How do auxin's control a plants response to light?

How do auxin's control a plants response to light?
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Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene

Description : Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene

Last Answer : (D) Ethylene

Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene

Description : Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene

Last Answer : (B) ABA

Hormones which control apical dominance are: a. Auxins b. Cytokinins c. Gibberellins d. Polyamines

Description : Hormones which control apical dominance are: a. Auxins b. Cytokinins c. Gibberellins d. Polyamines

Last Answer : Cytokinins

Plants, protein, RNA, DNA contents are increased by a. Auxins b. Adenine c. Cytokinins d. None of above

Description : Plants, protein, RNA, DNA contents are increased by a. Auxins b. Adenine c. Cytokinins d. None of above

Last Answer : Cytokinins

Parthenocarpic tomato fruits can be producedby (a) treating the plants with phenylmercuric acetate (b) removing androecium of flowers before pollen grains are released (c) treating the plants with low concentrations of gibberellic acid and auxins (d) raising the plants from vernalized seeds

Description : Parthenocarpic tomato fruits can be producedby (a) treating the plants with phenylmercuric acetate (b) removing androecium of flowers before pollen grains are released (c) treating the plants with low concentrations of gibberellic acid and auxins (d) raising the plants from vernalized seeds

Last Answer : (c) treating the plants with low concentrations of gibberellic acid and auxins

Factors involved in the formation of auxins are: a. Age of apex b. Light c. Zinc d. All of the above

Description : Factors involved in the formation of auxins are: a. Age of apex b. Light c. Zinc d. All of the above

Last Answer : All of the above

How do auxins promote the growth of a tendril around a support? Describe in brief. (CCE 2012) -Biology-10

Description : How do auxins promote the growth of a tendril around a support? Describe in brief. (CCE 2012) -Biology-10

Last Answer : Auxin is plant hormone which is synthesized at the tip of the shoot. It helps the cell grow longer. When a tendril comes in contact with a support, auxin stimulates faster growth ... , indole acetaldehyde. Synthetic auxins: Napthalene acetic aicd, indole butyric acid, 2,4-dichorophenoxyacetic acid.

How do auxins promote the growth of a tendril around a support ? -Biology-10

Description : How do auxins promote the growth of a tendril around a support ? -Biology-10

Last Answer : When the tip of a tendril touches a support, then the auxins present in its tip move to that side of tip which is away from the support. Auxins promote growth. So, due to more auxins in it, ... the side which is in contact with the support and makes the tendril twirl (or bend) around the support.

What are the physiological effects of Auxins? -Biology

Description : What are the physiological effects of Auxins? -Biology

Last Answer : answer:

Difference between auxins and gibberellins? -Biology

Description : Difference between auxins and gibberellins? -Biology

Last Answer : answer:

Name some examples of auxins? -Biology

Description : Name some examples of auxins? -Biology

Last Answer : answer:

Role of auxins in apical dominance? -Biology

Description : Role of auxins in apical dominance? -Biology

Last Answer : answer:

Commercial uses of auxins. -Biology

Description : Commercial uses of auxins. -Biology

Last Answer : answer:

Difference between auxins and gibberellins? -Biology

Description : Difference between auxins and gibberellins? -Biology

Last Answer : answer:

Name some examples of auxins? -Biology

Description : Name some examples of auxins? -Biology

Last Answer : answer:

Role of auxins in apical dominance? -Biology

Description : Role of auxins in apical dominance? -Biology

Last Answer : answer:

Commercial uses of auxins. -Biology

Description : Commercial uses of auxins. -Biology

Last Answer : answer:

Which of the following plant hormones are incorrectly paired? (1) abscisic acid- transpiration (2) auxins- apical dominance (3) cytoldnins- senescence (4) gibberlins- bud and seed dormancy

Description : Which of the following plant hormones are incorrectly paired? (1) abscisic acid- transpiration (2) auxins- apical dominance (3) cytoldnins- senescence (4) gibberlins- bud and seed dormancy

Last Answer : (4) gibberlins- bud and seed dormancy Explanation: Abscisic acid is responsible for responsible for dormancy of various types. It maintains dormancy in seeds and buds, stimulates the closing of stomata. Gibberellins are responsible for cell division and growth in cell size.

_____ 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.

What are auxins? What is affect of auxins on phototropism and geotropism?

Description : What are auxins? What is affect of auxins on phototropism and geotropism?

Last Answer : Auxins are plants hormones. Geotropism and phototropism are caused by unequal growth of plant parts and controlled by auxins. Effect on phototropism: - From shoot, auxins pass down to the growing ... of root towards force of gravity. So roots grow in earth and show positive geotropic response. 

Auxins as herbicides are supposed to be: a. Non toxic to animals and human beings b. Highly selective c. Exert their action at extremely low concentration d. All of the above

Description : Auxins as herbicides are supposed to be: a. Non toxic to animals and human beings b. Highly selective c. Exert their action at extremely low concentration d. All of the above

Last Answer : All of the above

Leaf senescence can be retarded by the application of : a. Auxins b. Gibberellins c. Kinins d. Abscicic acid

Description : Leaf senescence can be retarded by the application of : a. Auxins b. Gibberellins c. Kinins d. Abscicic acid

Last Answer : Kinins

________ can release lateral buds from apical dominance : a. Auxins b. Gibberellins c. Kinins d. None of above

Description : ________ can release lateral buds from apical dominance : a. Auxins b. Gibberellins c. Kinins d. None of above

Last Answer : Kinins

________ have ability to alter the sex of the flowers: a. Auxins b. Gibberellins c. Kinins d. None of above

Description : ________ have ability to alter the sex of the flowers: a. Auxins b. Gibberellins c. Kinins d. None of above

Last Answer : Gibberellins

Auxins have effective role in : a. Delay in flower opening b. Cell division c. Reduction of pre harvest fruit drop d. All of the above

Description : Auxins have effective role in : a. Delay in flower opening b. Cell division c. Reduction of pre harvest fruit drop d. All of the above

Last Answer : Reduction of pre harvest fruit drop

Direction of plant growth is controlled by: a. Auxins b. Gibberellins c. Kinins d. All of above

Description : Direction of plant growth is controlled by: a. Auxins b. Gibberellins c. Kinins d. All of above

Last Answer : Auxins

Many _________ in super optimal concentrations also act as growth inhibitors : a. Auxins b. Gibberellins c. Cytokinins d. All of above

Description : Many _________ in super optimal concentrations also act as growth inhibitors : a. Auxins b. Gibberellins c. Cytokinins d. All of above

Last Answer : Auxins

Compounds possessing hormone like properties which have small molecular weight, are termed as : a. Auxins b. Gibberellins c. Kinins d. None of these

Description : Compounds possessing hormone like properties which have small molecular weight, are termed as : a. Auxins b. Gibberellins c. Kinins d. None of these

Last Answer : Kinins

The compounds which inhibit the activity of auxins are known as: a. Auxin antagonists b. Antiauxins c. Epinostic agent d. All of above

Description : The compounds which inhibit the activity of auxins are known as: a. Auxin antagonists b. Antiauxins c. Epinostic agent d. All of above

Last Answer : Antiauxins

Auxin antagonists compounds interact with auxins as: a. Counteract b. Increase c. Decrease d. None of the above

Description : Auxin antagonists compounds interact with auxins as: a. Counteract b. Increase c. Decrease d. None of the above

Last Answer : Counteract

Cut or excised leaves remain green for long if induced to root or dipped in (a) gibberellins (b) cytokinins (c) auxins (d) ethylene.

Description : Cut or excised leaves remain green for long if induced to root or dipped in (a) gibberellins (b) cytokinins (c) auxins (d) ethylene.

Last Answer : (b) cytokinins

Leaf fall can be prevented with the help of (a) abscisic acid (b) auxins (c) florigen (d) cytokinins.

Description : Leaf fall can be prevented with the help of (a) abscisic acid (b) auxins (c) florigen (d) cytokinins.

Last Answer : (d) cytokinins.

Fruit and leaf drop at early stages can be prevented by the application of (a) ethylene (b) auxins (c) gibberellic acid (d) cytokinins.

Description : Fruit and leaf drop at early stages can be prevented by the application of (a) ethylene (b) auxins (c) gibberellic acid (d) cytokinins.

Last Answer : (b) auxins

The aleurone layer in maize grain is specially rich in (a) proteins (b) starch (c) lipids (d) auxins.

Description : The aleurone layer in maize grain is specially rich in (a) proteins (b) starch (c) lipids (d) auxins.

Last Answer : (a) proteins

Fruit and leaf drop at early stages can be prevented by the application of: (1) Ethylene (2) Auxins (3) Gibberellic acid (4) Cytokinins

Description : Fruit and leaf drop at early stages can be prevented by the application of: (1) Ethylene (2) Auxins (3) Gibberellic acid (4) Cytokinins

Last Answer : (2) Auxins

Rootex contains a) Auxins b) ABA c) Kinetin d) Ethylene

Description : Rootex contains a) Auxins b) ABA c) Kinetin d) Ethylene

Last Answer : a) Auxins

The following is not a plant growth regulator a) Acetic acid b) Auxins c) Gibberellins d) Ethylene

Description : The following is not a plant growth regulator a) Acetic acid b) Auxins c) Gibberellins d) Ethylene

Last Answer : a) Acetic acid

Which of the following plant hormones are incorrectly paired? (1) abscisic acid- transpiration (2) auxins-apical dominance (3) cytokinins- senescence (4) gibberlins- bud and seed dormancy

Description : Which of the following plant hormones are incorrectly paired? (1) abscisic acid- transpiration (2) auxins-apical dominance (3) cytokinins- senescence (4) gibberlins- bud and seed dormancy

Last Answer : gibberlins- bud and seed dormancy

The physiological response of plants in relation to length of light

Description : The physiological response of plants in relation to length of light

Last Answer : Ans. Photoperiodism