Biology Practice: Plant Coordination (Mock Test 3 - Advanced Processes & Mechanisms)
1. What is the mechanism behind "Apical Dominance" induced by Auxins?
2. How do Gibberellins mechanically cause "Bolting" in rosette plants?
3. What is the biochemical role of "Abscisic Acid" (ABA) during environmental stress like drought?
4. The "Seismonastic" movement in Mimosa pudica is caused by the sudden loss of turgor in which part?
5. Which process is primarily responsible for the curvature of a stem toward light (Phototropism)?
6. What is the mechanism by which Ethylene causes "Fruit Ripening"?
7. The "Anti-auxin" effect of Cytokinins is seen when they:
8. Which mechanism describes "Geotropism" in roots?
9. What is the mechanism of "Thigmotropism" in plant tendrils?
10. "Parthenocarpy" is an advanced process used in agriculture to produce:
11. Why is ABA called the "Stress Hormone"?
12. The term "Senescence" refers to the mechanism of:
13. In "Hydrotropism," which part of the plant shows a positive response?
14. What is the chemical name of the most common natural auxin?
15. "Bolting" is typically seen in which type of plants?
16. The mechanism of "Dormancy" in seeds is beneficial because:
17. Which tropism is primarily responsible for the roots growing deep into the soil for anchorage?
18. "Nastic movements" differ from "Tropic movements" because they are:
19. Which hormone is often used to maintain the freshness of cut flowers and vegetables?
20. The "Tactic" movement (not in ICSE syllabus directly but good for logic) involves:
