1. Plants have three main parts - roots, stems, and leaves. 2. Roots take in water from the ground, which travels up through tubes called xylem. Xylem carries water to the leaves where it is used for photosynthesis. 3. Leaves make glucose during photosynthesis, which travels down the plant through tubes called phloem. Phloem carries glucose to all cells in the plant.

1. Assign Yourself: Plant Structure
Practice
Do Now:
1. What are the parts of a virus?
2. How is a virus different from an animal cell or bacterial
cell?
3. Which of these is caused by viruses:
• HIV
• Influenza
• Cold
• Mosiac Disease
• Bacterial Infection
• AIDS
• Chicken Pox

2. Plant Structure

3. What are the main parts of a plant?
• Plants have 3 main parts: roots, stem, and leaves

4. How does water travel through a plant?
1. Roots take in water from the ground.
2. Water travels up the plant through tubes called
xylem.
3. Xylem carries water to the leaves, where it is used
for photosynthesis.

5. Processing Piece:
Draw a picture showing how water travels
through a plant.

6. How do nutrients like glucose travel
through a plant?
1. Leaves make glucose during photosynthesis.
2. Glucose (and other nutrients) travels down the
plant through tubes called phloem.
3. Phloem carries glucose to all cells in the plant,
where it is used to make ATP (energy) in the
mitochondria.

7. Processing Piece:
Draw a picture showing how glucose travels
through a plant.

8. What is vascular tissue?
• Vascular tissue = xylem and phloem
• Vascular tissue is what carries water and nutrients
through the body of a plant.

9. Processing Piece:
• What body system in the human body has a similar
function?

10. How do plants let in CO2 and get rid of
O2 (a waste product)?
Plants have stomata (little holes on the bottom of
their leaves) where they let CO2 in and let O2 (a waste
product) out.

11. Processing Piece:
Which TWO body systems have a similar function?

12. What is transpiration?
When a plant loses water through its stomata; water
can turn into water vapor (a gas) and go out from the
leaf into the air.

13. Processing Piece:
Write “transpiration” and draw a picture to illustrate
what it means.

14. How does a plant prevent transpiration?
1) Plants prevent transpiration by closing their
stomata when they start to dry out.
If a plant becomes too dry, the guard cells close the
stomata to keep the water inside.
2) Leaves are covered by a thin layer of wax called a
cuticle that stops air from getting out.

15. Processing Piece:
Label the vascular tissue, xylem and phloem, stomata,
guard cells, and cuticle in the leaf cell below.

16. Exit Ticket:
1. What do xylem and phloem cells do?
2. What is transpiration?
3. What are 2 things plants do to prevent
transpiration?

17. • Bri
• Migdalia
• Joanna
• Manny