Description : Which one of the following pairs, is not correctly matched? (a) Gibberellic acid - Leaf fall (b) Cytokinin - Cell division (c) IAA - Cell wall elongation (d) Abscissic acid - Stomatal closure
Last Answer : (a) Gibberellic acid - Leaf fall
Description : Which is produced during water stress that brings stomatal closure? (a) Ethylene (b) Abscisic acid (c) Ferulic acid (d) Coumarin
Last Answer : (b) Abscisic acid
Description : Abscisic acid controls (a) cell division (b) leaf fall and dormancy (c) shoot elongation (d) cell elongation and wall formation.
Last Answer : b) leaf fall and dormancy
Description : Consider the following pairs Plant hormone Function/Effect 1. Indole-3 acetic acid - Rooting in cuttings 2. Gibberellic acid - Stomatal closure 3. Ethylene - Fruit ripening 4. Zeatin - Cell division Which of the above pairs are correctly matched ... 3 (b) 1, 2, and 4 (c) 2 and 4 (d) 1, 2, 3, and 4
Last Answer : Ans:(b)
Description : The hormone reducing transpiration rate by inducing stomatal closure is: (a) ABA (b) Ethylene (c) Cytokipin (d) Auxin
Last Answer : Ans. ((a))
Description : Gibberellins promote (a) seed germination (b) seed dormancy (c) leaf fall (d) root elongation.
Last Answer : (c) leaf fall
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 : 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
Description : Leaf fall can be prevented with the help of (a) abscisic acid (b) auxins (c) florigen (d) cytokinins.
Last Answer : (d) cytokinins.
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.
Description : Root development is promoted by (a) abscisic acid (b) auxin (c) gibberellin (d) ethylene
Last Answer : (d) ethylene.
Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant duri
Last Answer : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal ... durign day time, and the other at night.
Description : stomatal crypts are found in the leaf of
Last Answer : stomatal crypts are found in the leaf of A. Sunflower B. Olender C. Maize D. Nymphaea
Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above ... Both processes can happen together because the diffusion coefficient of water and CO2 is different
Last Answer : (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different
Description : Is a carrot a root leaf stem flower or seed?
Last Answer : lalalalal
Description : Jute fibre is obtained from which part of the Jute? (a) Root (b) Stem (c) Leaf (d) Fruit
Last Answer : Ans: (b)
Description : Potato is a modified form of (a) Root (b) Stem (c) Fruit (d) Leaf
Description : The cuticle is absent in - (1) Leaf (2) Stem (3) Root (4) Fruit
Last Answer : (1) Leaf Explanation: The epidermis of the stem and the leaf is usually surrounded by a thin, covering called cuticle. It is formed by a waxy substance called cutin. It is meant for preventing excessive evaporation of water. Cuticle is absent in the root epidermis.
Description : In onion the edible part is – (1) Leaf (2) Root (3) Stem (4) Flower
Last Answer : (1) Leaf Explanation: Edible plant sterns are one part of plants that are eaten by humans. Most plants are made up of roots, stems, leaves, flowers, buds and produce fruits containing seeds. The edible portion in an onion is swollen leaves with a bit of stem.
Description : When you eat Carrot, you are eating: (1) Root (2) Leaf (3) Stem (4) Fruit
Last Answer : (1) Root Explanation: When we eat carrot, we are eating root part of a plant.
Description : Which part of the tobacco plant is infected by Meloidogyne incognita? (a) Stem (b) Root (c) Flower (d) Leaf
Last Answer : b) Root
Description : In plants auxin are mainly present in: a. Root tips b. Stem end c. Shoot tips d. Leaf margins
Last Answer : Shoot tips
Description : In Bougainvillea, thorns are the modifications of (a) adventitious root (b) stem (c) leaf (d) stipules.
Last Answer : (b) stem
Description : A viruses free plant can be obtained from — propagation. a. Leaf b. Stem c. Root d. Meristem culture
Last Answer : d. Meristem culture
Description : Propagation of ginger is generally done using _______ . a) seed b)stem (rhizome ) c)root d)leaf
Last Answer : b)stem (rhizome )
Description : In Bougainvillea thorns are the modifications of : (1) Adventitious root (2) Stem (3) Leaf (4) Stipules
Last Answer : (2) Stem
Description : In onion the edible part is (1) Leaf (2) Root (3) Stem (4) Flower
Last Answer : Leaf
Description : Onion is a modified form of (1) leaf (2) stem (3) root (4) None of these
Last Answer : stem
Description : A stress which develops within an object when it attempts to expand or contract in response to a temperature changes, but cannot, due to being held rigidly in place. a. elongation b. thermal stress c. expansion contraction d. thermal expansion
Last Answer : thermal stress
Description : Removal of apical bud results in (a) formation of new apical bud (b) elongation of main stem (c) death of plant (d) formation of lateral branching.
Last Answer : d) formation of lateral branching.
Description : Structural characteristics of the cells in the elongation zone of the root. -Biology
Last Answer : answer:
Description : Plants absorb most of the water needed by them through their (a) Embryonic zone (b) Growing point (c) Root hairs (d) Zone of elongation
Last Answer : Ans:(c)
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 : ABA is involved in (a) shoot elongation (b) increased cell division (c) dormancy of seeds (d) root elongation.
Last Answer : (d) root elongation.
Description : Root hair develop from the region of (a) elongation (b) root cap (c) meristematic activity (d) maturation.
Last Answer : (d) maturation.
Description : Root hairs develop from the region of : (1) Elongation (2) root cap (3) Meristematic activity (4) Maturation
Last Answer : (4) Maturation
Description : Which of the following statements are true? 1. Cytokinins promote stomatal opening 2. Sprays of indole -3 acetic acid can inhibit premature fruit fall 3. The growth movements caused by a unilateral stimulus are known as nastic movements 4. The ... 4 (b) 2 and 4 (c) 1, 2, and 4 (d) 1, 2, 3, and 4
Last Answer : Ans:(a)
Description : Choose the right combination: (A) Quinine', antimalarial, isoquinoline alkaloid (B) Reserpine, -antihypertensive, indole alkaloid (C) Quantitative microscopy, stomatal number, myrrh (D) Palmitic acid, salicylic acid , fatty acids
Last Answer : (B) Reserpine, -antihypertensive, indole alkaloid
Description : What is the role of Abscisic acid? -Biology
Description : What is abscisic acid? -Biology
Description : What is the function of abscisic acid? -Biology
Description : Why is abscisic acid also known as stress hormone? -Biology
Description : Where is abscisic acid produced? -Biology
Description : What is ABA (Abscisic acid)? -Biology
Description : What are the functions of Abscisic acid? -Biology
Description : What type of osmotic environment was present to bring about the abscisic acid trigger?
Last Answer : Need answer
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))