Self-feeding: They take simple substances from their environment and use light energy to build them up into complex food compunds
1 of 7
Waxy Cuticle
The top layer of the leaf, it reduces water loss
2 of 7
Upper Epidermis
It is transparent to allow the free passage of light, and has the major function of preventing disease-causing organisms to enter(e.g. bacteria and fungi)
3 of 7
Palisade Mesophyll
Tall thin cells that are separated by very narrow air spaces. Cells contain many chloroplasts and the dense packing of these cells allows the absorption of the maximum amount of light energy. Best site for photosynthesis to take place.
4 of 7
Vein
Xylem Vessels: Deliver water and mineral salts. Phloem: Carry away the organic products of photosynthesis, such as glucose
5 of 7
Spongy Mesophyll
Loosely-packed cells and are covered with thin layers of water. Air spaces between them aid the diffusion of gases through the leaf. Air spaces are also saturated with water vapour so water diffuses out of the leaf
6 of 7
Lower Epidermis (Stomata)
Minute pores that allow the entry of Carbon Dioxide and the exit of Oxygen. The surface is less exposed to the sun's radiation so that evaporation is kept to a minimum
7 of 7
Other cards in this set
Card 2
Front
The top layer of the leaf, it reduces water loss
Back
Waxy Cuticle
Card 3
Front
It is transparent to allow the free passage of light, and has the major function of preventing disease-causing organisms to enter(e.g. bacteria and fungi)
Back
Card 4
Front
Tall thin cells that are separated by very narrow air spaces. Cells contain many chloroplasts and the dense packing of these cells allows the absorption of the maximum amount of light energy. Best site for photosynthesis to take place.
Back
Card 5
Front
Xylem Vessels: Deliver water and mineral salts. Phloem: Carry away the organic products of photosynthesis, such as glucose
Comments
No comments have yet been made