NCERT MCQ CLASS-12 CHAPTER-1 | BIOLOGY NCERT MCQ | REPRODUCTION IN ORGANISM | EDUGROWN

In This Post we are  providing Chapter-1 Reproduction in Organism  NCERT MCQ for Class 12 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON REPRODUCTION IN ORGANISM

Question 1: Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because

• a) gametes of parents have qualitatively different genetic composition
• b) gametes of parents have qualitatively different genetic composition
• c) greater amount of DNA is involved in sexual reproduction
• d) sexual reproduction is a lengthy process

Answer: gametes of parents have qualitatively different genetic composition

Question 2: The property of an undifferentiated cell that has the potential to develop into an entire plant is called

• a) Totipotency
• b) Sub potency
• c) Cloning
• d) Budding

Answer: Totipotency

Question 3: The development of root and shoot in tissue culture is determined by ______

• a) Auxin and cytokinin ratio
• b) None of the above
• c) Nutrients
• d) Temperature

Answer: Auxin and cytokinin ratio

Question 4: There is no natural death in single celled organisms like Amoeba and bacteria because

• a) parental body is distributed among the offspring
• b) they are microscopic
• c) they reproduce by binary fission
• d) they cannot reproduce sexually

Answer: parental body is distributed among the offspring

Question 5: There are various types of reproduction. The type of reproduction adopted by an organism depends on

• a) the organism’s habitat, physiology, and genetic makeup
• b) morphology and physiology of the organism
• c) morphology of the organism
• d) None of these

Answer: the organism’s habitat, physiology, and genetic makeup

Question 6: A few statements describing certain features of reproduction are given below:

i. Gametic fusion takes place

ii. Transfer of genetic material takes place

iii. Reduction division takes place

iv. Progeny have some resemblance with parents

Select the options that are true for both asexual and sexual reproduction from the options given below:

• a) ii and iv
• b) i and iii
• c) ii and iii
• d) i and ii

Answer: ii and iv

Question 7: Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because

• a) nodes have meristematic cells
• b) nodes have meristematic cells
• c) nodes have meristematic cells
• d) nodes are shorter than intenodes

Answer: nodes have meristematic cells

Question 8: Identify the correct sequence of events

• a) Gametogenesis → Syngamy → Zygote
• b) Gametogenesis → Embryogenesis → Zygote → Syngamy
• c) Gametogenesis → Zygote → Syngamy → Embryogenesis
• d) Gametogenesis → Syngamy Embryogenesis → Zygote

Answer: Gametogenesis → Syngamy → Zygote

Question 9: The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because

• a) Offspring do not possess exact copies of parental DNA
• b) DNA of only one parent is copied and passed on to the offspring
• c) Offspring are formed at different times
• d) NA of parent and offspring are completely different

Answer: Offspring do not possess exact copies of parental DNA

Question 10: Amoeba and Yeast reproduce asexually by fission and budding respectively, because they are

• a) Unicellular organisms
• b) Uninucleate organisms
• c) Heterotrophic organisms
• d) Microscopic organisms

Answer: Unicellular organisms

Question 11: A few statements with regard to sexual reproduction are given below:

i. Sexual reproduction does not always require two individuals

ii. Sexual reproduction generally involves gametic fusion

iii. Meiosis never occurs during sexual reproduction

iv. External fertilisation is a rule during sexual reproduction

Choose the correct statements from the options below:

• a) i and ii
• b) ii and iii
• c) i and iv
• d) i and iv

Answer: i and ii

Question 12: A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has

• a) haploid vegetative cells and haploid gametangia
• b) diploid vegetative cells and haploid gametangia
• c) diploid vegetative cells and diploid gametangia
• d) haploid vegetative cells and diploid gametangia

Answer: haploid vegetative cells and haploid gametangia

Question 13: The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively,

• a) 12, 24, 24
• b) 24, 12, 24
• c) 24, 12, 12
• d) 12, 24, 12

Answer: 12, 24, 24

Question 14: Given below are a few statements related to external fertilization. Choose the correct statements.

i. The male and female gametes are formed and released simultaneously

ii. Only a few gametes are released into the medium

iii. Water is the medium in a majority of organisms exhibiting external fertilization

iv. Offspring formed as a result of external fertilization have better chance of survival than those formed inside an organism

• a) i and iii
• b) ii and iv
• c) i and iv
• d) iii and iv

Answer: i and iii

Question 15 : The statements given below describe certain features that are observed in the pistil of flowers.

i. Pistil may have many carpels

ii. Each carpel may have more than one ovule

iii. Each carpel has only one ovule

iv. Pistil have only one carpel

Choose the statements that are true from the options below:

• a) i and ii
• b) i and iii
• c) ii and iv
• d) iii and iv

Answer: i and ii