Photosynthesis Flashcards

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1
Q

How can you measure the rate of photosynthesis?

A

Measure the amount of oxygen being given off.

> use Canadian pond weed in a flask with a gas syringe to measure the oxygen given off

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2
Q

How do you control the light intensity of a photosynthesis experiment?

A

You can change the distance of the beaker from the lamp

> you must use a light meter to plot a reproducible and accurate graph

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3
Q

What does the flattening out of a graph indicate?

A

That the measured factor is no longer the limiting factor

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4
Q

How can you control the amount of CO2 in a photosynthesis experiment?

A

> control the amount of sodium hydrocarbonate in the water

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5
Q

How do you control the temperature in a photosynthesis experiment?

A

> place the test tubes in a water bath and change the temperature each time

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6
Q

What are the three limiting factors of photosynthesis?

A

> CO2

> light

> temperature

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