leaves

Question 1

name 4 adaptations of leaves

Answer 1

-are green (contain chlorophyll)
-thin (easy gas exchange)
-large surface area (absorb loads of light)
-have veins (helps transporting water around the leaf

Question 2

why is the underside of the leaf lighter than the top

Answer 2

the bottom contains fewer chloroplasts. sunlight hits the top of the leaf, so more chloroplasts are needed

Question 3

why is the surface of leaves covered in a waxy layer

Answer 3

to stop water from evaporating out

Question 4

how do gasses enter and leave a leaf

Answer 4

through the stomata (tiny holes on the underside of the leaf) they are opened and closed by guard cells.

Question 5

what enters and leaves the leaf

Answer 5

carbon dioxide diffuses in (is a reactant of photosynthesis)

oxygen diffuses out (is a product of photosynthesis)

Question 6

how does water get into a plant

Answer 6

water diffuses into the root hair cells and gets transported around the plant, until it diffuses out from the leaves