Q. No.Flowers that have a single ovule in the ovary and are packed into inflorescence are usually pollinated by:
1.
Water
2.
Bee
3.
Wind
4.
Bat
Pollen grains lose viability within 30 minutes of their release in some members of:
| 1. | Rosaceae | 2. | Leguminosae |
| 3. | Poaceae | 4. | Solanaceae |
The majority of water plants like water hyacinth and water lily are pollinated by:
| 1. | Water | 2. | Wind |
| 3. | Insects | 4. | Both 2 and 3 |
In artificial hybridization experiments, if the female plant produces unisexual flowers, emasculation:
| 1. | Must be done before maturity. |
| 2. | Must be done after maturity. |
| 3. | Must be done at maturity. |
| 4. | Is not needed. |
Consider the following statements regarding floral primordium:
| I: | It is formed at the shoot apical meristem |
| II: | The development of flowers is dependent on genetics, PGR, and environmental conditions. |
Of the two statements:
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect. |
At what temperature pollens can be stored for years in liquid nitrogen?
| 1. | 0°C | 2. | -100°C |
| 3. | -196°C | 4. | 4°C |
In angiosperms, the mature female gametophyte is represented by:
| 1. | Nucellus | 2. | Megaspore |
| 3. | MMC | 4. | Embryosac |
A typical angiosperm embryosac, at maturity, is:
| 1. | 8 celled and 8 nucleate | 2. | 8 celled and 7 nucleate |
| 3. | 7 celled and 8 nucleate | 4. | 7 celled and 7 nucleate |
Chasmocleistogamy [Amphicarpy] is not seen in:
| 1. | Viola [Common pansy] | 2. | Oxalis |
| 3. | Pisum sativum | 4. | Commelina |
The dominating pollinating agent of flowering plants amongst animals are:
| 1. | Arboreal mammals | 2. | Insects |
| 3. | Birds | 4. | Reptiles |
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