Class 10 Science Chapter 5: Life Processes
Chapter 5 of the NCERT Class 10 Science textbook “Science”.
Chapter at a glance
Life processes are the basic activities that keep living organisms alive. This part explains what life processes are and focuses on nutrition in plants, especially photosynthesis. You will learn the leaf structure, the raw materials and conditions needed for photosynthesis, and simple experiments and uses. Later parts will cover nutrition in animals and other life processes.
What you will learn: Definition of life processes, the steps and equation of photosynthesis, the role of leaf structure and factors affecting photosynthesis.
Why it matters: Photosynthesis produces food and oxygen for almost all life on Earth; understanding it helps explain ecosystems, crop growth and why plants need light and water.
Key concepts
- Life processes — Basic activities that keep living organisms alive and functioning.
- Leaf structure and function — Leaf parts are built to capture light and allow gas exchange for photosynthesis.
What the chapter covers
- Try at Home — A simple, safe observation to connect leaves, light and starch.
- Why Questions — Short explanations that build the 'why' understanding.
Remember for the exam
- Chlorophyll and light are essential words in any photosynthesis answer.
- Xylem = water, Phloem = food (sugar).
Common mistakes
- Mistake: Writing photosynthesis as converting oxygen into glucose. Better: Photosynthesis converts carbon dioxide and water into glucose and oxygen.
- Mistake: Claiming plants eat soil nutrients as their main food. Better: Plants make food by photosynthesis; soil nutrients are used to build molecules and enzymes.
- Mistake: Forgetting to mention light in the photosynthesis description. Better: Always mention light and chlorophyll when describing photosynthesis.
These notes are a study aid. Check important facts against your textbook.
Study this chapter
- A clear study guide that explains the chapter step by step
- Quick revision for the day before a test
- Practice quizzes that show which ideas need more work
- An AI tutor to ask questions about “Life Processes”
Try it in the virtual lab
- Stomata in a leaf peel (microscope)
- Human Heart: blood flow and double circulation
- The Nephron: how urine is formed
More in Class 10 Science
- Previous: Chapter 4: Carbon and its Compounds
- Next: Chapter 6: Control and Coordination
- All 13 Science chapters for Class 10
Chapter names follow the current NCERT textbooks. My Study Mantra does not reproduce textbook pages.