The advantage of cleistogamy is:
Correct answer: A. No dependence on pollinators
- A. No dependence on pollinators
- B. Vivipary
- C. Higher genetic variability
- D. More vigorous offspring
Explanation
Cleistogamy is the process of pollination and fertilization before the flower has opened. In such flowers, the anther and stigma lie close to each other. When anthers dehisce in the flower buds, pollen grains come in contact with the stigma to effect pollination. Thus, cleistogamous flowers are invariably autogamous as there is no chance of crosspollen landing on the stigma. Cleistogamous flowers produce assured seedset even in the absence of pollinators.
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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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