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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 […]

Agrobacterium tumefacienscauses crown gall diseases in dicot plants. Which phytohormone genes are present of T-DNA? (1) Auxin and cytokinin (2) Auxin only (3) Cytokinin only (4) Cytokinin and Gibberellic acid […]

A transgenic lettuce plant was generated by over expressing isopentenyl transferase (IPT) gene under the control of the promoter of senescence activator gene (SAG12). Following are some statements regarding this […]

Which one of the following statements is correct for the transport of cytokinin in plants? (1) It takes place only from root to shoot. (2) it takes place only from […]

The plant hormones, auxins and cytokinins, and their interactions play an important role in regulating apical dominance_ The following figure represents a” experiment related to the study of gene interactions […]

The following statements are made regarding cytokinin (CE) biosynthesis plants: A.Trans-zeatin (tZ) and iso-pentenyladenile (iP) are common active forms of isoprenoid CKs. B. CKs are present as nucleoside and glycosidic […]