All of the followings are the effects of red light on plant, EXCEPT:
Correct answer: C. Elongation of internodes is promoted
- A. Causes epicotyl (plumule) hook to unbend
- B. Induces increase in leaf area
- C. Elongation of internodes is promoted
- D. Stimulate flowering in long day plants
- E. Phytochrome 660 changes to phytochrome 730
Explanation
Red light does not promote internode elongation in plants. Promoting elongation of internodes: This is known as the stem elongation response. It is thought to be caused by the production of auxin, which stimulates cell elongation in the internodes.
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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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