Unit 4 Leaves

Question 1

waxy layer

Answer 1

reduces water loss and evaporation

Question 2

stomata

Answer 2

on lower surface to reduce water loss by evaporation

Question 3

chloroplasts

Answer 3

mainly located on the upper side, where most of the sunlight reaches

Question 4

spongy layer

Answer 4

contains air spaces, allowing carbon dioxide to diffuse throughout the leave and oxygen to diffuse out

Question 5

guard cells

Answer 5

open the stomata through the day and close it at the night

Question 6

palisade layer

Answer 6

contains cells packed with chloroplasts and this is where most of the plants photosynthesis occurs

Question 7

big question! Leaves are specially adapted to photosynthesis by

Answer 7

-having lots of chlorophyll- absorbs sunlight for photosynthesis

-are think- allows gases to diffuse in or out of the leaves

-have a large suface area-absorb as much sunlight as possible

-have veins -xylem and phloem transport water and glucose