Leaves And Photosynthesis Flashcards Preview

Biology module 4 > Leaves And Photosynthesis > Flashcards

Flashcards in Leaves And Photosynthesis Deck (8):
1

What do chlorophyll pigments in chloroplasts do?

Absorb light energy for photosynthesis

2

Recall the entry points of materials required for photosynthesis

- water through root hairs
- carbon dioxide through stomata

3

Recall the exit point of materials produced in photosynthesis

- oxygen through stomata

4

What type of leaves enable more sunlight to be absorbed?

Broad and flat leaves

5

Explain how leaves are adapted for efficient photosynthesis

- broad so large surface area
- thin so short distance for gases to diffuse
- contain chlorophyll and other pigments to absorb light from different parts of the spectrum
- have a network of vascular bundles for support and transport
- guard cells which open and close the stomata

6

Explain how cellular structure of a leaf is adapted for efficient photosynthesis

- epidermis is transparent
- palisade layer at the top containing most of the chloroplasts
- air spaces in the spongy mesophyll allow diffusion between stomata and photosynthesising cells
- internal surface area to volume ration very large

7

Names parts of a leaf

- cuticle
- upper and lower epidermis
- palisade and spongy mesophyll layers
- stomata and guard cells
- vascular bundles

8

Understand why chloroplasts are not found in all plant cells

E.g. Roots don't possess any as they do not have access to light