NEET Solved Paper 2017 Question 74

Question: Which of the following facilitates opening of stomatal aperture?

Options:

A) Longitudinal orientation of cellulose micro fibrils in the cell wall of guard cells

B) Contraction of outer wall of guard cells

C) Decrease in turgidity of guard cells

D) Radial orientation of cellulose micro fibrils in the cell wall of guard cells

Show Answer

Answer:

Correct Answer: D

Solution:

  • Cellulose micro fibrils are oriented radially rather than longitudinally which makes easy for the stoma to open.