Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
Epidermis |
Covers the whole plant allowing light to penetrate through |
|
Xylem |
Carries water and minerals from the roots around the plant |
|
Phloem |
Carries dissolved sugars through the plant |
|
Palisade mesophyll |
Where photosynthesis takes place Likely to contain chloroplasts to absorb light |
|
Spongey mesophyll |
Some photosynthesis. Has air spaces for diffusion of CO2 and O2 |
|
Guard cells |
Cells that can open and close the stomata |
|
Stomata |
Opening that allows O2 and CO2 to diffuse in and out of leaf |
|
Transpiration |
Loss of water vapour from the leaves by evaporation from cells and out from the stomata |
|
Transpiration stream |
Movement of water from the roots, up the steam and to the leaves |
|
Translocation |
Movement of sugars within the plant |
|
Factors affecting transpiration |
Temperature- increase in temperature means increase in transpiration rate Humidity- increase in humidity decreases rate of transpiration as if the air is dryer the concentration gradient is greater Wind speed- higher winds means faster diffusion Light- more light means faster diffusion as it will open the stomata |