structure of the leaf

Question 1

What is the primary function of a leaf

Answer 1

Photosynthesis

Question 2

What is the waxy cuticle

Answer 2

A protective, waterproof layer on the surface of the leaf

Question 3

What is the upper epidermis

Answer 3

A transparent layer of cells that allows light to pass through to the palisade mesophyll and provides protection

Question 4

What is the palisade mesophyll

Answer 4

A layer of closely packed cells that contain many chloroplasts, where most photosynthesis occurs

Question 5

What is the spongy mesophyll

Answer 5

A layer of loosely arranged cells with air spaces that allow carbon dioxide and oxygen to diffuse in and out

Question 6

What are stomata

Answer 6

Small openings on the leaf surface (mostly on the lower epidermis) that allow gas exchange

Question 7

What controls the opening and closing of stomata

Answer 7

Guard cells – they swell to open the stomata and shrink to close them, regulating gas exchange and water loss

Question 8

What is the role of xylem in the leaf

Answer 8

To transport water and minerals from the roots to the leaf for photosynthesis

Question 9

What is the role of phloem in the leaf

Answer 9

To transport glucose and other nutrients made in the leaf to other parts of the plant.

Question 10

What is chlorophyll and where is it found

Answer 10

A green pigment found in chloroplasts that absorbs light energy for photosynthesis