In human males, the testes lie in the scrotum, because it helps in the
(a) Process of mating
(b) Formation of sperm
(c) Easy transfer of gametes
(d) 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
(a) (1) and (2)
(b) (2) and (3)
(c) (3) and (4)
(d) (1) and (4)
Answer: (c) (3) and (4)
Question: 26. The correct sequence of organs in the male reproductive system for transport of sperms is
(a) Testis → vas deferens → urethra
(b) Testis → ureter → urethra
(c) Testis → urethra → ureter
(d) Testis → vas deferens → ureter
Answer: (a) Testis → vas deferens → urethra
Question: 27. Which among the following diseases is not sexually transmitted?
(a) Syphillis
(b) Hepatitis
(c) HIV – AIDS
(d) Gonorrhoea
Answer: (b) Hepatitis
