Small aquatic animals produce large number of gametes in surrounding water

A. to enhance the chances of syngamy

B. to produce large number of offspring

C. offspring are extremely vulnerable to predators threatening their survival

D. Both A and C

Subtopic:  Events during Sexual reproduction |
From NCERT
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Every sexually reproducing organism, including human beings begin life as a _________ called zygote.

A. Single cell

B. Double cell one from each parent

C.Blastopore

D. Megaspore

Subtopic:  Sexual Reproduction |
 82%
From NCERT
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Strobilanthus kunthiana (neelakuranji), flowers once in _______ years.

A. 10

B. 20

C. 12

D. 16

 

Subtopic:  Sexual Reproduction |
 92%
From NCERT
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Vegetative phase in plants is same as ___________ in animal.

A. Sexual phase

B. Juvenile phase

C. Reproductive phase

D. Syngamy phase

Subtopic:  Sexual Reproduction |
 85%
From NCERT
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Which is not a method of vegetative propagation

A.Micro propagation

B.Budding

C.Sowing

D.Layering

Subtopic:  Asexual Reproduction |
 62%
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Isogamy is found in

A.Plasmodium

B.Hydra

C. Monocystis

D.Planaria

Subtopic:  Asexual Reproduction |
 52%
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Asexually produced organism inheriting all the character of parent is

A.Offspring

B.Clone

C.Variety

D.Hybrid

Subtopic:  Asexual Reproduction |
 92%
From NCERT
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In vegetative propagation by tuber, which of the following remains constant through generations

A.Morphology

B.Vigour

C.Morphology, vigour and disease resistance

D.Both morphology and Vigour

Subtopic:  Asexual Reproduction |
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Binary fission is a type of

A.Nuclear fragmentation

B.Vegetative propagation

C.Sexual reproduction

D.Asexual reproduction

Subtopic:  Asexual Reproduction |
 86%
From NCERT
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Natural parthenogenesis occur in

A.Housefly

B.Drosophila

C.Honey bee

D.All

Subtopic:  Sexual Reproduction | Events during Sexual reproduction |
 64%
From NCERT
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