Question

To observe stomata under microscope Swati took the leaf peel from Tradescantia leaf from lower surface of leaf

• A. She should take from upper surface
• B. She should take from tip of leaf
• C. She should not take from leaf surface
• D. She had taken correct surface for leaf peel.

Answer 1

The correct option is D

She had taken correct surface for leaf peel.

The correct option is D.

Explanation for the correct option

• Tradescantia is a genus of the family Commelinaceae that comprises many species of plants found majorly in America.
• Plants belonging to this genus have three petalled flowers.
• Stomata is a small apparatus located in the epidermis of the leaf for the exchange of gases and the loss of water from the plant.
• A high number of stomata is located on the lower surface of the leaf.
• Thus, one should peel the leaf from its lower surface to observe the stomata.

Explanation for the incorrect options

Option A

• The upper surface of the leaf has settled dust. Thus, leaves have fewer stomata on the upper surface to prevent them from being clogged.

Option B

• The tip of the leaf comprises hydathodes and no stomata for the water loss.
• Hydathodes are small pores that allow water loss in the form of droplets.

Option C

• Stomata are only found in the leaves; thus, a leaf is mandatory for the experiment.

Final answer: The performer has taken the correct part of the leaf to examine the stomata.