Phototropic movement is controlled by (1) Auxin (2) Gibberellin (3) Cytokinin (4) Ethylene

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Phototropic movement is controlled by (1) Auxin (2) Gibberellin (3) Cytokinin (4) Ethylene

asked Jan 28, 2021 by anonymous

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Phototropic movement is controlled by (1) Auxin (2) Gibberellin (3) Cytolthiin (4) Ethylene

Description : Phototropic movement is controlled by (1) Auxin (2) Gibberellin (3) Cytolthiin (4) Ethylene

Last Answer : (1) Auxin Explanation: Phototropism is the growth of organisms in response to light. In plants, phototropism is a response to blue wavelengths of light and is caused by a redistribution of auxin from ... in quicker growth on the darker side and bending of the shoot toward the source of light.

Coconut milk is used in tissue culture in which present (a) cytokinin (b) auxin (c) gibberellin (d) ethylene.

Description : Coconut milk is used in tissue culture in which present (a) cytokinin (b) auxin (c) gibberellin (d) ethylene.

Last Answer : (a) cytokinin

It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield? (a) Cytokinin and Abscisic acid (b) Auxin and Ethylene(c) Gibberellin and Cytokinin (d) Gibberellin and Abscisic acid

Description : It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield? ... (b) Auxin and Ethylene (c) Gibberellin and Cytokinin (d) Gibberellin and Abscisic acid

Last Answer : (b) Auxin and Ethylene

Dwarfness can be controlled by treating the plant with (a) cytokinin (b) gibberellic acid (c) auxin (d) anti-gibberellin.

Description : Dwarfness can be controlled by treating the plant with (a) cytokinin (b) gibberellic acid (c) auxin (d) anti-gibberellin.

Last Answer : (b) gibberellic acid

Differentiation of shoot is controlled by (a) high auxin : cytokinin ratio (b) high cytokinin : auxin ratio (c) high gibberellin : auxin ration (d) high gibberellin : cytokinin ratio.

Description : Differentiation of shoot is controlled by (a) high auxin : cytokinin ratio (b) high cytokinin : auxin ratio (c) high gibberellin : auxin ration (d) high gibberellin : cytokinin ratio.

Last Answer : (b) high cytokinin : auxin ratio

Phototropic curvature is the result of uneven distribution of (a) gibberellin (b) phytochrome (c) cytokinins (d) auxin.

Description : Phototropic curvature is the result of uneven distribution of (a) gibberellin (b) phytochrome (c) cytokinins (d) auxin.

Last Answer : (d) auxin.

Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Description : Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Last Answer : Ans. ((d))

Hormone used in tissue culture for better growth is: (1) Auxin (2) Gibberellin (3) Cytokinin (4) Vernalin

Description : Hormone used in tissue culture for better growth is: (1) Auxin (2) Gibberellin (3) Cytokinin (4) Vernalin

Last Answer : Ans. ((d))

Apical dominance is caused by (a) abscisic acid in lateral bud (b) cytokinin in leaf tip (c) gibberellin in lateral buds (d) auxin in shoot tip.

Description : Apical dominance is caused by (a) abscisic acid in lateral bud (b) cytokinin in leaf tip (c) gibberellin in lateral buds (d) auxin in shoot tip.

Last Answer : (d) auxin in shoot tip.

The regulator which retards ageing/senescence of plant parts is (a) cytokinin (b) auxin (c) gibberellin (d) abscisic acid.

Description : The regulator which retards ageing/senescence of plant parts is (a) cytokinin (b) auxin (c) gibberellin (d) abscisic acid.

Last Answer : (a) cytokinin

Coconut milk factor is (a) an auxin (b) a gibberellin (c) abscisic acid (d) cytokinin

Description : Coconut milk factor is (a) an auxin (b) a gibberellin (c) abscisic acid (d) cytokinin

Last Answer : (d) cytokinin.

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots? (a) IAA and gibberellin (b) Auxin and cytokinin (c) Auxin and abscisic acid (d) Gibberellin and abscisic acid

Description : You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots? ... gibberellin (b) Auxin and cytokinin (c) Auxin and abscisic acid (d) Gibberellin and abscisic acid

Last Answer : (b) Auxin and cytokinin

During seed germination, its stored food is mobilized by (a) ABA (b) gibberellin (c) ethylene (d) cytokinin.

Description : During seed germination, its stored food is mobilized by (a) ABA (b) gibberellin (c) ethylene (d) cytokinin.

Last Answer : (b) gibberellin

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop. (a) Cytokinin (b) Gibberellin (c) Ethylene (d) Abscisic acid

Description : Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop. (a) Cytokinin (b) Gibberellin (c) Ethylene (d) Abscisic acid

Last Answer : (b) Gibberellin

Root development is promoted by (a) abscisic acid (b) auxin (c) gibberellin (d) ethylene

Description : Root development is promoted by (a) abscisic acid (b) auxin (c) gibberellin (d) ethylene

Last Answer : (d) ethylene.

The hormone responsible for ripening of fruits is (a) Ethylene (b) Cytokinin (c) Auxin (d) ABA

Description : The hormone responsible for ripening of fruits is (a) Ethylene (b) Cytokinin (c) Auxin (d) ABA

Last Answer : Ans. ((a))

Which of the following hormones can replace vernalisation? (a) Auxin (b) Cytokinin (c) Gibberellins (d) Ethylene

Description : Which of the following hormones can replace vernalisation? (a) Auxin (b) Cytokinin (c) Gibberellins (d) Ethylene

Last Answer : (c) Gibberellins

Which is employed for artificial ripening of banana fruits? (a) Auxin (b) Coumarin (c) Ethylene (d) Cytokinin

Description : Which is employed for artificial ripening of banana fruits? (a) Auxin (b) Coumarin (c) Ethylene (d) Cytokinin

Last Answer : (c) Ethylene

Which hormone is responsible for fruit ripening? (a) Ethylene (b) Auxin (c) Ethyl chloride (d) Cytokinin

Description : Which hormone is responsible for fruit ripening? (a) Ethylene (b) Auxin (c) Ethyl chloride (d) Cytokinin

Last Answer : (a) Ethylene

Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone (a) auxin (b) cytokinin (c) ethylene (d) abscisic acid.

Description : Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone (a) auxin (b) cytokinin (c) ethylene (d) abscisic acid.

Last Answer : (a) auxin

Hormone pair required for a callus to differentiate is a. auxin and cytokinin b. auxin and ethylene c. auxin and abscisic acid d. cytokinin and gibberellins

Description : Hormone pair required for a callus to differentiate is a. auxin and cytokinin b. auxin and ethylene c. auxin and abscisic acid d. cytokinin and gibberellins

Last Answer : a. auxin and cytokinin

Phototropic and geotropic movements are linked to (a) gibberellins (b) enzymes (c) auxin (d) cytokinins.

Description : Phototropic and geotropic movements are linked to (a) gibberellins (b) enzymes (c) auxin (d) cytokinins.

Last Answer : (c) auxin

What causes a green plant exposed to the light, on only one side, to bend towards the source of light as it grows? (a) Light stimulates plant cells on the lighted side to grow faster. (b) Auxin accumulates on the shaded side, stimulating greater cell elongation there. (c) Green plants need light to perform photosynthesis. (d) Green plants seek light because they are phototropic.

Description : What causes a green plant exposed to the light, on only one side, to bend towards the source of light as it grows? (a) Light stimulates plant cells on the lighted side to grow ... Green plants need light to perform photosynthesis. (d) Green plants seek light because they are phototropic.

Last Answer : (b) Auxin accumulates on the shaded side, stimulating greater cell elongation there

_____ is concerned with cell division. (1) Maleic hydrazide (2) Gibberellin (3) Auxins (4) Cytokinin

Description : _____ is concerned with cell division. (1) Maleic hydrazide (2) Gibberellin (3) Auxins (4) Cytokinin

Last Answer : (4) Cytokinin Explanation: Cytokinins are a group of hormones that promote cell division in plant roots and MOD shoots and the growth of buds Cytokinins increase cell division by stimulating the duction of proteins needed for mitosis.

Phototropic movement is controlled by

Description : Phototropic movement is controlled by

Last Answer : Auxin

Difference between auxin and cytokinin? -Biology

Description : Difference between auxin and cytokinin? -Biology

Last Answer : answer:

Difference between auxin and cytokinin? -Biology

Description : Difference between auxin and cytokinin? -Biology

Last Answer : answer:

Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients

Description : Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients

Last Answer : Ans. ((a))

Hormone responsible for senescence is (a) ABA (b) auxin (c) GA (d) cytokinin.

Description : Hormone responsible for senescence is (a) ABA (b) auxin (c) GA (d) cytokinin.

Last Answer : (a) ABA

Small cut pieces of soft stems are placed in growth medium with following plant hormones. Which combination of plant hormones will show slowest growth ? (1) Auxin + Cytokinin (2) Gibberellins + Auxin (3) Gibberellins + Cytokinin (4) Abscisic Acid + Auxin

Description : Small cut pieces of soft stems are placed in growth medium with following plant hormones. Which combination of plant hormones will show slowest growth ? (1) Auxin + Cytokinin (2) Gibberellins + Auxin (3) Gibberellins + Cytokinin (4) Abscisic Acid + Auxin

Last Answer : (4) Abscisic Acid + Auxin

Which plant growth regulator is used for ripening? a) GA b) IBA c) Ethylene d) Cytokinin

Description : Which plant growth regulator is used for ripening? a) GA b) IBA c) Ethylene d) Cytokinin

Last Answer : c) Ethylene

The hormone reducing transpiration rate by inducing stomatal closure is: (a) ABA (b) Ethylene (c) Cytokipin (d) Auxin

Description : The hormone reducing transpiration rate by inducing stomatal closure is: (a) ABA (b) Ethylene (c) Cytokipin (d) Auxin

Last Answer : Ans. ((a))

The major auxin produced in plants is: a. Indole-3-butyric acid (IBA) b. Naphthalene acetic acid (NAA) c. Indole-3-acetic acid (IAA) d. Ethylene

Description : The major auxin produced in plants is: a. Indole-3-butyric acid (IBA) b. Naphthalene acetic acid (NAA) c. Indole-3-acetic acid (IAA) d. Ethylene

Last Answer : Indole-3-acetic acid (IAA)

A plant hormone, which is primary regulator of abscission process is (a) Ethylene (b) Auxin (c) ABA (d) Gibberellins

Description : A plant hormone, which is primary regulator of abscission process is (a) Ethylene (b) Auxin (c) ABA (d) Gibberellins

Last Answer : (c) ABA

Movement of auxin is

Description : Movement of auxin is

Last Answer : Movement of auxin is A. Centripetal B. Basipetal C. Acropetal D. Both (B)and (C)

Which of the following movement is not related to auxin level? (a) Bending of shoot towards light (b) Movement of root towards soil (c) Nyctinastic leaf movements (d) Movement of sunflower head tracking the sun

Description : Which of the following movement is not related to auxin level? (a) Bending of shoot towards light (b) Movement of root towards soil (c) Nyctinastic leaf movements (d) Movement of sunflower head tracking the sun

Last Answer : (c) Nyctinastic leaf movements

The movement of auxin is largely (a) centripetal (b) basipetal (c) acropetal (d) both (a) and (c).

Description : The movement of auxin is largely (a) centripetal (b) basipetal (c) acropetal (d) both (a) and (c).

Last Answer : (b) basipetal

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when pla(a) It made possible the isolation and exact identification of auxin. (b) It is the basis for quantitative determination of small amounts of growth-promoting substances. (c) It supports the hypothesis that IAA is auxin. (d) It demonstrated polar movement of auxinsced on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?

Description : Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what ... . (c) It supports the hypothesis that IAA is auxin. (d) It demonstrated polar movement of auxins

Last Answer : (a) It made possible the isolation and exact identification of auxin.

What is meant by phototropic motion ?

Description : What is meant by phototropic motion ?

Last Answer : : Phototropic movement is a type of curvature of plants. The movement of the stems and branches of the plant is always towards the light and the movement of the roots is always against ... motion and the movement in the opposite direction of the original light is called negative phototropic motion.

What is Phototropic ?

Description : What is Phototropic ?

Last Answer : : Phototropic movement is a type of curvature of plants. The movement of the stems and branches of the plant is always towards the light and the movement of the roots is always against ... motion and the movement in the opposite direction of the original light is called negative phototropic motion.

How many types of phototropic movements ?

Description : How many types of phototropic movements ?

Last Answer : 2 types of phototropic movement

Stern is usually - (1) Positively Phototropic (2) Negatively Phototropic (3) Negatively geotropic (4) Positively acrotropic

Description : Stern is usually - (1) Positively Phototropic (2) Negatively Phototropic (3) Negatively geotropic (4) Positively acrotropic

Last Answer : (1) Positively Phototropic Explanation: Tropism is a growth movement whose direction is determined by the direction from which the stimulus strikes the plant. Most stems are positively phototropic, while most roots are said to be negatively phototropic.

The locomotion of insects to the source of light is called : (1) Phototropic (2) Hydrotropic (3) Phototactic (4) Thermotactic

Description : The locomotion of insects to the source of light is called : (1) Phototropic (2) Hydrotropic (3) Phototactic (4) Thermotactic

Last Answer : (1) Phototropic Explanation: The growth or movement of a plant part in response to a source of light is called phototropism. It is most often observed in plants, but can also occur in other organisms such as fungi.

Name the plant organs that grow positively geotropic and positively phototropic manner.

Description : Name the plant organs that grow positively geotropic and positively phototropic manner.

Last Answer : Ans: Roots grow positively geotropically and Stem grows positively phototropically.

Stem is usually (1) Positively Phototropic (2) Negatively Phototropic (3) Negatively geotropic (4) Positively acrotropic

Description : Stem is usually (1) Positively Phototropic (2) Negatively Phototropic (3) Negatively geotropic (4) Positively acrotropic

Last Answer : Positively Phototropic

The locomotion of insects to the source of light is called : (1) Phototropic (2) Hydrotropic (3) Phototactic (4) Thermotactic

Description : The locomotion of insects to the source of light is called : (1) Phototropic (2) Hydrotropic (3) Phototactic (4) Thermotactic

Last Answer : Phototropic

Functions of gibberellin in plant? -Biology

Description : Functions of gibberellin in plant? -Biology

Last Answer : answer: