KCET · BIOLOGY · STD 11 - 6. Anatomy of Flowering Plants
A student observe grass and Hibiscus plants in his garden during noon. To his surprise, only the leaves of grass were found rolled inwards. The reason could be
- A due to higher rate of transpiration
- B presence of more number of stomata on the grass leaves
- C undifferentiated mesophyll in grass leaves.
- D presence of bulliform cells in the grass leaves.
Answer & Solution
Correct Answer
(D) presence of bulliform cells in the grass leaves.
Step-by-step Solution
Detailed explanation
(D) presence of bulliform cells in the grass leaves.,
In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These are called bulliform cells. When the bulliform cells in the leaves have absorbed water and are turgid, the leaf surface is exposed. When they are flaccid due to water stress, they make the leaves curl inwards to minimise water loss.
In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These are called bulliform cells. When the bulliform cells in the leaves have absorbed water and are turgid, the leaf surface is exposed. When they are flaccid due to water stress, they make the leaves curl inwards to minimise water loss.
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