Plant growth hormone receptors, namely TIR1, GID1, COI1 and PYL1 were knocked out independently in Arabidopsis plant. The resultant plants are named as tir1, gid1, coit and pyl1. Which one […]
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CSIR NET Life Science Previous Year Questions and Solution on EXTENSION OF MENDELIAN PRINCIPLES (62)
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Function of JAZ Proteins in Jasmonic Acid Signaling
Which one of the following is the correct function of JAZ (JASMONATE ZIM- DOMAIN) protein family, a key regulator of Jasmonic Acid (JA) signalling response? (1) Binds to MYC2 and […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Key Components and Mechanisms of Ethylene Signaling Pathway in Plants
Ethylene is an important plant hormone that regulates several aspects of plant growth and development. Some statements are given below in relation to ethylene signalling pathways: A. Unbound ethylene receptors […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Arabidopsis Ethylene Triple Response
Dark grown Arabidopsis seedlings when exposed to ethylene gas shows typical triple response. Following are certain statements regarding the triple response: A. A dominant ethylene receptor mutant will not show […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Key Characteristics of the Ethylene-Induced Triple Response in Dark-Grown Arabidopsis Seedlings
Dark grown Arabidopsis seedlings show ‘triple response’ when exposed to ethylenehormone. Which one of the following options is characteristic of ‘triple response’? (1) Reduced shoot elongation, increased shoot thickness and […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Using Triple Response Morphology in Genetic Screens to Decipher Ethylene Signaling Pathways
Typical morphological defects are routinely used in genetic screens to identify novel genes in signal transduction pathways. Which one of the following morphology has been used to decipher the ethylene […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Key Features of Ethylene-Induced Triple Response in Dark-Grown Seedlings
Dark-grown seedlings display ‘triple response’ when exposed to ethylene. Which one of the fallowing is NOT a part of ‘triple response’? (1) Decrease in epicotyl elongation. (2) Rapid unfolding and […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Cytokinin Mimicking det1 Mutation
Which of the following plant hormones can mimic the det1 mutation, causing de-etiolation and chloroplast development in dark? (1) Cytokinin (2) Gibberellin (3) Auxin (4) Ethylene Correct answer: […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Ethylene Receptor Binding and CTR1 Kinase Activation in Plant Ethylene Signaling
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 […]
CSIR NET Life Science Previous Year Questions and Solution Plant Hormones
Role of Phytochrome Interacting Factor (PIF) in Gibberellic Acid Sensitivity and Mutant Identification
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 […]
