6-furfuryl amino purine, 2 ,4-dichlorophenoxy acetic acid and indole-3 acetic acid are examples respectively for
- Synthetic auxin, kinetin and natural auxin
- Gibberellin, natural auxin and kinetin
- Natural auxin, kinetin and synthetic auxin
- Kinetin, synthetic auxin and natural auxin
The Correct Option is D
Approach Solution - 1
Approach Solution -2
Explanation:
- 6-furfural amino purine is also known as kinetin.
- It is a type of cytokinin hormone which helps in promoting cell division of roots and shoots of plants.
- 2,4-dichlorophenoxyacetic acid is a synthetic auxin which has been used as an herbicide to control unwanted tough plants, most commonly known as broadleaf weeds.
- Indole-3-acetic acid, also called IAA is known to be the first naturally occurring auxin that takes part in inducing rooting in the cuttings.
Therefore, 6-furfural amino purine, 2,4-dichlorophenoxyacetic acid and Indole-3-acetic acid are examples of kinetin, Synthetic auxin and natural auxin respectively. Hence, option (D) is correct
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Concepts Used:
Plant Growth and Development
Growth in Plants:
Plants have the distinctive ability to grow throughout their life. The meristem cells present there in the roots and shoot apical lead to the primary growth of the plant. The primary growth which happens or takes place at the tips of the stem and roots of the plant contributes to the elongation of the plant along its axis.
In the later stages of growth in plants, the growth in dicotyledonous, vascular cambium, gymnosperms, and cork-cambium are also caused by the existence of meristems in them. These intercalary meristems are put up to increase the girth of the organs of the plant in which they are active. Such type of growth is commonly known as secondary growth.
Many parameters such as area, volume, fresh weight, cell number, dry weight, length, etc are utilized to measure the growth in plants as increase in the amount of protoplasm is responsible for the growth in plants.
Read More: Plant Growth and Development