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Life Processes in Plants

CBSE · Class 7 · Science

Quick revision notes for Life Processes in Plants — CBSE Class 7 Science. Key concepts, formulas, and definitions for last-minute revision.

43 questions70 flashcards5 concepts

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Key Topics to Revise

1

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

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

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

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.

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Full Notes

Key Concepts

Plants grow better when they getLeaves are generally broadPhotosynthesis is the process byCarbon dioxide from the airA leaf is first decolourised

Frequently Asked Questions

What are the important topics in Life Processes in Plants for CBSE Class 7 Science?
Life Processes in Plants covers several key topics that are frequently asked in CBSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Life Processes in Plants — CBSE Class 7 Science?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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