Photosynthesis and Respiration in Plants

Table of Contents

• Photosynthesis in Plants
• Respiration in Plants
• Summary
• What’s Next?

In the previous segment, we learnt about Pulmonary and systemic circulation. In this segment, we will learn about photosynthesis and respiration in plants.

What is Photosynthesis?

• Photosynthesis is the process in which plants convert light energy to chemical energy to prepare their own food.
• Plants need three reactants for this process: carbon dioxide, water, and sunlight.
• These reactants react to form glucose and oxygen. The reaction is:

Chemical equation of photosynthesis

1. Sunlight
   • The leaves of the plant play the most important role in photosynthesis.
   • The upper part of the leaf is composed of Palisade cells and is responsible for trapping sunlight.

Palisade cells

• • The palisade cells contain a large number of Chloroplast, which contains Chlorophyll

and they are the site for photosynthesis.

1. Carbon dioxide