Question

Bulliform cells in grass leaves show

• A. Growth movements
• B. Tropic movements
• C. Nastic movements
• D. Turgor movements

Answer 1

Answer: (D)

Turgor movements

A. Growth movement in plants is the growth in the direction of stimulus.

B. Tropic movements are a kind of curvature movements in which the growth of plants is related to the direction of stimulus.

C. Nastic movements occur due to stimulus of light, temperature or contact and the direction of the response is determined by the responsive organ.

D. Turgor movements occur due to change in turgor pressure.

Bulliform cells are the large epidermal cells present on the upper surface or adaxial surface of leaves. These cells help in the rolling of grasses due to change in turgor pressure.

So, the correct answer is 'Turgor movements'.