Q. No.Which of the following is not always true for sexual mode of reproduction?
I. Separate sexes in the species
II. Gamete formation
III. Fertilization
1.
Only I
2.
Only III
3.
Both I and III
4.
Both II and III
I. Separate sexes in the species
II. Gamete formation
III. Fertilization
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1. come to the flower
2. start producing seeds
3. start producing lateral branches
4. undergo secondary growth
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Identify the correct statements:
| I. | Clear-cut vegetative, juvenile, and senescent phases are seen only in perennial plants. |
| II. | Neelakurinji flowers once in 12 years. |
| III. | Bamboo flowers only once in their lifetime. |
| 1. | Only III |
| 2. | Only II and III |
| 3. | Only I and II |
| 4. | I, II, and III |
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Birds in captivity (as in poultry farms) :
| 1. | lay eggs seasonally |
| 2. | can be made to lay eggs throughout the year |
| 3. | exhibit estrous cycles |
| 4. | exhibit menstrual cycles |
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Menstrual cycles occur in:
1. all animal females
2. all female mammals
3. female monkeys, apes, and humans
4. only in human females
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Which of the following is the most critical event of sexual reproduction?
| 1. | Gametogenesis | 2. | Gamete Transfer |
| 3. | Fertilization | 4. | Embryogenesis |
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A plant with both male flowers and female flowers is called as:
| 1. | Unisexual | 2. | Bisexual |
| 3. | Dioecious | 4. | Monoecious |
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A flower that produces only pollens is called as:
| 1. | Perfect flower | 2. | Staminode |
| 3. | Dioecious | 4. | Staminate |
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Identify the incorrectly matched pair:
1. Cockroach - Unisexual animal
2. Chara - Monoecious plant
3. Marchantia - Dioecious plant
4. Sweet potato - Unisexual flower
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Consider the following statements:
| I: | Meiosis never occurs in organisms that are haploid |
| II: | Gametes are haploid and the parent plant body from which they arise must be diploid |
1. Only I is correct
2. Only II is correct
3. Both I and II are incorrect
4. Both I and II are correct
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