Author: admin

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 […]

6.Cytokinin synthesis is maximum in (1) Roots                (2) Leaves (3) Shoots tip         (4) Fruits Cytokinin synthesis is maximum in: (1) Roots. Correct concept In most vascular plants, cytokinins are synthesized primarily in […]

5. A young dicot seedling (e.gsoyabean) is subjected tc gravity stimulus by laying it horizontally on a surface the shoot bends upwards and root bends downward. Indicate the reason. (1) […]

The plant hormone indole-3-acetic acid (I.) is ores,: in most plants. The structure of this hormone is related to which one of the following amino acids? (1) Glutamic acid            […]

Bending of Oat coleoptiles tip toward source of unilateral light of wavelength 454 is due to (1) lateral distribution of auxin toward shaded area (2) Polar transport of auxin (3) […]

A tryptophan auxotroph in corn showed 50 times more accumulation of IAA then the normal. Probable explanation for this is (1) There exist another tryptophan independent pathway for IAA synthesis […]

In plants IAA causes cell elongation due to – (1) Increase in pH of Apoplast (2) Increase in pH of cytoplasm (3) Decrease in pH of Apoplast (4) Increase in […]