Assertion (A): | The megaspore mother cell divide mitotically to produce four spores. |
Reason (R): | Megaspore mother cells are diploid and megaspore is haploid. |
1. | Both (A) & (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) & (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) is false but (R) is true. |
From the statements given below, choose the option that is true for a typical female gametophyte of a flowering plant:
I: | It is 8-nucleate and 7-celled at maturity |
II: | It is free-nuclear during the development |
III: | It is situated inside the integument but outside the nucellus |
IV: | It has an egg apparatus situated at the chalazal end |
1. | I and IV | 2. | II and III |
3. | I and II | 4. | II and IV |