In gymnosperms male gametophyte develops from:
Correct answer: A. Microspore
- A. Microspore
- B. Megaspore
- C. Embryo sac
- D. Synergids
Explanation
In gymnosperms, the male gametophyte develops from the microspore. The microspores are produced within the microsporangia, which are located within the male cones (pollen cones or microstrobili) of gymnosperm plants. Each microspore undergoes mitotic divisions and differentiation to form a multicellular male gametophyte, ultimately giving rise to sperm cells.
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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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