2024 Anatomy of Flowering PlantsXylem Vessel/Tracheid Wall Thickenings Medium Question 7 of 86 in Anatomy of Flowering Plants

In the given figure, which component has thin outer walls and highly thickened inner walls

In the given figure, which component has thin outer walls and highly thickened inner walls

A A
B B
C C
D D

The answer is C.

Solution

Component C is the guard cell. Guard cells are bean-shaped; their outer walls (away from the stomatal pore) are thin and elastic, while their inner walls (towards the pore) are highly thickened. This wall structure helps in the opening and closing of the stomatal pore.

Concept Identifying vessel element wall thickening pattern in a diagram

Anatomy of Flowering Plants in past papers

86 questions from this chapter have appeared across 26 exam years.