- 1(current)
Q. No.A typical anther shows
a. Two lobes with two theca each
b. Each lode as dithecous
c. All cells in a given microsporangium as potential PMC
d. Thousands of micropores per microsporangium
Out of these statements
1. b is incorrect
2. a and b are correct
3. c and d are incorrect
4. a, b, c and d are correct
Subtopic: Stamen: Anther |
78%
Level 2: 60%+
Hints
Match the following :
| Column I | Column I | ||
| (I) | External fertilization | (i) | pollen grain |
| (II) | Androecium | (ii) | anther wall |
| (III) | Male gametophyte | (iii) | algae |
| (IV) | Primary parietal layer | (iv) | stamens |
1. I-iv; II-i; III-ii; IV-iii
2. I-iii; II-iv; III-i; IV-ii
3. I-iii; II-iv; III-ii; IV-i
4. I-iii; II-i; III-iv; IV-ii
Subtopic: Stamen: Anther |
89%
Level 1: 80%+
Hints
Assertion(A): Sporopollenin is one of the most resistant organic materials, and protects the pollen grain.
Reason(R): Pollen grains are well preserved as fossils.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Pollen grains are well preserved as fossils.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Stamen: Anther |
52%
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
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