Access Prior Knowledge Lesson 1: How do leaves help a plant? Opening Activity Open Science textbook to page 94. Open Science folder to review vocabulary words and outline for the chapter. Open Science journal and answer the following questions: 1- What is the main difference between and animal cell and a plant cell ? Re view Content Cards and Q-Cards in bin, sharing with partners quizzing each other quietly. Log in to clickers using student ID number. Be ready to review home learning when timer goes off. Don't forget to write your home learning in your agenda page 34A.

1Cells and tissues make up leaves. Yes No Do you agree with the statement?

2Leaves have an outside epidermis that protects the plant. Yes No Do you agree with the statement?

3Chloroplasts are in plant and animal cells. Yes No Do you agree with the statement?

4A plant uses oxygen to make carbon dioxide during photosynthesis. Yes No Do you agree with the statement?

Cells and Tissues in Leaves Plants make their own food in its leaves. Leaves are organs made of cells and tissues. The epidermis, top part of the leaf, is the layer of flat cells that protects the plant from the outside, like your skin. Tiny openings at the bottom of the leaf allow air to pass in and out of the inner tissue. Vessel tissues carry food and water through a plant. Second paragraph pg. 95

Photosynthesis Photosynthesis is the process that plants use to make sugar for food. Plant cells use cellular respiration which means they use oxygen with food for growth, repairs and reproduction. Plants need sunlight, water, and carbon dioxide for photosynthesis. Sunlight gives the cell energy for photosynthesis. It gets water from its root hairs and enters the chloroplasts. Carbon dioxide comes from the atmosphere and enters through the leaves. The process of photosynthesis uses water and carbon dioxide to make sugar, and also produce oxygen. Plants also store sugar, which turn into starches. Sugar is also used in plants to form cellulose, a chemical that makes up a plants cell wall. Plants have more sugar in the daytime than night time because the suns energy reaches the chloroplasts to it can make more sugar, at night there is no sun so plants have to use the stored sugar and cannot produce more sugar. Third paragraph pg. 96

MatchQuest Carbon Dioxide Water Suns Energy Sugar Oxygen Photosynthesis

TextQuest 1. What is the purpose of the tiny opening on the bottom of the leaves? 2. Describe the process of photosynthesis. 3. Why do plants go through photosynthesis? Don't forget to write your home learning in your agenda page 34A.