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NCERT - Reproduction in Organisms Questions and Answers of Class 12 Biology | GkSeries

Questions
46 A simple multicellular animal having tantacles and lives in fresh water reproduces by asexual method of...
1 binary fission
2 spore formation
3 budding
4 fragmentation

Answer: budding
47 An alga which reproduces by asexual method called fragmentation is...
1 rhizopus
2 salmonella
3 plasmodium
4 spirogyra

Answer: spirogyra
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48 Cutting is used to grow a new plant of...
1 lemon
2 mango
3 rose
4 potato

Answer: rose
49 In humans, the embryo gets nutrition from mother's blood through...
1 ovary
2 oviduct
3 amnion
4 placenta

Answer: placenta
50 Which of the following reproduces by multiple fission?
1 Hydra
2 Yeast
3 Plasmodium
4 Spirogyra

Answer: Plasmodium
51 The process of release of an egg from the ovary is called.
1 reproduction
2 menstruation
3 fertilization
4 ovulation

Answer: ovulation
52 The sexual cycle in human female remains active (functional), generally up to the age of...
1 30 years
2 40 years
3 50 years
4 60 years

Answer: 50 years
53 By which process is the continuity of life of various species maintained?
1 Digestion
2 Respiration
3 Contraception
4 Reproduction

Answer: Reproduction
54 In which organisms does reproduction take place through binary fission?
1 Hydra, Planaria
2 Hydra, Amoeba
3 Amoeba, Paramoecium
4 Mucor, Yeast

Answer: Amoeba, Paramoecium
55 Which of the following are asexual modes of reproduction in multicellular organisms?
1 Regeneration, Budding
2 Binary fission, Regeneration
3 Regeneration, Fission
4 Multiple fission, Budding

Answer: Regeneration, Budding
56 The growing embryo (foetus) obtains nutrition from mother's body from...
1 amnion
2 amniotic fluid
3 heart
4 Placenta

Answer: Placenta
57 Sexual Reproduction can be grouped into -----distinct stages.
1 two
2 five
3 three
4 four

Answer: three
58 Eithr male or female reproductive organs are found in the body
1 Monoecious
2 Dioecious
3 Meiocyte
4 Syngamy

Answer: Dioecious
59 Hydra reproduces asexually by
1 binary fission
2 budding
3 Vegetative propagation
4 Multiple fssion

Answer: budding
60 Gametes are usually
1 Haploid
2 Diploid
3 Both a and b
4 None of the above.

Answer: Haploid
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