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- #Medical
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- #Plant Physiology
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Which among the following is an intrinsic factor necessary for plant development?
Temperature
Light
Growth regulators
Water
Answers (1)
Conditions for Growth: Internal Factors -
The following internal factors affect the growth of the plant:
1. There are several classes of growth regulators. Some promote the growth like Auxins, Florigen, Cytokinins, Gibberellins, etc. while some are growth inhibitors like ethylene, abscisic and chlorocholine chloride.
2. The ratio of carbohydrates and nitrogen also govern the growth of plants. Presence of more carbohydrates as compared to nitrogen facilitates vegetative growth, fruiting and flowering while the presence of more nitrogenous compounds results in poor vegetative growth.
3. Genotypes are responsible for controlling all the metabolic activities, growth and development of a plant. Expression of genes in the correct sequence is controlled by two things, i.e. environment and genes.
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Growth regulators are internal factors while all others are external factors.
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