How many of the following statement(s) is/are correct regarding cytokinins?
I. They act in association with other growth regulators.
II. They are also known as the true cell division factor.
III. They do not have any effect on mitotic division.
IV. They are used in tissue culture experiments.

One

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Three

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Four

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Solution

The correct option is C Three
Cytokinins act along with other plant growth regulators. In association with auxins, cytokinins promote cell division and are considered as the true cell division factor. It plays a vital role in the morphogenesis of plants and is used in tissue culture experiments. In tissue culture, cytokinin in association with auxin promotes mitosis in the cells. Cytokinin helps in cell division, cell enlargement, and cell maturation.

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Similar questions

How many of the following statement(s) is/are correct regarding cytokinins?
I. They act in association with other growth regulators.
II. They are also known as the true cell division factor.
III. They do not have any effect on mitotic division.
IV. They are used in tissue culture experiments.

Question 22
Which of the following statements are true for eukaryotic cells?

(i) They do not have a nuclear membrane.
(ii) They have a well organised nucleus.
(iii) They have a nuclear membrane.
(iv) Blue green algae are eukaryotic cells.

(a) ii and iv
(b) ii and iii
(c) i and ii
(d) i and iv

Correct statements among (I) to (IV) regarding silicons are :

I. They are polymers with hydrophobic character.

II. They are biocompatible.

III. In general, they have high thermal stability and how dielectric strength.

IV. Usually, they are resistant to oxidation and used as greases.

Q. Which of the following are true for eukaryotic cells?
(i) They do not have a nuclear menbrane.
(ii) They have a well organized nucleus.
(iii) They have a nuclear membrane.
(iv) Blue green algae are eukaryotic cells.

Question 8
Given below are statements about the harmful effects of weeds on crop plants.
(i) They interfere in harvesting.
(ii) They help crop plants to grow healthily.
(iii) They compete with crop plants for water, nutrients, space and light.
(iv) They affect plant growth.

Choose the correct combination of statements.
(a) i, iii, iv
(b) iii only
(c) iii, iv
(d) i, ii, iii, iv

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Cytokinin

Standard XIII Biology

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How many of the following statement(s) is/are correct regarding cytokinins? I. They act in association with other growth regulators. II. They are also known as the true cell division factor. III. They do not have any effect on mitotic division. IV. They are used in tissue culture experiments.

How many of the following statement(s) is/are correct regarding cytokinins?
I. They act in association with other growth regulators.
II. They are also known as the true cell division factor.
III. They do not have any effect on mitotic division.
IV. They are used in tissue culture experiments.