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Plant-Water Relation Test Online

Test Name Plant-Water Relation Test Online
Subject General Knowledge
Test Type Mcqs
Total Question 15
Total Marks 30
Total Time 10
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Plant–water relations concern how plants control the hydration of their cells, including the collection of water from the soil, its transport within the plant and its loss by evaporation from the leaves. The water status of plants is usually expressed as ‘water potential’, which has units of pressure, is always negative, and in simple form is the algebraic sum of the hydrostatic pressure and the osmotic pressure of water. Flow of water through plant and soil over macroscopic distances is driven by gradients in hydrostatic pressure.

Plant-Water Relation Test Online Questions & Answers Mcqs

Basic Science

1. Which ion has the maximum role in the opening and closing of stomata?

Question 1 of 15

2. Name the phenomenon in which drops of water ooze out of the leaf margin?

Question 2 of 15

3. Stometa open when the guard cells are:

Question 3 of 15

4. Ascent of sap is best explained by:

Question 4 of 15

5. Cell membrane is:

Question 5 of 15

6. Transpiration helps in:

Question 6 of 15

7. Under water scarcity condition, a hormone causes closure of stomata. The name of the hormone is:

Question 7 of 15

8. Seeds swell when placed in water because of:

Question 8 of 15

9. Which of the following has the highest water potential?

Question 9 of 15

10. The direction and the rate of water movement from cell to cell is based on:

Question 10 of 15

11. Water crosses the endodermal cells through:

Question 11 of 15

12. A cell when placed in a solution gets plasmolysed. What is largely present in between the cell wall and plasmolysed contents?

Question 12 of 15

13. Stomata open at night in:

Question 13 of 15

14. When a cell is fully turgid, which one of the following is zero?

Question 14 of 15

15. The rate of transpiration is measured by:

Question 15 of 15


 

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