Photosynthesis Worksheet - Free Printable

This worksheet is about photosynthesis, the process by which plants make their own food using sunlight. The diagram shows a sunflower plant with arrows pointing to different parts, and blank boxes where you need to label the inputs and outputs of photosynthesis.

Let’s go step-by-step to solve this:

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🔹 What is Photosynthesis?

Photosynthesis is the process in which green plants use sunlight, carbon dioxide (CO₂), and water (H₂O) to produce glucose (a type of sugar for energy) and oxygen (O₂). This process occurs mainly in the leaves of the plant, in structures called chloroplasts.

The general equation for photosynthesis is:
> Sunlight + Carbon Dioxide + Water → Glucose + Oxygen

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🔹 Labeling the Diagram

Here are the correct labels for each box based on the arrows:

1. Arrow from the Sun → Plant (top left):
➤ Sunlight
*(Energy source for photosynthesis)*

2. Arrow from the air → Plant (right side):
➤ Carbon Dioxide (CO₂)
*(Taken in through tiny openings in leaves called stomata)*

3. Arrow from soil → Plant (bottom left):
➤ Water (H₂O)
*(Absorbed by roots from the soil)*

4. Arrow from plant → air (bottom right):
➤ Oxygen (O₂)
*(A waste product released into the air)*

5. Arrow from plant → soil (bottom right):
➤ Glucose (or Food)
*(The food produced by the plant; used for growth and energy)*

6. Bottom box under roots:
➤ Minerals / Nutrients
*(Plants also absorb minerals from the soil through roots, though not directly part of the main photosynthesis equation)*

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✔ Final Answer Summary:

- Top left box (sun → plant): Sunlight
- Right side box (air → plant): Carbon Dioxide
- Left side box (soil → plant): Water
- Right side box (plant → air): Oxygen
- Bottom right box (plant → soil): Glucose (Food)
- Bottom box under roots: Minerals/Nutrients

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📝 Fill in the Definition Box at the Top:

> PHOTOSYNTHESIS
> *The process by which green plants use sunlight, carbon dioxide, and water to make their own food (glucose) and release oxygen as a byproduct.*

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✔ This completes the worksheet! The plant uses sunlight, CO₂, and H₂O to create food and oxygen — a vital process for life on Earth.