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Biology
Plant Growth and Development
85 questions from 33 papers, each with its answer.
- 85 questions
- 33 papers
- 2.41% of Biology
Plant Growth Regulators - Cytokinins
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Which of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?
Cytokinins delay senescence via nutrient mobilization (Richmond-Lang effect).
Cytokinins promote cell division and direct mobilization of nutrients towards developing and mature tissues, helping to delay senescence (Richmond-Lang effect).
Development, Differentiation and PGRs
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Read the following statements on plant growth and development.
A. Parthenocarpy can be induced by auxins.
B. Plant growth regulators can be involved in promotion as well as inhibition of growth.
C. Dedifferentiation is a pre-requisite for re-differentiation.
D. Abscisic acid is a plant growth promoter.
E. Apical dominance promotes the growth of lateral buds.
Choose the option with all correct statements.A, B, and C are true. D is false (ABA is an inhibitor), E is false (apical dominance suppresses lateral buds).
Auxins induce parthenocarpy (A is true). Phytohormones act as promoters or inhibitors (B is true). Differentiated parenchymal cells must dedifferentiate into meristems before redifferentiating (C is true). ABA is an inhibitor (D is false). Apical dominance inhibits lateral buds (E is false).
That is every question in Plant Growth and Development for this filter.
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