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

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

1 Answer

Answer :

Auxins
by

Related questions

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

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

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

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

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

Difference between auxins and gibberellins? -Biology

Description : Difference between auxins and gibberellins? -Biology

Last Answer : answer:

Difference between auxins and gibberellins? -Biology

Description : Difference between auxins and gibberellins? -Biology

Last Answer : answer:

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

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

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

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

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

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

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

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

Controlled inhibition of seed is termed as: a. Priming b. Soaking c. Chilling d. None of above

Description : Controlled inhibition of seed is termed as: a. Priming b. Soaking c. Chilling d. None of above

Last Answer : None of above

Callus is a term usually referring to: a. The tissue on the collar of a limb b. The first tissue develops on a cut surface just before the root formation iniates. c. Deformed growth on plant limbs d. A disease of plant leaves and limbs

Description : Callus is a term usually referring to: a. The tissue on the collar of a limb b. The first tissue develops on a cut surface just before the root formation iniates. c. Deformed growth on plant limbs d. A disease of plant leaves and limbs

Last Answer : The first tissue develops on a cut surface just before the root formation iniates

In plants, __________ is the process of converting stored energy into energy for plant growth. a. Transpiration b. Photosynthesis c. Respiration d. Pollination

Description : In plants, __________ is the process of converting stored energy into energy for plant growth. a. Transpiration b. Photosynthesis c. Respiration d. Pollination

Last Answer : Respiration

In temperate climates, pruning should not be done near the end of the summer because: a. New growth will not harden before winter b. It may increase foliage disease c. Plants will not recover in time to produce new growth before winter d. Sever “bleeding” from the cuts will kill the plant

Description : In temperate climates, pruning should not be done near the end of the summer because: a. New growth will not harden before winter b. It may increase foliage disease c. Plants will not recover in time to produce new growth before winter d. Sever “bleeding” from the cuts will kill the plant

Last Answer : New growth will not harden before winter

Abscisic acid (ABA) is natural plant hormone, which: a. Promote the growth b. Initiate the ripening c. Induce the fruit maturity d. retards the growth

Description : Abscisic acid (ABA) is natural plant hormone, which: a. Promote the growth b. Initiate the ripening c. Induce the fruit maturity d. retards the growth

Last Answer : retards the growth

Dormancy is a function of interaction of growth promoter like GA and growth inhibitor like _________: a. ABA b. Cycocell c. Alar d. Paclobutrazole

Description : Dormancy is a function of interaction of growth promoter like GA and growth inhibitor like _________: a. ABA b. Cycocell c. Alar d. Paclobutrazole

Last Answer : ABA

Pruning in old fruit trees increases fruit bud formation by increasing ______: a. Carbohydrates b. New vegetative growth c. Hormonal contents d. Cell sap

Description : Pruning in old fruit trees increases fruit bud formation by increasing ______: a. Carbohydrates b. New vegetative growth c. Hormonal contents d. Cell sap

Last Answer : New vegetative growth

Low temperature helps to _________ growth inhibitors: a. Increase b. Decrease c. Store d. Produce

Description : Low temperature helps to _________ growth inhibitors: a. Increase b. Decrease c. Store d. Produce

Last Answer : Decrease

Date growth does not cease if temperature does not fall below: a. 0°C. b. 10°C c. 18°C d. 20°C

Description : Date growth does not cease if temperature does not fall below: a. 0°C. b. 10°C c. 18°C d. 20°C

Last Answer : 18°C

Low temperature regime in summer which stops growth of mango is : a. 35°F b. 30°F c. 20°F d. 18°F

Description : Low temperature regime in summer which stops growth of mango is : a. 35°F b. 30°F c. 20°F d. 18°F

Last Answer : 18°F

Growth retardants are the substances which slow down : a. Cell division b. Cell elongation c. a & b d. None of the above

Description : Growth retardants are the substances which slow down : a. Cell division b. Cell elongation c. a & b d. None of the above

Last Answer : a & b

The amount of growth regulators present in naturally parthenocarpic fruits is: a. High b. Low c. Intermediate d. None of above

Description : The amount of growth regulators present in naturally parthenocarpic fruits is: a. High b. Low c. Intermediate d. None of above

Last Answer : High

New growth of plants need _________ water for proper development: a. Low b. Medium c. High d. Very High

Description : New growth of plants need _________ water for proper development: a. Low b. Medium c. High d. Very High

Last Answer : High

Most commonly used growth retardants are a. Phosphon b. MH c. Caumarin d. None of above

Description : Most commonly used growth retardants are a. Phosphon b. MH c. Caumarin d. None of above

Last Answer : Phosphon

Nitrogen in vegetables is needed for a. Vegetative growth b. Ripening /maturity c. Reproductive growth d. None of these

Description : Nitrogen in vegetables is needed for a. Vegetative growth b. Ripening /maturity c. Reproductive growth d. None of these

Last Answer : Vegetative growth

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.

Kinins?

Description : Kinins?

Last Answer : DefinitionKinins are proteins in the blood that affect certain muscle contractions and blood pressure (especially low blood pressure).They also:Increase blood flow throughout the bodyMake it easier for fluids to ... , eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 45.

The activity of kinins is modulated by (A) Prostaglandins (B) Ca++ (C) Increased cAMP level (D) Increased cGMP level

Description : The activity of kinins is modulated by (A) Prostaglandins (B) Ca++ (C) Increased cAMP level (D) Increased cGMP level

Last Answer : Answer : A

Action of kinins is to (A) Increase salt excretion (B) Decrease salt retention (C) Decrease water retention (D) Increase both salt and water excretion

Description : Action of kinins is to (A) Increase salt excretion (B) Decrease salt retention (C) Decrease water retention (D) Increase both salt and water excretion

Last Answer : Answer : D

Which of the following activates Hageman factor in blood clotting? B A. Kinins B. Negatively charged surfaces C. Complement C5a D. Positively charged collagen

Description : Which of the following activates Hageman factor in blood clotting? B A. Kinins B. Negatively charged surfaces C. Complement C5a D. Positively charged collagen

Last Answer : Negatively charged surfaces

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

A plant hormone used for inducing morphogenesis in plant tissue culture is (a) cytokinins (b) ethylene (c) abscisic acid (d) gibberellins.

Description : A plant hormone used for inducing morphogenesis in plant tissue culture is (a) cytokinins (b) ethylene (c) abscisic acid (d) gibberellins.

Last Answer : (a) cytokinins

How deep should I plant my summer squash?

Description : How deep should I plant my summer squash?

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How deep should I plant my summer squash?

Description : How deep should I plant my summer squash?

Last Answer : Are you planting from seed or starter plants?

Which of the following is the proper recommendation for pruning trees at planting. a. Pruning should be limited to shaping the plant by removing dead or damaged limbs b. Trees should be cut back to at least one-half their size to prevent stress on root systems c. Trees should not be pruned until the third year after planting d. Trees should not be pruned at all – the latest trend is to let them develop naturally

Description : Which of the following is the proper recommendation for pruning trees at planting. a. Pruning should be limited to shaping the plant by removing dead or damaged limbs b. Trees should be cut back to at ... d. Trees should not be pruned at all - the latest trend is to let them develop naturally

Last Answer : Pruning should be limited to shaping the plant by removing dead or damaged limbs

Mrs. Khan loves spring flowering bulbs. Which of the following would you suggest for Mrs. Khan to plant? a. Hyacinthus orientalis b. Coleus x hybridus c. Lonicera japonica d. Gardenia jasminoide

Description : Mrs. Khan loves spring flowering bulbs. Which of the following would you suggest for Mrs. Khan to plant? a. Hyacinthus orientalis b. Coleus x hybridus c. Lonicera japonica d. Gardenia jasminoide

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A plant that dies to the ground at the end of each growing season but comes back from the same root stubs year after year is most accurately described as: a. Perennial b. Annual c. Biennial d. Herbaceous perennial

Description : A plant that dies to the ground at the end of each growing season but comes back from the same root stubs year after year is most accurately described as: a. Perennial b. Annual c. Biennial d. Herbaceous perennial

Last Answer : Herbaceous perennial

A shade loving border plant is: a. Marigold b. Impatiens c. Zinnia d. Chrysanthemum

Description : A shade loving border plant is: a. Marigold b. Impatiens c. Zinnia d. Chrysanthemum

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The basic underlying principle of using a mist propagation system is that it: a. Keeps the propagation medium uniformly moist and supplies moisture to the base of the cuttings b. Keeps the plant material cool c. Cools the propagation medium to promote root formation and development d. Increases humidity around the cutting and reduces transpiration

Description : The basic underlying principle of using a mist propagation system is that it: a. Keeps the propagation medium uniformly moist and supplies moisture to the base of the cuttings b. ... medium to promote root formation and development d. Increases humidity around the cutting and reduces transpiration

Last Answer : Increases humidity around the cutting and reduces transpiration

The loss of water in the form of vapor from the surface of plant leaves is referred to as: a. Transpiration b. Respiration c. Oxidation d. Condensation

Description : The loss of water in the form of vapor from the surface of plant leaves is referred to as: a. Transpiration b. Respiration c. Oxidation d. Condensation

Last Answer : Transpiration