1. | sporangia → meiosis → two haploid cells → meiosis → two pollen grains per cell |
2. | pollen grain → meiosis → two generative cells → two tube cells per pollen grain |
3. | two haploid cells → meiosis → generative cell → tube cell-fertilization → pollen grain |
4. | microsporocyte → meiosis → microspores → mitosis → two haploid cells per pollen grain |
Assertion (A): | Nocturnal flowers are pollinated by moths. |
Reason (R): | Nocturnal flowers are highly fragrant and dull in colour |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
3. | (A) is True, (R) is False. |
4. | Both (A) and (R) are False |