Leaf adaptations
- Created by: Lottie Hodson
- Created on: 25-04-13 21:39
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- LEAF ADAPTATIONS
- Leaves contain CHLOROPHYLL in the chloroplasts
- Allows efficient absorption of CO and removal of O by the photosynthesising cells
- The leaf has many stomata on the lower surface
- These allow the movement of gases into and out of the leaf
- Leaf is thin
- As much light as possible can be absorbed
- Vascular bundles contain XYLEM vessels
- To carry water from the roots to the leaves
- The spongy MESOPHYLL contain air spaces
- Allows movement of O and CO through the leaf, to and from cells
- Leaf is broad
- To absorb light energy
- The leaf has a large surface area to volume ratio
- Easy for CO to diffuse to reach thee cells in the centre of the leaf
- The epidermis is transparent
- To allow the light to travel to cells inside the leaf
- Each leave has a stalk
- To hold leave at the right angle so it can absorb as much light as possible
- The palisade cells are tightly packed together in the upper half of the leaf
- In a good position to absorb sunlight. Most of the photosynthesis takes place in this layer
- Vascular bundles contain PHLOEM vessels
- To carry sugars from the leaves to all parts of the plant
- Leaves have veins
- To carry water from the roots tot he leaves and to carry food to other parts of the plant
- Leaves contain CHLOROPHYLL in the chloroplasts
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