Understanding Photosynthesis: The Process Explained

English
Grade 7
11 questions
~22 mins
1 views0 downloads

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A worksheet exploring scientific explanation through reading comprehension, focusing on the process of photosynthesis.

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Understanding Photosynthesis: The Process Explained

Subject: EnglishGrade: Grade 7
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Grade Grade 7
A

Reading Passage: Photosynthesis

Photosynthesis is a vital process that sustains life on Earth. It occurs primarily in green plants, algae, and some bacteria, allowing them to convert light energy from the sun into chemical energy stored in glucose molecules. This process takes place mainly in the chloroplasts within plant cells, which contain the pigment chlorophyll. During photosynthesis, carbon dioxide from the atmosphere and water from the soil are absorbed by the plant. Through a series of complex reactions, these raw materials are transformed into glucose and oxygen. The overall chemical equation can be summarized as: 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂. This process is crucial for maintaining atmospheric oxygen levels and providing the foundation for the food chain. Scientists have studied photosynthesis extensively to understand how it influences ecological balance and climate change. The efficiency of this process depends on various factors such as light intensity, carbon dioxide concentration, and temperature.
1.
What is the primary function of photosynthesis?
[2 marks]
2.
Name the two raw materials used by plants in photosynthesis.
[2 marks]
3.
In which part of the plant cell does photosynthesis mainly occur?
[2 marks]
4.
What does the chemical equation 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂ represent?
[3 marks]
5.
Explain why photosynthesis is considered essential for life on Earth.
[4 marks]
6.
Identify the scientific term used to describe the green pigment involved in photosynthesis.
[1 mark]
7.
List two environmental factors that influence the rate of photosynthesis.
[2 marks]
8.
Describe the importance of oxygen produced during photosynthesis.
[3 marks]
9.
Analyze how understanding photosynthesis can help address climate change.
[4 marks]
10.
Write a short paragraph explaining the role of chlorophyll in photosynthesis.
[4 marks]
11.
Create a visual diagram that summarizes the process of photosynthesis. Include labels for raw materials, products, and key structures.
0

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Details

Created
1/1/2026
Updated
1/1/2026
Type
worksheet