Category: CSIR NET Life Science Previous Year Questions and Solution Plant Physiology

22. Gibberellic acid activates alpha-amylase activity in (1) Endosperm        (2) Aleuronic layer (3) Cotyledons        (4) Embryo Correct answer: (2) Aleuronic (aleurone) layer The plant growth regulator gibberellic acid (GA) activates […]

21 .During germination of barley seeds, enzymes for mobilization of reserve material to developing embryo are secreted from (1) Endosperm        (2) Embryo (3) Aleurone layer   (4) Embryonic leaves Concept in […]

Gibberellic acid stimulates seed germination in monocots by activation of digestive enzymes by acting on (1) Endosperm            (2) Aleurone layer (3) Embryo                    (4) Cotyledons Correct answer: (2) Aleurone layer […]

Among the following which hormone can induce flowering in short day plants grown even under long duration of light (1) Gibberllic acid (2) Auxins (3) Cytokinin                 (4) Abscisic acid Correct […]

Which plant growth regulator is involved in activating alpha-amylase activity in germinating seeds? (1) Auxin                            (2) Cytokinin (3) Gibberlic acid           (4) Brassinosteroids Correct answer: (3) Gibberlic acid Gibberellins produced […]

Hydrolysis of stored proteins produced free amino acids which can be used for glucose biosynthesis. Phytohormone responsible for conversion of stored protein into glucose by activating in germinating cereals is- […]

16. The dwarfing gene which was responsible for green revolution is involved in signaling of which plant hormone? (1) Gibberlic acid (2) Cytokinin (3) Absicic acid          (4) Ethylene Correct answer: […]

Mobilization of starch by alpha amylase activity is induced by (1) Auxin                         (2) Cytokinin (3) Gibberellic acid            (4) Ethylene Correct answer: (3) Gibberellic acid. Gibberellic acid (GA) stimulates the […]

Which one of the following statements related to components/features of senescence in plants is INCORRECT? (1) Programmed cell death in plants may generate functional cells or tissues. (2) Senescence can […]

13. Transgenic tobacco plants over-expressing isopentenyl transferase (IPT) under the control of promoter region of Senescence Associated Receptor kinase (P SARK) were exposed to drought for 15 days followed by […]