Revision Notes for Class 7 Science Chapter 10: Life Processes in Plants

Quick revision notes summarizing all key concepts from Class 7 Science Chapter 10 “Life Processes in Plants”. These Class 7 Science Chapter 10 notes are ideal for quick revision just before exams.

Last Updated: September 23, 2026

• Photosynthesis is the process by which green plants make food (glucose) using sunlight, carbon dioxide, and water; it occurs in chlorophyll-containing (green) parts of the plant, mainly leaves.
• Word equation: Carbon dioxide + Water –(sunlight + chlorophyll)–> Glucose + Oxygen.
• Glucose made during photosynthesis is stored as starch; the iodine test (blue-black colour) confirms the presence of starch in a leaf or organ like a potato.
• Broad, flat leaves increase surface area for sunlight absorption and gas exchange, making photosynthesis more efficient.
• Stomata are tiny pores (mainly on the lower leaf surface) that allow exchange of gases (CO2 in, O2 and water vapour out).
• Xylem is the tissue that transports water and minerals from roots to the rest of the plant; demonstrated using coloured-water experiments.
• Respiration in plants: Glucose + Oxygen → Carbon dioxide + Water + Energy. Occurs in all living cells, all the time (unlike photosynthesis, which needs light).
• Lime water turns milky in the presence of carbon dioxide — used to demonstrate that germinating seeds/plants respire and release CO2.
• Photosynthesis and respiration work in balance to maintain stable oxygen and carbon dioxide levels in the atmosphere, sustaining life on Earth.

See also: NCERT Solutions for Class 7 Science Chapter 10

Practice more: Extra Questions for Class 7 Science Chapter 10

For the full chapter, see the Class 7 Science book page and the Class 7 Science Formulas Handbook.

Frequently Asked Questions

How do plants carry out nutrition differently from animals?
Plants carry out nutrition through photosynthesis, using sunlight, water, and carbon dioxide to prepare their own food inside chlorophyll-containing cells, unlike animals which must consume other organisms to obtain food.

What is the role of transpiration in the life processes of a plant?
Transpiration is the process by which plants lose excess water vapour through stomata, and it helps create a continuous upward pull that draws water and dissolved minerals from the roots to the rest of the plant.

Written by Satish

NCERTBooks.org is an independent educational resource run by a small team focused on making official NCERT textbooks easy to find, read, and download for students, parents, and teachers across India. We are not affiliated with NCERT or the Ministry of Education -- we organise publicly available NCERT content by class and subject, verify links against official sources, and build tools (like our in-browser reader) that make studying more convenient. Every guide we publish is written and reviewed by our team based on the actual NCERT curriculum and syllabus.