Home › concepts › photosynthesis

Photosynthesis Explained

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create glucose and oxygen. It is the foundation of life on Earth b

✓ 100% Free ✓ No Login Needed ✓ NCERT / CBSE Aligned ✓ Download as PDF

TL;DR: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create glucose and oxygen. It is the foundation of life on Ea…

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 23, 2026

🤖 Stuck on any question? Ask Syllab's free AI Tutor for a step-by-step explanation — instant, unlimited, no login.

Photosynthesis: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create glucose and oxygen. It is the foundation of life on Earth b

Photosynthesis Explained Simply

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create glucose and oxygen. It is the foundation of life on Earth b This is a key Biology concept for Class 10.

🎬 Watch the animated, step-by-step Photosynthesis diagram →

Frequently Asked Questions

Do all plants photosynthesize?

Most plants photosynthesize, but some parasitic plants and fungi do not because they lack chloroplasts or live in darkness. Saprophytic plants obtain energy from dead organic matter instead.

Why are leaves green?

Leaves are green because of chlorophyll, the pigment that absorbs light energy. Chlorophyll absorbs red and blue light most strongly but reflects green light, which is why we see leaves as green.

Can photosynthesis happen without sunlight?

No, the light-dependent reactions absolutely require sunlight. However, the Calvin Cycle can proceed briefly using stored ATP and NADPH, but eventually, it stops without light energy input.

Related Biology Concepts

  • Cellular Respiration Explained
  • The Cell - Structure and Functions Explained
  • Plant and Animal Tissues Explained
  • Human Digestive System Explained
  • Human Respiratory System Explained
  • Human Circulatory System Explained

Browse all concepts →

Explore:

  • Syllabus
  • Practice
  • Mock Tests
  • NCERT Solutions
  • Coding
  • GK Quiz
  • Career Predictor
  • AI Tutor
  • Live Quiz
  • Doubt Solver
  • Microlearning
  • Free Alternatives
  • Kids Zone
  • Study Room
  • Calculators
  • Worksheets

Syllab.in — Free learning for Indian students, Class 1–12