When the conditions are dry, a grass leaf curls inward to minimize water loss due to presence of
Thick cuticle
Large xylem cavities
Parallel venation
Bulliform cells
Additional Questions
|
Guard cells help in |
Answer | |||||||||||||||
|
Which one of the following denotes the water potential of the mesophyll cell in wilted condition? |
Answer | |||||||||||||||
|
Identify the correct relationship with reference to water potential of a plant cell. |
Answer | |||||||||||||||
|
The values osmotic potential π and pressure potential ρ of cells A, B, C and D are given below:
Identify the correct sequence that shows the path of movement of water from among the following: |
Answer | |||||||||||||||
|
Steroid hormones easily pass through the plasma membrane by simple diffusion because they |
Answer | |||||||||||||||
|
Assertion (A): K+ ion accumulation found in Nitella depends on its respiratory activity. Reason (R): Absorption of all ions in plants completely depends on the usage of metabolic energy. The correct answer is |
Answer | |||||||||||||||
|
Guttation is the result of |
Answer | |||||||||||||||
|
Humidity in atmosphere decreases rate of |
Answer | |||||||||||||||
|
Living cells placed in isotonic solution (0.9% saline) retain their size and shape. This is based on the concept of |
Answer | |||||||||||||||
|
Hydathodes are also called |
Answer |