Which plant structure is the site of photosynthesis?

1. Which plant structure is the site of photosynthesis? • Stem • Leaves • Flower • Roots Leaves!

2. Which organelle helps the plant perform photosynthesis? • Mitochondria • Chloroplast • Ribosome • Nucleus Chloroplast!

3. Which plant structure anchors the plant into the ground? • Stem • Leaves • Flower • Roots Roots!

4. Which plant structure supports the plant? • Stem • Leaves • Flower • Roots Stem!

5. leaf Plants can be divided into 3 main parts: Some plants may also have flowers!

6. Stems • Support the plant • Transport of water & nutrients through xylem & phloem • Produce leaves & flowers & holds them upright

7. Roots • Anchor the plant into the ground • Take in water & nutrients • Two types of roots: • Fibrous • Tap Roots

8. Fibrous Roots • No root grows larger than another • Can have up to 14 million roots! • Help prevent erosion • Large surface area to absorb lots of water Grasses, Violets, & Marigolds all have fibrous roots!

9. Fibrous Roots

10. Tap Roots • Single main root with secondary hair-like roots extending • Difficult to pull from the ground Carrots, Dandelions, Beets, & Radishes all have tap roots.

11. Tap Roots

12. Which type of root is this? • Tap Roots • Fibrous Roots Fibrous Roots!

13. Which type of root does this plant have? • Tap Roots • Fibrous Roots Fibrous Roots!

14. Which type of root is this? • Tap Roots • Fibrous Roots Tap Root!

15. Desert plants most likely have which type of root? • Tap Roots • Fibrous Roots Fibrous Roots! Fibrous Roots cover a large surface area, allowing them to absorb a large amount of water!

16. Leaves Blade • Site of photosynthesis • Structure: • The large, flat surface is the blade, and it is connected to the stem by the petiole.

17. Leaves Blade • Structure: • Leaves are produced from the stem at the axillary bud • It can be simple (1 blade per leaf), or compound (several blades per leaf)

18. Simple Leaves Ilex cornuta Maple Leaf

19. Compound Leaves Rose Bush

21. Leaves • Epidermis: skin of the leaf, protecting it • Mesophyll Layers: where photosynthesis takes place

22. Leaves • Stomata (sin. “stoma”): openings that allow water & oxygen out, and carbon dioxide in. Controlled by guard cells. • Cuticle: waxy coating that helps prevent water loss via transpiration (evaporation of water from leaves)

24. Which part of the leaf contains the most chloroplasts? • Epidermis • Mesophyll Layers • Stomata • Cuticle The Mesophyll Layers! Photosynthesis occurs here, so they contain many chloroplasts.

25. Would you expect the stomata to be open or closed at night? • Open • Closed Closed! The stomata open to allow CO2 in during photosynthesis, but if there is no sun, they’ll close to save water.

26. Which plant structure absorbs water? • Stem • Leaves • Flower • Roots Roots! The roots absorb water, while the leaves release it (transpiration).

27. Which plant structure contains tissue that moves water & sugar through the plant? • Stem • Leaves • Flower • Roots Stem! The stem contains the Vascular Tissue, which consists of the Xylem & Phloem.

28. Which part of plants are edible? • Stem • Leaves • Flower • Roots • Seeds • Fruit All of the above!

29. Do you know where your food is from? • Sort the different types of food by what part of a plant you think it came from. • When your group is finished, raise your hand to get your exit ticket! • Do not turn in your exit ticket to the basket. Put it in my hands when the bell rings!