Which of the following phytohormone and its function is incorrectly matched ?

Cytokinin - slows down senescence

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Abscisic acid - induces dormancy.

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Auxins - promotes growth of lateral branches.

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Ethylene - increases rate of respiration in climacteric fruits.

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Solution

The correct option is A Auxins - promotes growth of lateral branches.
cytokinins are sprayed on cut flowers to improve their shelf life as it slows down senescence.
Abscisic acid is known as stress hormone and it induces seed and bud dormancy during unfavorable conditions.
Ethylene promotes ripening of fruits, in climacteric fruits it increases the rate of respiration.
Auxin is responsible for increase in height of the plant due to which it suppresses the growth of lateral buds, phenomenon known as apical dominance.
So, the correct answer is 'Auxins - promotes growth of lateral branches.'

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Similar questions

Q. Pick up the correct statements.
(A) Cytokinins promote cell division.
(B) Auxins promote growth.
(C) Abscisic acid promotes growth.
(D) Gibberellins inhibit growth.

Q. Assertion: Phytohormones are the plant compounds that can promote and inhibit the plant growth.
Reason: There are some phytohormones like auxin, cytokinins which play a role in plant growth and some phytohormones like abscisic acid which inhibit the plant growth.

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.

Question 20
The substance that triggers the fall of mature leaves and fruits from plants is

(a) auxin
(b) gibberellin
(c) abscisic acid
(d) cytokinin

Q. Choose the right from the following.
(i) In light, hormone auxin, helps the cells to grow longer in plants.
(ii) Plant hormone gibberellins help in growth of a stem.
(iii) Cytokinin inhibits cell division.
(iv) Abscisic acid promotes growth in plants.

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