Question

Which of the following statements are right about “Guttation”? A. The term is given by Stephan Hales
B. It is caused due to root pressure
C. Normally it occurs in the day
D. Exudation of water with salt and minerals through hydathode

• A. A, B and D only
• B. A and D only
• C. A, B, C and D
• D. B and D only

Hint:

Remember: Guttation happens due to root pressure at night or early morning, not to be confused with transpiration.

Answer 1

The Correct Option is A

Step 1: Define guttation.
Guttation is the exudation of liquid water from the tips or margins of leaves, especially during night or early morning, when transpiration is low but root pressure is high.
Step 2: Examine each statement.
- A: The term guttation was given by Stephan Hales → Correct.
- B: Caused due to root pressure, pushing water out through hydathodes → Correct.
- C: Occurs in the day → Wrong, as it occurs at night or early morning, not usually in the day.
- D: Exudation of water with dissolved salts and minerals through hydathodes → Correct.
Step 3: Conclusion.
Correct statements are A, B and D only.