1. How do Leaves Help a Plant?
Ch. 4 Lesson 1
How do Leaves Help a Plant?

2. Does the direction seeds are planted affect the direction the roots grow?
Collect information- seeds need water, roots need nutrients, roots act like straws sucking up water, roots anchor a plant
Hypothesis- I think that ____________
Procedure- See pgs
Observations-

3. leaves
make most of plant’s food
are organs - made of cells & tissues

4. type of tissue that carries food & water to the plant
vessel tissue
type of tissue that carries food & water to the plant

5. epidermis
outer layer
vessel tissue
stoma
Parts of a leaf

6. photosynthesis process plants use to make sugar (food)
carbon dioxide + water + sunlight energy oxygen + sugar

7. photosynthesis
Sugar

8. cellular respiration
use oxygen with food to get energy for growth, repairs & reproduction

10. chloroplasts - give plants their green color - where photosynthesis happens
YouTube video-Chloroplasts

11. starch
plants join many sugars
for long term storage of food

12. formed when 1,000’s of sugars combine makes plants cell walls
cellulose
formed when 1,000’s of sugars combine
makes plants cell walls
Scanning electron micrograph of wood cellulose

13. Photosynthesis song