Last seen: Jan 13, 2022
(d) C Explanation: Deficiency of vitamin C (which is necessary for collagen production and iron absorption) causes scurvy. It is characterised by ...
(b) Vitamin E Explanation: Tocopherol or vitamin E is fat soluble vitamin. It is antisterility factor and antioxidant for membrane lipids, skin, a...
(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion. Explanation: Auxin delays abscission of you...
(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion. Explanation: The physiological mechanism of...
(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion. Explanation: Active form of PFR is responsi...
(c) If the Assertion is correct but Reason is incorrect. Explanation: It has been demonstrated that flowering in plant is more of a response to th...
(b) (i), (ii), (iv) are correct and (iii) is incorrect. Explanation: The growth of the leaf is measured in term of surface area.
(d) Y = C2H4 ; X = C2H4 ; Z = ABA Explanation: Gibberellins stimulate the production of some mRNAs and then hydrolytic enzymes like amylase, lipas...
(b) Production of hydrolyzing enzymes Explanation: Gibberellins can promote seed germination in cereals due to production of hydrolyzing enzymes l...
(a) Cytokinins Explanation: Cytokinins promote cell division and inhibit the degradative reactions in detached leaves and slow down senescence in ...
(a) auxins Explanation: Went (1928) performed Avena curvature test for auxins.
(c) ABA Explanation: Abscisic acid (ABA) is a plant hormone which promotes dormancy in seeds and buds.
(a) thigmotropism Explanation: The curling of tendrils is a growth movement induced due to contact or touch. Such a movement is called thigmotropi...
(a) cytokinins Explanation: Cytokinins promote cell division and inhibit the degradative reactions in detached leaves and slow down senescence in ...
(d) Ethylene Explanation: Fruit ripening is controlled by hormone, ethylene. Ethylene is a gaseous hormone. It affects the growth, development, ri...
(d) Abscisic acid Explanation: Abscisic acid (ABA) induces dormancy. Robinson and Warming (1964), isolated a substance responsible for dormancy in...
(a) totipotency Explanation: Any cell which has an ability to develop into a complete organism is totipotent.
(b) Ethylene Explanation: Ethylene is the only gaseous natural plant growth regulator produced by all plant organs but its maximum production occu...
(b) 2,4-D Explanation: 2, 4-D (dichlorophenoxyacetic acid) is a common systemic pesticide/herbicide. It is a synthetic auxin (plant hormone) and i...
(c) Cytokinin Explanation: Cytokinins are substances which act primarily on cell division and have little or no effect on extension/growth. It del...