Learn: Photosynthesis

Welcome!Today we'll learn about photosynthesis, a key process that plants use to make food. It's an essential part of the ecosystem, so let's explore how it works step by step!

What is Photosynthesis?Photosynthesis is the process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy stored in glucose. This process takes place in the chloroplasts, where a pigment called chlorophyll absorbs sunlight.

The Equation for PhotosynthesisThe chemical equation for photosynthesis is: 6CO2 + 6H2O → C6H12O6 + 6O2. This means carbon dioxide and water react, using sunlight energy, to produce glucose and oxygen. Plants use glucose as food and release oxygen into the atmosphere.

Where Does Photosynthesis Occur?Photosynthesis occurs in the chloroplasts, which are specialised organelles found in plant cells. Chloroplasts contain chlorophyll, the pigment that absorbs sunlight, enabling the process to happen.

What is Chlorophyll?Chlorophyll is a green pigment found in chloroplasts. It is responsible for absorbing light energy, particularly from the red and blue parts of the light spectrum. This energy is then used to drive the chemical reactions in photosynthesis.

Factors Affecting PhotosynthesisThe rate of photosynthesis can be affected by several factors. These include light intensity, carbon dioxide concentration, and temperature. If any of these factors are limited, the rate of photosynthesis will decrease.

Why is Photosynthesis Important?Photosynthesis is crucial because it provides food and oxygen for living organisms. Plants use glucose for energy and growth, while oxygen is essential for the respiration of most living things.

Review Time!Great work! You've learned about photosynthesis, including its process, equation, and importance. Let's test your understanding with a few questions.