Gas Exchange in Plants

Question 1

Describe the structure of the leaf and the functions of the tissues in the leaf

Answer 1

At the top of the leaf the waxy cuticle enables the leaf to be waterproof, the palaside mesophyll which contains many chloroplast so photosynthesis occurs, a spongy mesophyll which is a layer of cells with air spaces between them therefore gas exchange can occur, xylem which transports water and miner ions, phloem which transports dissolved sugars

Question 2

what is the function of the stomata?

Answer 2

The stomata can control how much water leaves.

Question 3

what is transpiration?

Answer 3

Is the loss of water from the plant via evaporation

Question 4

when do guard cells become turgid?

Answer 4

when plants have enough water they are turgid which keep the pores open

Question 5

when does guard cells become flaccid?

Answer 5

When plants are dehydrated they become flaccid causing the hole to close.