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

The alternative pathway of respiration can be inhibited by (1) Cyanide (2) SHAM (3) Arachidonic add (4) Ampicillin Introduction Plants have an alternative respiratory pathway that bypasses parts of the […]

16. In arum lily, the temperature of inflorescence rise around 10°C as compare to plant during blooming. The natural trigger for heat production in the inflorescences of Saummatum guttatum (voodoo […]

15. Following statements are related to oxidative phosphorylation A. Redox reactions of electron transport chain coupled with ATP synthesis are collectively called oxidative phosphorylation. B.Three major processes: glycolysis, oxidative pentose […]

The oxidation pentose phosphate pathway provides the reducing equivalents for nitrite reduction in plastids (leucoplasts) of non-green tissues. Which one of the following statements would be correct for the above […]

13. Which one of the following statements is INCORRECT about the role of oxidative pentose phosphate pathway in plant metabolism? (1) Generation of NADPH required to drive biosynthetic reactions. (2) […]

Pyruvate dehydrogenase complex has sophisticated regulatory mechanisms including reversible phosphorylation. Various metabolites are also able to modulate the dehydrogenase complex. Which one of the following statements is NOT correct? (1) […]

11. During episodes of anoxia in plants, pyruvate produced in glycolysis is initially fermented to lactate. During later stage, there is an increase in the fermentation to ethanol and decrease […]

10. Pyrurate dehydrogenase is subject to feedback inhibition by its products in glycolysis. Some of the chemical compounds which might be involved in the process, are listed below: A. NADH                  […]

9. Ribulose bisphosphate carboxylase (Rubisco) catalyzes both carboxylation and oxygenation of ribulose-1,5bisphosphate. The latter reaction initiates a physiological process known as ‘photorespiration’. The following are certain statements on photorespiration: (A) […]

8. Following  are certain   statements regarding photorespiration pathway in plants: (A) The first two-carbon (2C) compound synthesized by the action of Rubisco in the chloroplast is glycolate (B) Glycolate […]