Male gametophyte of angiosperms is shed at:
Correct answer: B. Three celled pollen grain
- A. Four celled pollen grain
- B. Three celled pollen grain
- C. Microspore mother cell
- D. Anther
Explanation
The male gametophyte or microspore is shed at 3rd nucleate stage. The microspore undergoes only two mitotic divisions.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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