Tree Rings active xylem dead xylem phloem Xylem

Tree Rings active xylem dead xylem phloem

Xylem and Phloem

What is vascular tissue exactly?

Spiderwort Leaf (stomata)

Anatomy of a Leaf Photosynthesis: 1) The 2 substances required for photosynthesis are: carbon dioxide (CO 2 ) and water (H 2 O) 2) The main product of photosynthesis is: glucose (C 6 H 12 O 6) 3) The waste product is: oxygen (O 2) You should be w riting down anything you see in RED.

Leaf Structures Open stoma Please take out your homework (DR 5. 1) and copy the following notes into your science journal. Stomata guard cells • Opening formed by two ______. underside of the leaf. • Found on the ______ CO 2 to enter the leaf. • Allow _______ O 2 and _______ • Allow _______ water vapor to exit. at night • Conserve water by closing _____. Closed stoma

Stomata For photosynthesis to take place, leaves must have a constant supply of: CO and water 2 Stoma Guard cells Leaves must get rid of: O 2 and excess water vapor

Layers of a Leaf A. B. C. D. E. F. G. H. Cuticle Epidermis Stomata (guard cells) Palisade layer Vein Spongy layer (air space) Xylem Phloem

Why Are Leaves Green?

Layers of a Leaf A. Cuticle B. Epidermis C. Stomata (guard cells) D. Palisade layer E. Vein F. Spongy layer (air space) G. Xylem H. Phloem

Write This Down! Photosynthesis Cellular Respiration • light energy food • food usable energy • CO 2 in; O 2 out • O 2 in; CO 2 out • occurs in chloroplasts (only in plants) • animals do this all the time; plants ALSO do it when they’re not doing photosynthesis.