Question

Which among the following is incorrect about Stomata?

(a) The closing and opening of stomata is due to diffusion

(b) The factors affecting stomatal movement are light, CO2, O2, availability of water, potassium levels and temperature

(c) Some plants like grass have dumb-belled shaped guard cells

(d) The cells that are just beside the guard cells are called subsidiary cells

I had been asked this question in semester exam.

My question comes from Flowering Plants Anatomy topic in division Anatomy of Flowering Plants of Biology – Class 11

Answer 1

The correct option is (a) The closing and opening of stomata is due to diffusion

Explanation: The closing and opening of stomata is due to osmosis. The factors affecting stomatal movement are light, CO2, O2, availability of water, potassium levels and temperature. Some plants like grass have dumb-belled shaped guard cells. Some plants like grass have dumb-belled shaped guard cells. The cells that are just beside the guard cells are called subsidiary cells.