Q. No.
An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is:
| 1. | Cuticle | 2. | Sporopollenin |
| 3. | Lignin | 4. | Cellulose |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The gynoecium consists of many free pistils in flowers of
1. Aloe
2. Tomato
3. Papaver
4. Michelia
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Even in absence of pollinating agents, seed setting is assured in:
| 1. | Commelina | 2. | Zostera |
| 3. | Salvia | 4. | Fig |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which one of the following statements is wrong?
| 1. | When pollen is shed at two-celled stage, double fertilization does not take place. |
| 2. | Vegetative cell is larger than generative cell. |
| 3. | Pollen grains in some plants remain viable for months. |
| 4. | Intine is made up of cellulose and pectin. |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Plants with ovaries having only one or a few ovules, are generally pollinated by:
1. Bees
2. Butterflies
3. Birds
4. Wind
What is the function of germ pore?
1. Emergence of radicle
2. Absorption of water for seed germination
3. Initiation of pollen tube
4. Release of male gametes
Perisperm differs from endosperm in:
| 1. | having no reserved food. |
| 2. | being a diploid tissue. |
| 3. | its formation by fusion of a secondary nucleus with several sperms. |
| 4. | being a haploid tissue. |
Advantage of cleistogamy is :
1. More vigorous offspring
2. No dependence of pollinators
3. Vivipary
4. Higher genetic variability
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
© 2024 GoodEd Technologies Pvt. Ltd.