Plant physiology multiple choice questions answer key
|S.N.||Name of quiz||Test number|
|(01).||PGR MCQ: Plant Growth Regulators (Phytohormones)||01|
(01). PGR MCQ: Plant Growth Regulators (Phytohormones)
This page includes multiple choice objective questions from the main subject plant physiology. We will update this page whenever a new post is available.
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PGR MCQ: Plant Growth Regulators (Phytohormones)
PGR: Plant Growth Regulators. It is also known as Plant Hormones. Auxin, cytokinin, gibberllin, etc., are growth hormones. ABA is a growth retardant hormone.
Avena Curvature Test: Avena Curvature Test or ACT is a bioassay. It is related to auxin. It measures the angle of curvature of a decapitated coleoptile.
2, 4-D: 2, 4-D belongs to auxin. It is used as a herbicide to kill broad-leaves weeds. It acts as plant growth regulator at low concentrations.
Apical dominance: In apical dominance, the growth of terminal portion is dominated by the plant growth regulator auxin.
Seed dormancy: Some seeds require dormancy for a certain period of time. Germination won’t take place during dormancy. Gibberllin is a strong and most used plant growth regulator to break the dormancy of seeds.
ABA: ABA or Abscisic acid is an anti plant growth regulator. It supress the growth and development of a plant. We can use it to develop a bonsai.