Leaf Cross Section

Question 1

What is the palisade mesophyll?

Answer 1

This is where photosynthesis occurs.

Question 2

What is the cuticle?

Answer 2

Waxy layer at the top of the leaf

Question 3

What is the role of the upper and lower epidermis?

Answer 3

These cover the plant.

Question 4

What is the spongy mesophyll?

Answer 4

This is a space for gas exchange.

Question 5

What is the role of the guard cell and stomata?

Answer 5

This is where transpiration takes place.

Question 6

What is the role of the xylem?

Answer 6

The xylem transfers water from the roots up to the leaves.

Question 7

What is the role of the phloem?

Answer 7

The phloem carries ions and food from the leaf to the roots where it can be stored.

Question 8

What factors affect transpiration? (4)

Answer 8

1) light - bright light leads to more transpiration.

2) temperature - high temperature leads to more transpiration.

3) wind - high wind leads to more transpiration.

4) humidity - high humidity leads to lower transpiration.