Q. No.Match each item in Column I with one item in Column II and chose your answer from the codes given below.
Column I
(plant)
Column II
(vegetatively propagated by)
I.
Pistia
1.
Stem
II.
Asparagus
2.
Root
III.
Kalanchoe
3.
Leaves
Codes:
Options:
I
II
III
1.
1
2
3
2.
2
1
3
3.
2
3
1
4.
1
3
2
Column I
(plant)
Column II
(vegetatively propagated by)
Codes:
Consider the following statements :
| 1. | The period from birth to the natural death of an organism represents its lifespan. |
| 2. | The lifespans of organisms are strictly correlated to their body size. |
| 3. | No individual is immortal, except single-celled organisms. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I,II, and III |
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Identify the correctly matched pair:
|
1. |
Asexual reproductive structure in Chlamydomonas |
Zygospores |
|
2. |
Vegetative propagule in Agave |
Offset |
|
3. |
Chromosome number in meiocyte of Ophioglossum |
630 |
|
4. |
Marchantia |
Dioecious plant |
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What is true about the given figure?
| 1. | The plant concerned is Chara, A is Oogonium and B is Antheridium |
| 2. | The plant concerned is Chara, B is Oogonium and A is Antheridium |
| 3. | The plant concerned is Marchantia, A is Oogonium and B is Antheridium |
| 4. | The plant concerned is Marchantia, B is Oogonium and A is Antheridium |
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A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of a zygote. The adult filament of this alga has:
1. haploid vegetative cells and diploid gametangia
2. diploid vegetative cells and diploid gametangia
3. diploid vegetative cells and haploid gametangia
4. haploid vegetative cells and haploid gametangia
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The male gametes of a 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:
| 1. | 12, 24, 12 | 2. | 24, 12, 12 |
| 3. | 12, 24, 24 | 4. | 24, 12, 24 |
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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 a better chance of survival than those formed inside an organism. |
| 1. | iii and iv | 2. | i and iii |
| 3. | ii and iv | 4. | i and iv |
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The statements given below describe certain features that are observed in the pistil of flowers.
i. Pistil may produce more than one seed.
ii. Each carpel may have more than one ovule.
iii. Each carpel has only one ovule.
iv. Pistil has only one carpel.
Choose the statements that are true from the options below:
| 1. | i and ii | 2. | i and iii |
| 3. | ii and iv | 4. | iii and iv |
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Which of the following situations correctly describes the similarity between an angiosperm egg and a human egg?
| 1. | Eggs of both are formed only once in a lifetime |
| 2. | Both the angiosperm egg and human egg are stationary |
| 3. | Both the angiosperm egg and human egg are mobile |
| 4. | Syngamy in both results in the formation of zygote |
Choose the correct answer from the options given below:
| 1. | ii and iv | 2. | iv only |
| 3. | iii and iv | 4. | i and iv |
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Choose the correct statement from the following:
| 1. | Dioecious (hermaphrodite) organisms are seen only in animals. |
| 2. | Dioecious organisms are seen only in plants. |
| 3. | Dioecious organisms are seen in both plants and animals. |
| 4. | Dioecious organisms are seen only in vertebrates. |
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