Reproduction
NCERT Exemplar Solutions: MCQs
Question:1: In the list of organisms given below, those that reproduce by the asexual method are
1. Banana
2. Dog
3. Yeast
4. Amoeba
(a) 2 and 4
(b)1, 3 and 4
( c) 1 and 4
(d)2, 3 and 4
Answer: (b) 1, 3 and 4
Question:2: In a flower, the parts that produce male and female gametes (germ cells) are
(a)Stamen and anther
(b) Filament and stigma
(c) anther and ovary
(d)Stamen and style
Answer: (c) anther and ovary
Question:3: Which of, the following is the correct sequence of events of sexual reproduction in a flower?
(a)Pollination, fertilization, seedling, embryo
(b) seedling, embryo, fertilization, pollination
( c) Pollination, fertilization, embryo, seedling
(d)Embryo, seedling, pollination, fertilization
Answer: (c ) Pollination, fertilization, embryo, seedling
Question:4: Offspring formed by asexual method of reproduction have greater similarity among themselves because
(a) Asexual reproduction involves only one parents
(b) Asexual reproduction does not involve gametes
(c) Asexual reproduction occurs before sexual reproduction
(d) Asexual reproduction occurs after sexual reproduction
(a)1 and 2
(b)1 and 3
(c )2 and 4
(d)3 and 4
Answer:(a) 1 and 2
Question:5:Characters transmitted from parents to offspring are present
(a) Cytoplasm
(b)ribosome
( c)golgi bodies
(d)genes
Answer: (d) genes
Question:6; Chracters that are transmitted from parents to offspring during reproduction show
(a)Only similarities with parents
(b) only variations with parents
(c )Both similarities and variations with parents
(d)neither similarities nor variation with parents
Answer : (c)Both similarities and variation with parents.
Question:7. A feature of reproduction that is common to Amoeba, spirogyra and yeast is that
(a)they reproduce asexually
(b)they are all unicellular
(c)they reproduce only sexually
(d) they are all multicellular
Answer: (a)they reproduce asexually
Question:8. In Spirogyra, asexual reproduction takes place by
(a) breaking up of filaments into smaller bits
(b)division of cell into two cells
(c )Division of a cell into many cells
(d)Formation of young cells from older cells
Answer:(a)breaking up of filaments into smaller bits.
Question:9: The ability of a cell to divide into several cells during reproduction in plasmodium is called
(a)budding
(b)reduction division
( c)binary fission
(d)Multiple fission
Answer:(d)multiple fission
Question:10: The correct sequence of reproductive stages seen in the flowing plant is
(a)gametes, Zygote, embryo, seeding
(b)zygote, gametes, embryo, seeding
(c ) seedling, embryo, zygote, gametes
(d)gametes, embryo, zygote, seedling
Answer: (a)gametes, Zygote, embryo, seeding
Question:11:The number of chromosomes in parents and offsprings of a particular species remains constant due to
(a) doubling of chromosomes after zygote formation
(b)having of chromosomes during gamete formation
( c)doubling of chromosomes after gamete formation
(d)having of chromosomes after gamete formation
Answer:(b)having of chromosomes during gamete formation
Question: 12. In Rhizopus tabular thread like structures bearing aporangia at their tips are called
(a) filaments
(b) hyphae
(c) rhizoids
(d) roots
Answer: (b) hyphae
Question: 13. Vegetative propagating refers to formation of new plants from
(a) stem, roots and flowers
(b) stem, roots and leaves
(c) stem, flowers and fruits
(d) stem, leaves and flowers
Answer: (b) stem, roots and leaves
Question: 14. Factors responsible for the rapid spread of bread mould on slices of bread are
I. large number of spores
II. availability of moisture and nutrients in bread
III. presence of tubular branched hyphae
IV. formation of round shaped sporangia
(a) I and III
(b) II and IV
(c) 1 and II
(d) III and IV
Answer: (c) 1 and II
Question: 15. Length of pollen tube depends on the distance between
(a) pollen grain an upper surface of stigma
(b) pollen grain and upper surface of stgma and ovule
(c) pollen grain in anther and upper surface of sigma
(d) upper surface of stigma and lower part of style
Answer: (b) pollen grain and upper surface of stgma and ovule
Question:16. Which of the following statements are true for flowers?
I. Flowers are always bisexual
II. They are the sexual reproductive organs
III. They are produced in all groups of plants
IV. After fertilization they give rise to fruits
(a) I and IV
(b) II and III
(c) I and III
(d) II and IV
Answer: (d) II and IV
Question:17. Which among the following statements are true for unisexual flowers?
I. They possess both stamen and pistil
II. They possess either stamen or pistil
III. They exhibit cross pollination
IV. Unisexual flowers possessing only stamens cannot produce fruits.
(a) I and IV
(b) II, III and IV
(c) III and IV
(d) I, III, and IV
Answer: (b) II, III and IV
Question:18. Which among the following statements are true for sexual reproduction in flowering plants?
I. It requires two types of gamets
II. Fertilization is a compulsory event
III. It always results in formation of zygote
IV. Offspring formed are clones.
(a) I and IV
(b) I, II and IV
(c) I, II and III
(d) I, III and IV
Answer: (c) I, II and III
Question:19. In the given figure the parts A, B and C are sequentially
(a) Cotyledon, plumule and radicle
(b) plumule, radical and cotyledon
(c) plumule, cotyledon and radical
(d) radical, cotyledon and plumule
Answer: (c) plumule, cotyledon and radical
Question:20. Offspring formed as a result of sexual reproduction exibit 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 in voice
(d) weight gain
Answer: (c) cracking in 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) mensuration
Answer: (d) mensuration
Question:24. In human male, the testes lie in 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
I. formation of germ cells
II. secretion of testosterone
III. development of placenta
IV. secretion of estrogen
(a) I and II
(b) II and III
(c) III and IV
(d) I and IV
Answer: (c) III and IV
Question: 26. The correct sequence of organs in male reproductive system for transport of sperms is
(a) testis → vasdeferens → urethra
(b) testis → ureter → urethra
(c) testis → urethra → ureter
(d) testis → vasdeferens → ureter
Answer: (a) testis → vasdeferens → urethra
Question: 27. Which among the following diseases is not sexually transmitted?
(a) Syphillis
(b) Hepatitis
(c) HIV – AIDS
(d) Gonorrhoea
Answer: (b) Hepatitis
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