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 […]
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CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Auxin Redistribution and Gravitropic Bending in Young Dicot Seedlings
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) […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Indole-3-Acetic Acid Structure
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 […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Lateral Auxin Redistribution and Phototropic Bending in Oat Coleoptiles
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) […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Tryptophan Auxotroph in Corn
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 […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
IAA causes cell elongation
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 […]
CSIR NET Life Science Previous Year Questions and Solution PHOTORESPIRATION AND RESPIRATION
Pyruvate as the Direct Precursor of Alanine and Related Amino Acids in Plant Glycolysis
During glycolysis in plants, alanine and related 10 acids are directly produced from which one of i‘he following precursors? (1) 3-Phosphoglycerate (2) Phosphoenolpyruvate (3) Pyruvate (4) Acetyl-CoA Introduction Alanine and […]
CSIR NET Life Science Previous Year Questions and Solution PHOTORESPIRATION AND RESPIRATION
Key Biosynthetic Precursors from Glycolysis and Citric Acid Cycle in Plants
24. Glycolysis and citric acid cycle contribute precursors to many biosynthesis pathway in plants. column X lists names of the precursors and column Y lists the product synthesized. Column […]
CSIR NET Life Science Previous Year Questions and Solution PHOTORESPIRATION AND RESPIRATION
First Committed Precursor in Chlorophyll Biosynthesis
23. First committed precursor in biosynthesis of chlorophyll is: (1) delta-aminolevulinic acid (2) Porphobilinogen (3) Protoporphyrin IX (4) coproporphyrinogen III The first committed precursor in the biosynthesis of chlorophyll is delta-aminolevulinic […]
CSIR NET Life Science Previous Year Questions and Solution PHOTORESPIRATION AND RESPIRATION
Respiratory Quotient in Plant Metabolism
22. Following are certain statements regarding respiratory metabolism on plants: A. Respiratory quotient during partial breakdown of carbohydrate (alcoholic fermentation) will be infinity. B. Respiratory quotient indirectly provides inforrnation about […]
