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B2.2 How Plants Produce Food

2.1 Photosynthesis
The equation for photosynthesis is:

Carbon Dioxide + Water (+ Light energy) Glucose + Oxygen
6 CO2 + 6 H2O C6H12O6 + 6 O2

The carbon dioxide is taken in by the leaves and the water by the roots.

The chlorophyll traps the…

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B2.2 How Plants Produce Food

2.2 Limiting Factors
A lack of light would slow down the rate of photosynthesis as light provides the energy needed
for the process. Chlorophyll traps the light. Even on sunny days, light may be limited on the floor
of a wood or a forest.


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B2.2 How Plants Produce Food

2.3 How plants use Glucose
The product of photosynthesis is glucose. Glucose is used for respiration.

Glucose is also combined with other nutrients by the plant to produce new materials.

Glucose is stored, by some plants, as insoluble starch. It is stored as an insoluble…

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B2.2 How Plants Produce Food

2.4 Why do plants need minerals?
Plant roots take up mineral salts for healthy growth.

Nitrates are taken up from the soil for producing amino acids. These used to make proteins for
growth. A plant that does not take up enough nitrate (is nitrate deficient)…


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