What is required by the plants to grow?
Correct answer: C. Both (A) and (B)
- A. Water
- B. Suitable temperature
- C. Both (A) and (B)
- D. None of these
Explanation
The plant growth rate is affected by a number of factors both internal and external External factors are temperature, light, oxygen, carbon dioxide, water, nutrition etc. while internal factors are hormones, vitamins, etc.
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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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