Biology Practice: Transport in Plants (Mock Test 3 - Advanced Mechanisms)
1. The physical force theory that explains how water reaches the top of a 100-meter tall Sequoia tree is the:
2. What happens to the Turgor Pressure of guard cells when they lose water to the surrounding epidermal cells?
3. Why is the cell wall of a root hair considered "freely permeable" while the cell membrane is "semi-permeable"?
4. Which of the following best describes the "Cohesion" property of water molecules?
5. In the "Mass Flow Hypothesis," food moves from 'Source' to 'Sink' because of:
6. If the concentration of minerals in the soil is lower than inside the root hair, how does the plant absorb more minerals?
7. What is the role of 'Adhesion' in the ascent of sap?
8. Which of the following prevents the backflow or 'leaking' of water out of the vascular cylinder in the roots?
9. "Wilting" in plants occurs when:
10. During the 'Ascent of Sap', the most powerful force involved in lifting water in tall trees is:
11. What is the state of a cell when its Wall Pressure equals its Turgor Pressure?
12. Phloem transport is considered 'Bidirectional' because:
13. The loss of turgidity in guard cells leads to:
14. Why are minerals transported via 'Active Transport' more often than 'Passive Diffusion'?
15. The 'Semi-permeable' nature of the cell membrane is due to its ________ structure.
16. High humidity slows down transpiration because:
17. Which phloem element lacks a nucleus at maturity but remains living?
18. The process of 'Imbibition' is best observed when:
19. In a Turgid cell, the formula for Diffusion Pressure Deficit (DPD) is:
20. Which of the following is NOT a significance of Transpiration?
