Plant Tissues

What are the main structures of a leaf?

• Upper + lower epidermal tissues

• Palisade mesophyll

• Spongy mesophyll

• Xylem + phloem

• Guard cells + stomata

Which way does water move in a leaf?

The water will go out of the stoma

Which was does the oxygen move in the leaf?

Oxygen moves from the palisade cells out from the stoma

Which was does the carbon dioxide move in the leaf

Carbon dioxide moves in from the stoma into the chloroplasts.

How is the spongy mesophyll adapted to increase rate of diffusion?

Large air spaces between cells allow gases to diffuse faster and easier.

Why do water molecules move through the stomata?

A high concentration of water vapour in the leaf to the low concentration outside of the leaf therefore water vapour diffuses out.