- 1(current)
Q. No.A typical angiosperm anther is:
1. Bilobed and polythecous
2. Unilobed and monothecous
3. Multilobed and monothecous
4. Bilobed and dithecous
Subtopic: Stamen: Anther | Stamen: Microsporangium |
95%
Level 1: 80%+
Hints
The outer hard layer of the pollen wall is made up of:
| 1. | Callose, which is easily digested by enzymes |
| 2. | Sporopollenin, which is resistant to all enzymes |
| 3. | Hemicellulose, which is difficult to digest by enzymes |
| 4. | Calcium pectate, which is easily digested by enzymes |
Subtopic: Stamen: Microsporangium |
96%
Level 1: 80%+
Hints
At what temperature pollens can be stored for years in liquid nitrogen?
| 1. | 0°C | 2. | -100°C |
| 3. | -196°C | 4. | 4°C |
Subtopic: Stamen: Microsporangium | Stamen: Male Gametophyte |
98%
Level 1: 80%+
Hints
Identify A-D in the given enlarged view of one microsporangium showing wall layers:
| A | B | C | D | |
| 1. | Epidermis | Endothecium | Middle layers | Tapetum |
| 2. | Epithelium | Endothelium | Middle layers | Tapetum |
| 3. | Endothecium | Epidermis | Tapetum | Middle layers |
| 4. | Epithelium | Endothelium | Tapetum | Middle layers |
Subtopic: Stamen: Microsporangium |
92%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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