The leaf and photosynthesis

Question 1

Leaves are broad and flat

Answer 1

giving a large surface area to absorb as much light as possible

Question 2

Leaves are thin

Answer 2

providing a short diffusion pathway for carbon dioxide to diffuse to the mesophyll and palisade layer

Question 3

Leaf cells contain chlorophyll

Answer 3

which absorb energy from different parts of the spectrum

Question 4

Palisade layer are tightly packed

Answer 4

fit more cells in

Question 5

Veins contain vascular bundles

Answer 5

these form a network of veins that support the leaf blade. they also carry water from the root to the leaf and carry soluble sugars away.

Question 6

Plenty stomata pores in lower epidermis

Answer 6

which allow carbon dioxide in and oxygen out. guard cells control whether the are open or closed

Question 7

Palisade layer contains most chloroplasts

Answer 7

receives the most light

Question 8

Air spaces in spongy mesophyll layer

Answer 8

to allow carbon dioxide to diffuse from the stomata to the palisade cells

Question 9

Air spaces give larger surface area to volume ratio

Answer 9

allows maximum absorption of gases

Question 10

Colour of epidermis

Answer 10

transparent