Structure of a Leaf

Question 1

What is the function of the cuticle in leaves?

Answer 1

A waxy layer that reduces evaporation from leaf surfaces

The cuticle plays a crucial role in maintaining moisture within the leaf.

Question 2

What is the epidermis?

Answer 2

A thin layer of cells that are transparent to allow light to reach photosynthesising cells

The epidermis serves as a protective barrier while enabling photosynthesis.

Question 3

What is the palisade mesophyll layer?

Answer 3

A layer of palisade cells at the top of the leaf that contains many chloroplasts; these features maximise light absorption

This layer is essential for efficient photosynthesis due to its chloroplast density.

Question 4

What is the function of the spongy layer in leaves?

Answer 4

Air spaces between cells allow the movement of gases

The spongy layer facilitates gas exchange necessary for photosynthesis and respiration.

Question 5

What is the role of xylem in plants?

Answer 5

Transports water from the roots to the leaves

Xylem is vital for supplying water needed for photosynthesis.

Question 6

What does phloem transport?

Answer 6

Transports the products of photosynthesis to the rest of the plant

Phloem distributes sugars and nutrients throughout the plant.

Question 7

What are stomata?

Answer 7

Allow gases to move in and out of the leaf

Stomata are critical for gas exchange, including oxygen and carbon dioxide.

Question 8

What is the function of guard cells?

Answer 8

Can close to prevent excessive water loss in dry conditions

Guard cells regulate transpiration and maintain water balance in the plant.