Description : ________ can release lateral buds from apical dominance : a. Auxins b. Gibberellins c. Kinins d. None of above
Last Answer : Kinins
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
Description : Many _________ in super optimal concentrations also act as growth inhibitors : a. Auxins b. Gibberellins c. Cytokinins d. All of above
Last Answer : Auxins
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
Last Answer : (B) ABA
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.
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
Description : Plants, protein, RNA, DNA contents are increased by a. Auxins b. Adenine c. Cytokinins d. None of above
Last Answer : Cytokinins
Description : Leaf senescence can be retarded by the application of : a. Auxins b. Gibberellins c. Kinins d. Abscicic acid
Description : ________ have ability to alter the sex of the flowers: a. Auxins b. Gibberellins c. Kinins d. None of above
Last Answer : Gibberellins
Description : Direction of plant growth is controlled by: a. Auxins b. Gibberellins c. Kinins d. All of above
Description : Compounds possessing hormone like properties which have small molecular weight, are termed as : a. Auxins b. Gibberellins c. Kinins d. None of these
Description : Role of auxins in apical dominance? -Biology
Last Answer : answer:
Description : How does pruning help in making the hedge dense? (a) It releases wound hormones. (b) It induces the differentiation of new shoots from the rootstock. (c) It frees axillary buds from apical dominance. (d) The apical shoot grows faster after pruning
Last Answer : (c) It frees axillary buds from apical dominance.
Description : Phototropic and geotropic movements are linked to (a) gibberellins (b) enzymes (c) auxin (d) cytokinins.
Last Answer : (c) auxin
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
Description : Cell elongation in internodal regions of the green plants takes place due to (a) indole acetic acid (b) cytokinins (c) gibberellins (d) ethylene
Last Answer : (c) gibberellins
Description : Leaf fall can be prevented with the help of (a) abscisic acid (b) auxins (c) florigen (d) cytokinins.
Last Answer : (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
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
Description : Difference between auxins and gibberellins? -Biology
Description : The following is not a plant growth regulator a) Acetic acid b) Auxins c) Gibberellins d) Ethylene
Last Answer : a) Acetic acid
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
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
Description : Factors involved in the formation of auxins are: a. Age of apex b. Light c. Zinc d. All of the 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
Description : Auxin antagonists compounds interact with auxins as: a. Counteract b. Increase c. Decrease d. None of the above
Last Answer : Counteract
Description : Through their effects on plant growth regulators, what do the temperature and light control in the plants? (a) Apical dominance (b) Flowering (c) Closure of stomata (d) Fruit elongation
Last Answer : (b) Flowering
Description : Apical bud becomes ________ in mango at fruit bud differentiation : a. Flattened b. Rounded c. Dome shaped d. Elongated
Last Answer : Dome shaped
Description : Which of the following hormones can replace vernalisation? (a) Auxin (b) Cytokinin (c) Gibberellins (d) Ethylene
Last Answer : (c) Gibberellins
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
Description : What is apical dominance? -Biology
Description : Advantage of apical dominance to a plant? -Biology
Description : Apical dominance can be removed by? -Biology
Description : Why is apical dominance adaptive? -Biology
Description : What controls apical dominance? -Biology
Description : Apical dominance lateral buds. -Biology
Description : Apical dominance of potato. -Biology
Description : $ Those lateral buds which are near the apical bud are called dormant buds. ! Dormancy of lateral buds is due to Apical dominance
Last Answer : $ Those lateral buds which are near the apical bud are called dormant buds. ! Dormancy of lateral buds is ... is wrong D. If both As and R are wrong.
Description : The PGR causes apical bud dominance
Last Answer : Ans. Auxins
Description : Mowing grass lawn facilitates better maintenance because (a) wounding stimulates regeneration (b) removal of apical dominance and stimulation of intercalary meristem (c) removal of apical dominance (d) removal of apical dominance and promotion of lateral meristem.
Last Answer : (b) removal of apical dominance and stimulation of intercalary meristem