2.20 Factors affecting the rate of photosynthesis Flashcards

1
Q

What are the 4 limiting factors of photosynthesis?

A

-Temperature
-Light intensity
-Carbon dioxide concentration
-Amount of chloroplasts

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2
Q

Why is the temperature a limiting factor of photosynthesis?

A

-Temperature affects movement, therfore affecting the speed of carbon dioxide and water moves through the plant
-Lower temperatures will lead to less reactions between enzymes and substrates
-Too high or too low temperatures will lead to denaturing

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3
Q

Why is the light intensity a limiting factor of photosynthesis?

A

-The light intensity determines how much photosynthesis will occur
-The rate of photosynthesis will level off at one point

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4
Q

Why is the carbon dioxide concentration a limiting factor of photosynthesis?

A

-As carbon dioxide is one of the raw materials needed for photosynthesis, the more carbon dioxide, the more photosynthesis will occur
- The rate of photosynthesis will level off at one point

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5
Q

Why is the amount of chloroplasts a limiting factor of photosynthesis?

A

-Chloroplasts contain chlorophyll, which is the site of photosynthesis
-The more chloroplasts leads to more photosynthesis
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6
Q

What can affect the amount of chloroplasts in a plant?

A

-Diseases
-Lack of nutrients
-Loss of leaves

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