Gas Exchange in Plants Flashcards
1
Q
Stoma
A
Allow gas exchange between inside and outside of lead
2
Q
Guard cells
A
Can change their shape to open or close stomata
3
Q
What is the colour of hydrogen carbonate indication in high concentrations of carbon dioxide >0.4%?
A
Yellow
4
Q
What is the colour of hydrogen carbonate indication in normal concentrations of carbon dioxide =0.4%?
A
Orange
5
Q
What is the colour of hydrogen carbonate indication in low concentrations of carbon dioxide <0.4%?
A
Purple
6
Q
Describe an experiment to measure the effects of limiting factors upon the rate of photosynthesis
A
- Place 10cm cubed of hydrogen carbonate indicator solution into a test tube
- Place a leaf in each tube then each tube, bunged, in different conditions (no leaf in control)
- Leave for a few hours then observe indicator colour