Walk-In Take out notebook, folder, and pencil box and agenda. PUT YOUR PLANT BOOK IN THE BASKET RIGHT NOW, IF YOU DID IT FOR EXTRA CREDIT. C’s, get your group’s plant! What do you observe? Open your notebook to record observations.

Copy the agenda for this week. Mon. – Photosynthesis (Photo.) Tues. – Nonfiction reading on photo. Wed. – 8th Gr. Lab: Photo. Web Quest and QUIZ on photo. Thus. – Pollination Fri. – “Dear Queen Bee”

Reminders… Plant projects are due next Mon. Sept. 25, at the start of class. Do not bring them upstairs early. When the bell goes, you may drop them off in this classroom, in your period’s pile. Test makeup – Those needing to improve their test grade will receive a practice sheet tomorrow, with a retake time on Wed.

Why are leaves called the “food factories” of a plant or tree? Walk-In Take out notebook, folder, and pencil box and agenda. Copy the question and answer in sentences: Why are leaves called the “food factories” of a plant or tree?

Answer Leaves are called food factories because photosynthesis, the process in which plants make their own food, occurs in the leaves. The green chlorophyll in leaves is needed for photosynthesis to happen.

Photosynthesis

Set up your notebook Use Cornell notes format: make a narrow column on the left, and a wide column on the right. Put headings of slides on the left, and the information on the right.

Meaning of Photosynthesis Photo means light Synthesis means put together. Photosynthesis is the process in which plants make their own food using light and other ingredients.

We all need photosynthesis! Directly or indirectly, all life on Earth depends on photosynthesis. Can you explain how plants and humans depend on each other? Plants take in carbon dioxide and release oxygen. Animals and humans take in oxygen and release carbon dioxide. This exchange of gases balances our atmosphere. Plants help humans to breathe, and humans help plants make their own food.

Plants create their own food (sugar) to grow. Animals and humans eat the plants for food and energy Plants provide other forms of energy.

The energy stored in petroleum, natural gas, coal, and firewood all came from plants which have stored the energy from the sun via photosynthesis

How Photosynthesis Happens How green plants make their own food Plants Need Light - from the sun Water - from roots Carbon dioxide – from air, enters plant through tiny openings under the leaves called stomata Chlorophyll: green color in plants that traps energy from sunlight to make food

Photosynthesis A chemical reaction makes glucose (sugar) and oxygen from the carbon dioxide and water The plant keeps the glucose (sugar) as the main source of food for the plant for the plant to grow. The plant releases the oxygen into the atmosphere.

Make a diagram Follow along as we make a diagram to help explain photosynthesis.

Video Clip Consolidate your knowledge of photosynthesis by viewing this video clip! (Discovery Education, Photosynthesis)