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Question
Which of the following plant growth regulators is gaseous in nature?
Which of the following plant growth regulators is gaseous in nature?
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Solution
The correct option is A Ethylene
Plant growth regulators are small, simple chemicals that control the growth and development of a plant. These are also termed as phytohormones or plant hormones. Phytohormones are broadly divided into two categories:
1. Plant growth promoter: Such plant growth regulators that are involved in plant growth-promoting activities like cell division, flowering, etc. are called plant growth promoters. For example, cytokinin, auxin, etc.
2. Plant growth inhibitor: The plant growth regulators that are involved in growth-inhibiting activities like dormancy (temporary inactive state of the cell), abscission (natural shedding of plant parts). For example, abscisic acid.
Ethylene is a gaseous plant growth regulator that acts as both promoter as well as inhibitor.
Abscisic acid is a plant growth regulator that is also called the stress hormone as it increases tolerance in plants towards different kinds of stress conditions.
Cytokinin is a plant growth regulator that is found naturally in regions of rapid cell division, e.g., root apices, young fruits, etc.
Indole acetic acid is a naturally occurring auxin, another class of plant growth regulators.
Plant growth regulators are small, simple chemicals that control the growth and development of a plant. These are also termed as phytohormones or plant hormones. Phytohormones are broadly divided into two categories:
1. Plant growth promoter: Such plant growth regulators that are involved in plant growth-promoting activities like cell division, flowering, etc. are called plant growth promoters. For example, cytokinin, auxin, etc.
2. Plant growth inhibitor: The plant growth regulators that are involved in growth-inhibiting activities like dormancy (temporary inactive state of the cell), abscission (natural shedding of plant parts). For example, abscisic acid.
Ethylene is a gaseous plant growth regulator that acts as both promoter as well as inhibitor.
Abscisic acid is a plant growth regulator that is also called the stress hormone as it increases tolerance in plants towards different kinds of stress conditions.
Cytokinin is a plant growth regulator that is found naturally in regions of rapid cell division, e.g., root apices, young fruits, etc.
Indole acetic acid is a naturally occurring auxin, another class of plant growth regulators.
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