1. Chapter 2 – Plant Structures and Functions Lesson 3 – Photosynthesis & Respiration © Brent Coley 2009 | www.mrcoley.com

2. A leaf makes food (sugar) for the plant.A leaf makes food (sugar) for the plant. To make food, a leaf needs two things:To make food, a leaf needs two things: 1.water 2.carbon dioxide What do leaves do? CO 2

3. A leaf gets water through veins (narrow tubes containing xylem).A leaf gets water through veins (narrow tubes containing xylem). A leaf gets carbon dioxide (CO 2 ) through stomata (tiny holes in the bottom of the leaf).A leaf gets carbon dioxide (CO 2 ) through stomata (tiny holes in the bottom of the leaf). What do leaves do?

4. Plants make food through a process called photosynthesis.Plants make food through a process called photosynthesis. The process takes place in chloroplasts, which are just below the epidermis (outer layer of the leaf).The process takes place in chloroplasts, which are just below the epidermis (outer layer of the leaf). Food Making

5. The Photosynthesis Equation:The Photosynthesis Equation: – Carbon dioxide + water + sunlight = sugar and oxygen Food Making

6. 1.In photosynthesis, plants release oxygen. 2.Animals take in oxygen and release carbon dioxide. 3.Plants take in the carbon dioxide, and the cycle starts over. What is the photosynthesis and respiration cycle?

7. When animals breathe in oxygen, it releases, or unlocks, the energy stored in food. This is called respiration.When animals breathe in oxygen, it releases, or unlocks, the energy stored in food. This is called respiration. What is the photosynthesis and respiration cycle?

8. Photosynthesis and Respiration Video Photosynthesis and Respiration Video

9. Public domain carbonation image courtesy of Wikimedia Commons. All other images courtesy of Microsoft Office Online.