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) […]
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CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Auxin Signal Transduction Pathway
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 […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Two-component histidine kinase receptor system
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 […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Signaling Pathways of Plant Hormones
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 […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Role of Gibberellin and Abscisic Acid in Programmed Cell Death of Barley Aleurone
62. Programmed cell death (PCD) plays an important role in development of barley aleurone. The following statements are made with respect to involvement of various phytohormones and signaling molecules. A […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Key Roles of Plant Growth Hormones
Following are some statements regarding plant growth hormones. A. Ethylene regulates abscission. B. Gibberlins do not play any role in flowering C. Auxin and cytokinin promote cell division. D. Over […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Matching Phytohormones with Their Key Functions: Auxin, Gibberellins, Cytokinins, and Ethylene
Given below are names of phytohormones in column I and their associated features/effects/function in column II. I […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Arabidopsis Mutants Defective in Strigolactones
A researcher has obtained an Arabidopsis mutant defective in strigolactones (SLs), a novel plant hormone. The following statements were made regarding the mutant phenotype: A. Shoot branching gets enhanced in […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Strigolactones as Key Signaling Molecules Inducing Hyphal Branching in Arbuscular Mycorrhizal Fungi
58. Which one of the following plant derived signalling molecule induces hyphal branching of arbuscular mycorrhizal fungi, a phenomenon that is observed at the initial stages of colonisation of these […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Key Steps in Jasmonic Acid Synthesis
Following are some statements for synthesis of jasmonic acid in plants A. 12-oxo-phytodienoic acid is produced in chloroplast and transported to peroxisome. B. Action of lipoxygenase, alleneoxide synthase and allene […]
