leaf structures

Question 1

upper epidermis

Answer 1

very thin and transparent in order to let light in to the palisade mesophyll

Question 2

lower epidermis

Answer 2

contains guard cells and stomata (gaps)

Question 3

stomata

Answer 3

where gas exchange and loss of water by evaporation takes place - opens during day and closes at night

Question 4

palisade mesophyll

Answer 4

contains lots of chloroplasts so that photosynthesis can happen rapidly

Question 5

spongy mesophyll

Answer 5

have lots of air spaces to allow gases to diffuse in/out of cells faster, as it increases area to volume ratio

Question 6

waxy cuticle

Answer 6

helps to reduce water loss by evaporation and is a protective layer found at top of leaf

Question 7

guard cell

Answer 7

kidney shaped cells that open and close the stomata by absorbing or losing water
when lots of water avaliable the cells fill and open stomata

Question 8

photosynthesis equation (word)

Answer 8

carbon dioxide + water → (light) glucose + oxygen

Question 9

photosynthesis equation (chemical)

Answer 9

6CO2 + 6H2O → C6H12O6 + 6O2