Q. No.The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because:
1.
Offspring do not possess exact copies of parental DNA
2.
DNA of only one parent is copied and passed on to the offspring
3.
Offspring are formed at different times
4.
DNA of the parent and offspring are completely different.
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Asexual method of reproduction by binary fission is common to which of the following?
| 1. | Some eukaryotes |
| 2. | All eukaryotes |
| 3. | Some prokaryotes |
| 4. | All prokaryotes |
Choose the correct option from the following:
| 1. | i and ii | 2. | ii and iii |
| 3. | i and iii | 4. | iii and iv |
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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 |
| 1. | i and iv | 2. | i and ii |
| 3. | ii and iii | 4. | i and iii |
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Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because:
| 1. | Nodes are shorter than internodes |
| 2. | Nodes have meristematic cells |
| 3. | Nodes are located near the soil |
| 4. | Nodes have non-photosynthetic cells |
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Which of the following statements supports the view that elaborate sexual reproductive processes appeared much later in organic evolution?
| i. | Lower groups of organisms have a simpler body design |
| ii. | Asexual reproduction is common in lower groups |
| iii. | Asexual reproduction is common in higher groups of organisms |
| iv. | The high incidence of sexual reproduction in angiosperms and vertebrates |
| 1. | i, ii, and iii | 2. | i, iii, and iv |
| 3. | i, ii, and iv | 4. | ii, iii, and iv |
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Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because:
| 1. | Sexual reproduction is a lengthy process |
| 2. | Gametes of parents have a qualitatively different genetic composition |
| 3. | Genetic material comes from parents of two different species |
| 4. | Greater amount of DNA is involved in sexual reproduction |
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There are various types of reproduction. The type of reproduction adopted by an organism depends on:
| 1. | The habitat and morphology of the organism |
| 2. | Morphology of the organism |
| 3. | Morphology and physiology of the organism |
| 4. | The organism’s habitat, physiology, and genetic makeup |
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Identify the incorrect statement :
| 1. | In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent |
| 2. | Zoospores are sexual reproductive structures |
| 3. | In asexual reproduction, a single parent produces offspring with or without the formation of gametes |
| 4. | Conidia are asexual structures in Penicillium |
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Match the asexual reproductive structure in COLUMN I with organisms in COLUMN II and select the correct option from the codes given:
|
|
COLUMN I |
|
COLUMN II |
|
A. |
Zoospore |
a. |
Penicillium |
|
B. |
Conidia |
b. |
Chlamydomonas |
|
C. |
Buds |
c. |
Sponge |
|
D. |
Gemmule |
d. |
Hydra |
| Options: | (A) | (B) | (C) | (D) |
| 1. | a | b | c | d |
| 2. | d | c | b | a |
| 3. | c | d | a | b |
| 4. | b | a | d | c |
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Match vegetative propagules in COLUMN I with plants in COLUMN II and select the correct option from the codes given:
|
|
COLUMN I |
|
COLUMN II |
|
A. |
Rhizome |
a. |
Bryophyllum |
|
B. |
Bulbil |
b. |
Eichhornia |
|
C. |
Leaf buds |
c. |
Ginger |
|
D. |
Offset |
d. |
Agave |
| Options: | (A) | (B) | (C) | (D) |
| 1. | a | b | c | d |
| 2. | d | c | b | a |
| 3. | c | d | a | b |
| 4. | b | a | d | c |
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