Cut or excised leaves remain green for long if induced to root or dipped in :
Correct answer: B. Cytokinins
- A. Gibberellins
- B. Cytokinins
- C. Auxins
- D. Ethylene
Explanation
b) : Cytokinin are plant growth hormones which are basic in nature. Cytokinins induce formation of new leaves chloroplasts in leaves, which inturn keeps the leaves green for a longer duration of time. Cytokinins applied to marketed vegetables can keep them fresh for several days. Shelf life of cut shoots and flowers is prolonged by employing the hormones.
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About Growth and Development
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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