dermal tissue🫧

Question 1

What is the epidermis?

Answer 1

Outermost single layer of living cells; protects, prevents water loss, allows gas exchange.

Question 2

What is the function of the cuticle?

Answer 2

A waxy layer on the epidermis that reduces water loss.

Question 3

What are stomata and how do they work?

Answer 3

Pores flanked by guard cells that open/close depending on guard-cell turgor.

Question 4

What is periderm and where is it found?

Answer 4

Bark (cork cambium, cork, phelloderm) replacing epidermis in woody plants.

Question 5

What are trichomes?

Answer 5

Leaf hairs that reduce transpiration by trapping water above stomata.

Question 6

What are root hairs?

Answer 6

Extensions of epidermal cells that increase surface area for absorption.