structure of a leaf Flashcards
1
Q
why are leaves on a plant broad?
A
to absorb as much light as possible
2
Q
where are most chloroplasts located
A
palisade mesophyll
3
Q
what do vascular bundles consist of?
A
xylem & phloem
4
Q
why are chloroplasts located in the palisade mesophyll layer?
A
to absorb as much light as possible
5
Q
what is the function of the waxy cuticle?
A
reduce water loss by evaporation
6
Q
why are there spaces in the spongy mesophyll?
A
to let oxygen and co2 travel between cells
7
Q
describe upper epidermis
A
transparent, lets light pass to palisade layer
8
Q
what is the function of the stomata
A
to let water & gases in and out of leaf
9
Q
what is the stomata controlled by?
A
guard cells
10
Q
why does stomata close at night?
A
to reduce water loss
