Learn: Photosynthesis

Welcome!Today we'll explore photosynthesis, a vital process that helps plants produce their own food. Let's break it down step by step to understand how it works and why it's important!

What is Photosynthesis?Photosynthesis is the process where plants use sunlight, carbon dioxide, and water to create glucose (a type of sugar) and oxygen. It happens in the chloroplasts of plant cells and is essential for life on Earth as it provides energy and oxygen.

The Word Equation for PhotosynthesisThe word equation for photosynthesis is: Carbon dioxide + water → glucose + oxygen. This shows how plants transform simple substances into energy-rich food.

Where Does Photosynthesis Happen?Photosynthesis occurs in the chloroplasts, which are specialised structures in plant cells. Chloroplasts contain chlorophyll, a green pigment that captures sunlight, enabling the process.

Factors Affecting PhotosynthesisThe rate of photosynthesis depends on three main factors: light intensity, carbon dioxide concentration, and temperature. If any of these are limited, photosynthesis slows down.

How Plants Use GlucosePlants use the glucose produced during photosynthesis for respiration (to release energy), to make starch for storage, and to create cellulose for building cell walls. This makes glucose vital for plant growth and survival.

Review Time!Great work! You've learned about photosynthesis, its word equation, factors affecting it, and how plants use glucose. Let's test your understanding with a few questions.