Tag: CSIR NET Life Science Previous Year Questions and Solution Plant Hormones

25. Which plant hormones signal transduction pathway includes genes ‘rht, ‘spy’, ‘gai’? (1) Auxin                (2) Gibberlicacid (3) Abscisic acid      (4) Ethylene Correct answer: (2) Gibberellic acid Explanation: The genes rht, spy, […]

24 During germination of seeds, after imbibition of water first step would be (1) Mobilization of reserve food (2) Transcription of specific genes (3) Cell division (4)  Embryo differentiation Correct […]

23. Among the following which is not involved in plant defense signaling pathway (1) Gibberellic acid  (2) Ethylene (3) Salicylic acid      (4) Jasmonic acid Correct answer: (1) Gibberellic acid. Explanation: […]

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: […]