Which of the following movement is not related to auxin level ?
Correct answer: C. Nyctinastic leaf movements
- A. Bending of shoot towards light
- B. Movement of root towards soil
- C. Nyctinastic leaf movements
- D. Movement of sunflower head tracking the sun
Explanation
c) : Nyctinastic leaf movement is not related to auxin level. It is a movement of leaves of many species from nearly horizontal leaves during the day and nearly vertical at night. This movement are controlled by biological clock, while the bending of shoot towards light, movement of root towards soil and movement of sunflower head tracking the sun are the conditions related to auxins.
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Embryonic development covers fertilization, cleavage, formation of the blastula and gastrula, germ layers, organ formation and differentiation. Regeneration describes the replacement of lost tissues or body parts, whereas ageing involves gradual cellular and physiological changes linked to reduced repair, altered metabolism and declining organ function.
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