Life Processes in Plants
CBSE · Class 7 · Science
Complete topic list for Life Processes in Plants in CBSE Class 7 Science. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Life Processes in Plants
1. Growth of Plants
- Plants need both sunlight and water for growth.
- A plant kept in direct sunlight with adequate water grows better than a plant kept in the dark with water.
- A plant kept in sunlight but without water may die.
2. Leaves and Starch Formation
- Leaves are generally broad and flat and mostly green because of chlorophyll.
- Leaves are called the food factories of plants.
- Plants store food in the form of starch, which is a carbohydrate.
3. Role of Sunlight, Carbon Dioxide, Water, and Chlorophyll
- Sunlight, water, carbon dioxide, and chlorophyll are all necessary for photosynthesis.
- A destarched plant is kept in the dark for two to three days before testing the role of carbon dioxide.
- Caustic soda absorbs carbon dioxide from the air inside the bottle.
4. Gas Exchange in Leaves
- Stomata are tiny pores on the surface of leaves.
- Stomata help in the exchange of gases.
- The lower surface of a leaf is used to observe stomata in the activity.
Key Concepts
Central concept: Life processes in plants: how plants make food, move materials, exchange gases, and release energy
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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