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Q. No.Given below are two statements:
Assertion (A):
Reproduction enables the continuity of species generation after generation.
Reason (R):
Organism's habitat, its internal physiology and several other factors are responsible for how it reproduces.
1.
Both (A) and (R) are true and (R) is the correct explanation of (A).
2.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.
(A) is true but (R) is false.
4.
Both (A) and (R) are false.
Subtopic: Introduction |
76%
From NCERT
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Amongst the following animals, the least life span is of
1. Crocodile
2. Crow
3. Tortoise
4. Parrot
1. Crocodile
2. Crow
3. Tortoise
4. Parrot
Subtopic: Introduction |
87%
From NCERT
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Sexual reproduction is different from asexual reproduction as the former
1. Involves gamete formation
2. Never include single parent
3. Involves fusion of gametes
4. Produce genetically identical offsprings
1. Involves gamete formation
2. Never include single parent
3. Involves fusion of gametes
4. Produce genetically identical offsprings
Subtopic: Introduction |
68%
From NCERT
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In which plant, adventitious buds arises from the notches present at margins of leaves and help in vegetative propagation?
1. Banana
2. Bryophyllum
3. Water hyacinth
4. Sugarcane
1. Banana
2. Bryophyllum
3. Water hyacinth
4. Sugarcane
Subtopic: Asexual Reproduction |
91%
From NCERT
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The term clone is used to describe the individuals which are
| 1. | Produced by budding and are morphologically different |
| 2. | Morphologically and genetically similar |
| 3. | the offsprings and genetically similar |
| 4. | Morphologically similar but genetically can be different |
Subtopic: Asexual Reproduction |
91%
From NCERT
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How many chromosomes are present in the gamete of fruit fly?
1. Eight
2. Fourteen
3. Twenty
4. Four
1. Eight
2. Fourteen
3. Twenty
4. Four
Subtopic: Sexual Reproduction | Events during Sexual reproduction |
From NCERT
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The organisms in which cell division are itself a mode of reproduction are
1. Monerans or protists
2. Plants only
3. Animals
4. All kinds of algae
1. Monerans or protists
2. Plants only
3. Animals
4. All kinds of algae
Subtopic: Asexual Reproduction |
80%
From NCERT
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Which among the following is pre-fertilisation event in sexual reproduction of an organism?
1. Formation of zygote
2. Embryogenesis
3. Pollination
4. Syngamy
1. Formation of zygote
2. Embryogenesis
3. Pollination
4. Syngamy
Subtopic: Sexual Reproduction | Events during Sexual reproduction |
61%
From NCERT
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Amoeba and Paramoecium can asexually reproduce by
1. Conidia formation
2. Bud formation
3. Zoospores
4. Binary fission
1. Conidia formation
2. Bud formation
3. Zoospores
4. Binary fission
Subtopic: Asexual Reproduction |
85%
From NCERT
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Select the odd one out w.r.t asexual reproduction.
| 1. | Gamete formation can occur |
| 2. | Involvement of only one parent |
| 3. | Gametic fusion is absent |
| 4. | Morphologically and genetically different individuals are produced |
Subtopic: Asexual Reproduction |
72%
From NCERT
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