CBSE Class 10 Biology How do Organisms Reproduce MCQs Set H

Question. 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 of the above. 
Answer: b

Question. Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) Pollination, fertilisation, seedling, embryo
(b) Seedling, embryo, fertilisation, pollination
(c) Pollination, fertilisation, embryo, seedling
(d) Embryo, seedling, pollination, fertilisation
Answer: c

Question. 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

Question. 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

Question. Which of the following are examples of vegetative reproduction in plants?
(a) Tomato, lady’s finger, onion and cauliflower
(b) Potato, ginger, onion and sugarcane
(c) Cauliflower, onion, potato and tomato
(d) Lady’s finger, onion, ginger and sugarcane
Answer: b

Question. A feature of reproduction that is common to Amoeba, Spirogyra and Yeast are that
(a) they reproduce asexually.
(b) they are all unicellular.
(c) they reproduce only sexually.
(d) they are all multicellular. 
Answer: a

Question. Asexual reproduction takes place through budding in
(a) Amoeba
(b) Yeast
(c) Plasmodium
(d) Leishmania 
Answer: b

Question. 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

Question. The number of chromosomes in parents and offsprings of a particular species remains constant due to
(a) doubling of chromosomes after zygote formation
(b) halving of chromosomes during gamete formation
(c) doubling of chromosomes after gamete formation
(d) halving of chromosomes after gamete formation 
Answer: b

Question. Vegetative propagation 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

Question. 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

Question. The correct sequence of reproductive stages seen in flowering plants is
(a) gametes, zygote, embryo, seedling
(b) zygote, gametes, embryo, seedling
(c) seedling, embryo, zygote, gametes
(d) gametes, embryo, zygote, seedling 
Answer: a

Question. 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

Question. Which among the following diseases is not sexually transmitted?
(a) Syphilis
(b) Hepatitis
(c) HIV – AIDS
(d) Gonorrhoea 
Answer: b

Question. A student while observing an embryo of a gram seed listed various parts of the embryo as listed below: Testa, Micropyle, Cotyledon, Tegmen, Plumule, Radicle.
On examining the list the teacher commented that only three parts are correct. Select these three correct parts:
(a) Cotyledon, Testa, Plumule
(b) Cotyledon, Plumule, Radicle
(c) Cotyledon, Tegmen, Radicle
(d) Cotyledon, Micropyle, Plumule 
Answer: b

Question. Characters 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 variations
Answer: c

Question. In Spirogyra, asexual reproduction takes place by
(a) breaking up of filaments into smaller bits.
(b) division of a cell into two cells.
(c) division of a cell into many cells.
(d) formation of young cells from older cells. 
Answer: a

Question. Which of the following is not a part of the female reproductive system in human beings?
(a) Ovary
(b) Uterus
(c) Vas deferens
(d) Fallopian tube
Answer: c

Question. 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

Question. Length of pollen tube depends on the distance between
(a) pollen grain and upper surface of stigma
(b) pollen grain on upper surface of stigma and ovule
(c) pollen grain in anther and upper surface of stigma
(d) upper surface of stigma and lower part of style 
Answer: b

Question. In the list of organisms given below, those that reproduce by the asexual method are
(i) Banana (ii) Dog
(iii) Yeast (iv) Amoeba
(a) (ii) and (iv)
(b) (i), (iii) and (iv)
(c) (i) and (iv)
(d) (ii), (iii) and (iv) 
Answer: b

Question. Offspring formed by asexual method of reproduction have greater similarity among themselves because
(i) asexual reproduction involves only one parent.
(ii) asexual reproduction does not involve gametes.
(iii) asexual reproduction occurs before sexual reproduction.
(iv) asexual reproduction occurs after sexual reproduction.
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)
Answer: a

Question. 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) (i) and (ii)
(d) (iii) and (iv) 
Answer: c

Question. 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

Question. 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 fertilisation they give rise to fruits.
(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)
Answer: d

Assertion and Reason Based MCQs :

Directions : In the following questions, A statement of Assertion (a) is followed by a statement of Reason (R).
(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 and R is true.

Question. Assertion (A): Characteristics of parental plants can be preserved through asexual reproduction.
Reason (R): Vegetative reproduction involves only mitosis.
Answer: a

Question. Assertion (A): Surgical methods are most effective methods of contraception.
Reason (R): Surgical method blocks gametes transport and hence prevent fertilisation.
Answer: a

Question. Assertion: Fertilization results in formation of zygote.
Reason: Zygote divides several times to form an embryo.
Answer: b

Question. Assertion (A): Plasmodium reproduces by multiple fission.
Reason (R): Multiple fission is a type of asexual reproduction.
Answer: b

Question. Assertion (a): At puberty, in boys, voice begins to crack and thick hair grows on face.
Reason (R): At puberty, there is decreased secretion of testosterone in boys.
Answer: c

Question. Assertion (A): Amoeba reproduces by binary fission.
Reason (R): All unicellular organisms reproduce asexually.
Answer: a

Question. Assertion (A): Plants are vegetatively propagated even though they bear or not bear seeds.
Reason (R): Potatoes reproduces through tubers, apples by cutting etc.
Answer: b

Question. Assertion (A): Sexual reproduction increases genetic diversities and plays a role in origin of new species.
Reason (R): Sexual reproduction involves formation of gametes and fusion of gametes.
Answer: a

Question. Assertion (A): DNA copying is necessary during reproduction.
Reason (R): DNA copying leads to the transmission of characters from parents to offspring.
Answer: a

Question. Assertion (A): Double fertilisation is unique to angiosperms.
Reason (R): Triple fusion occurs in asexual reproduction.
Answer: c

Question. Assertion (A): In human male, testes are extraabdominal organs which are present inside scrotum.
Reason (R): Scrotum has a relatively lower temperature needed for the production and storage of sperms.
Answer: c

Question. Assertion (A): An embryo is formed from fertilized egg.
Reason (R): A monocot embryo comprises embryonal axis with two cotyledons.
Answer: c

Question. Assertion (A): Unisexual flowers have separate male and female flowers whereas a typical monocot embryo comprises an embryonal axis with single cotyledon.
Reason (R): Cucumber, pumpkin and water melon are example of unisexual flowers.
Answer: b