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Questions and Answers
Which of the following is true about cytokinin biosynthesis?
Which of the following is true about cytokinin biosynthesis?
- Cytokinin biosynthesis is irreversible.
- Cytokinin biosynthesis is not affected by CK or ABA.
- Mutations in cytokinin biosynthesis pathways result in loss of overall cytokinin function. (correct)
- Cytokinin biosynthesis is regulated by nitrogen.
Which of the following correctly describes the relationship between cytokinins and auxins?
Which of the following correctly describes the relationship between cytokinins and auxins?
- Cytokinins inhibit branching in the shoot.
- Cytokinins have a positive impact on cell proliferation in the shoot at low concentrations. (correct)
- Cytokinins maintain stem cell activity at the root apical meristem.
- Cytokinins promote lateral organ initiation at the shoot apical meristem.
How are cytokinins and auxins related in terms of their function at the root apex?
How are cytokinins and auxins related in terms of their function at the root apex?
- Cytokinins maintain stem cell activity at the root apex.
- Cytokinins and auxins both promote cell differentiation at the root apex.
- Cytokinins and auxins have no impact on each other's function at the root apex.
- Auxins are transported downwards from the shoot meristem to the root apex. (correct)
Which hormone is associated with promoting branching in plants?
Which hormone is associated with promoting branching in plants?
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Which hormone inhibits branch outgrowth in plants?
Which hormone inhibits branch outgrowth in plants?
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What is the major active compound of gibberellins in Arabidopsis?
What is the major active compound of gibberellins in Arabidopsis?
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What is the role of DELLA proteins in the GA signaling pathway?
What is the role of DELLA proteins in the GA signaling pathway?
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