(A) Used extensively in agriculture and horticulture practice
(B) rapid cell division
(C) Initiate rooting in stem cutting
(D) Speed up malting process
(E) Promotes female flower in cucumbers
(F) Dormancy in seeds/buds.
How many function from above perform by the Auxin in plants.

Three

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Two

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Five

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Four

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Solution

The correct option is A Two
Auxin is a plant hormone which promotes the cell elongation. It is produced in the stem tip. It also has a role in growth and development of plants. Auxin is used in agricultural and horiculture practices. They help in initiating root in stem cutting.
So, the correct option is 'Two'

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1) Ethylene breaks the seed and bud dormancy
2) Ethylene promotes rapid petiole elongation in deep water rise plant
3) Ethylene promotes root growth and root hair formation
4) Ethylene promotes female flowers in cucumbers

Q. Which the following commercial application of phytohormones are correct?
A. Auxins are extensively used in agriculture to promote flowering in pineapples.
B. Ethephon is used for promoting female flower in cucumbers, thereby increase the yield.
C. Abscisic acid is of great use in the ripening the fruits like mango, orange, pineapple etc.
D. Cytokinins are used for keeping freshness in leafy and green vegetables.

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Question 30.01:

Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Write a line to explain the meaning of the following terms related to auxins.
Auxins precursors

Anti-auxins

Synthetic auxins

Q. A plant hormone that promotes female flowers in cucumber is:

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(A) Used extensively in agriculture and horticulture practice(B) rapid cell division(C) Initiate rooting in stem cutting (D) Speed up malting process(E) Promotes female flower in cucumbers(F) Dormancy in seeds/buds.How many function from above perform by the Auxin in plants.

(A) Used extensively in agriculture and horticulture practice
(B) rapid cell division
(C) Initiate rooting in stem cutting
(D) Speed up malting process
(E) Promotes female flower in cucumbers
(F) Dormancy in seeds/buds.
How many function from above perform by the Auxin in plants.