Gas Exchange in Plants Flashcards

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1
Q

Stoma

A

Allow gas exchange between inside and outside of lead

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2
Q

Guard cells

A

Can change their shape to open or close stomata

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3
Q

What is the colour of hydrogen carbonate indication in high concentrations of carbon dioxide >0.4%?

A

Yellow

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4
Q

What is the colour of hydrogen carbonate indication in normal concentrations of carbon dioxide =0.4%?

A

Orange

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5
Q

What is the colour of hydrogen carbonate indication in low concentrations of carbon dioxide <0.4%?

A

Purple

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6
Q

Describe an experiment to measure the effects of limiting factors upon the rate of photosynthesis

A
  1. Place 10cm cubed of hydrogen carbonate indicator solution into a test tube
  2. Place a leaf in each tube then each tube, bunged, in different conditions (no leaf in control)
  3. Leave for a few hours then observe indicator colour
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