plant tissue structure

Question 1

what are the layers of cells found within a leaf?

Answer 1

waxy cuticle, upper epidermis, palisade layer, spongey mesophyll, lower epidermis + guard cells, waxy cuticle

Question 2

what is the purpose of the waxy cuticle?

Answer 2

it is waterproof to prevent excess loss of water

Question 3

how is the upper epidermis adapted for photosynthesis?

Answer 3

upper epidermis cells don’t have nucleii to allow sunlight to pass through

Question 4

what is the purpose of the palisade layer?

Answer 4

palisade cells are packed with chloropasts to carry out photosynthesis and store starch

Question 5

what is the spongey mesophyll?

Answer 5

mostly air spaces to allow for gas exchange within the leaf, also where vascular bundles are

Question 6

what are guard cells?

Answer 6

cells which form closeable pores known as stomata, mostly on the bottom of the leaf

Question 7

how do gases move through the leaf?

Answer 7

mostly via diffusion through the spaces in the spongey mesophyll and can be lost and gained through the stomata