UNIT V: Plant Physiology - Online Test

Q1. The water potential of pure water is
Answer : Option D
Explaination / Solution:
No Explaination.


Q2. Transpiration and root pressure cause water to rise in plants by
Answer : Option B
Explaination / Solution:
No Explaination.


Q3. Movement of ions or molecules in a direction opposite to that of prevailing electro-chemical gradient is known as
Answer : Option A
Explaination / Solution:
No Explaination.


Q4. Correct sequence of events in wilting?
Answer : Option B
Explaination / Solution:
No Explaination.


Q5. What will be the direction of net osmotic movement of water if a solution 'A', enclosed in a semi permeable membrane, having an osmotic potential of'- 30' bars and turgor pressure of '5' bars is submerged in a solution 'B' with an osmotic potential of '- 10' bars and '0' turgor pressure ?
Answer : Option B
Explaination / Solution:
No Explaination.


Q6. The pressure exerted by a swollen vacuole on the cell wall is
Answer : Option C
Explaination / Solution:
No Explaination.


Q7. Who said that ‘transpiration is a necessary evil’?
Answer : Option A
Explaination / Solution:
No Explaination.


Q8. Which one gives the most valid and recent explanation for stomatal movements?
Answer : Option B
Explaination / Solution:
No Explaination.


Q9. Carrier proteins are involved in
Answer : Option A
Explaination / Solution:
No Explaination.


Q10. Active transport of ions in the cell requires
Answer : Option B
Explaination / Solution:
No Explaination.