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

Ethylene binding to its receptor does lead to (1) activation of the receptor (2) phosphorylation of the receptor (3) activation of CTR Raf kinase (4) activation of Ethylene insensitive factor […]

While screening an EMS-mutagenized population of a plant, a researcher identified a mutant with reduced gibberellic acid sensitivity. Which one of the following proteins is most likely to be defective […]

Following are certain statements regarding gibberellic acid (GA) signal transduction: (A) DELLA proteins negatively regulate GA signalling. (B) Degradation of GA receptor (GID1) is mediated by DELLA proteins. (C) Ubiquitination […]

A researcher developed a mutant of Arabidopsis plant where the function of SLEEPY 1 (SLY1) containing SCF complex has been disrupted. Which one of the following statements is INCORRECT in […]

Examples of many factors that regulate plant height in response to gibberellic acid (GA) are listed below: A. Binding of a GA bound repressor to the promoter of the DELLA […]

Most of DNA binding protein binds to DNA by particular motif to modulate gene expression. Genes which are under regulation of gibberllin acid have GRE which is recognized by transcription […]

66. Ethylene signaling pathway is important for a fruit ripening. Which one of the following responses is routinely used to identity ethylene signaling pathway components? (1) Cotyledon expansion response (2) […]

The following statements are made to describe auxin signal transduction pathway, from receptor binding to the physiological response: A. Auxin response factors (ARFs) are nuclear proteins that bind to auxin […]

64 Which one of the following plant hormones use the two-component histidine kinase receptor system for signal transduction? (1) Auxin                 (2) Gibberellin (3) Cytokinin          (4) Abscisic […]

63 Match the above columns involving plant hormones and their signalling pathways: Column I                        Column II                        Column III (A) Auxin and                   (a) Trans-                   (i) Response mediated Gibberellins                      […]