Leaf Structure and Adaptations

Question 1

Wax Cuticle

Answer 1

Protective layer on the top of the leaf, prevents water from evaporating

Question 2

Upper Epidermis

Answer 2

Thin and transparent to allow light to enter to the Palisade Mesophyll underneath it

Question 3

Palisade Mesophyll

Answer 3

Column shaped cells tightly packed with chloroplasts, absorbing more light and maximising photosynthesis

Question 4

Spongy Mesophyll

Answer 4

Contains internal air spaces that increase surface area. Better for difusion of gases (Mainly carbon dioxide)

Question 5

Lower Epidermis

Answer 5

Contains guard cells and stomata

Question 6

Guard Cell

Answer 6

-Absorbs and loses water to open the stomata
-Allowing C02 to diffuse in
-O2 to diffuse out

Question 7

Stomata

Answer 7

-Where gas exchange takes place
-Also evaporation of water

Question 8

Vascular Bundle

Answer 8

Contains Xylem and Phloem. to transport substances to and from the leaf

Question 9

Xylem

Answer 9

Transports Water to the leaf for mesophyll cells to use in photosynthesis

Question 10

Phloem

Answer 10

Transports amino acids and sucrose around the cell