1. 11/17 - 7th Grade Agenda Learning Objective: Learn about Plants
Collect HW: Unit Review & Reinforce p. 89 & 92
Textbook Reading
HW: Reading & Notetaking p
Reminder: Chap 4 Test on 11/18 & 11/19

2. Reflection
Prompt: Name 2 reasons why cells need to divide. What would happen if your cells stop dividing?

3. What is a plant? Autotrophs - Photosynthesis
Cell Wall (Made of cellulose, a chemical that makes the walls rigid)
Multicellular.

4. Origin of Plants – When did plants first appear?
Oldest plant: 400 million years old
Ancient Green Algae were ancestors of today’s plants.

5. 5 things that plants must do to survive on land.
Obtaining water and other materials
Retaining Water
Transporting Materials
Support
Reproduction

6. Living on Land – How do plants retain water?
Cuticle: Waxy waterproof layer covers the leaves of most plant and helps to retain water.

7. Transport and Support – How can plants grow so tall?
Vascular tissue: Internal tube like structures through which water and food move inside the plant

8. Classification of Plants
Nonvascular Plant: Grows low to the ground
Vascular Plant: Grows tall

9. Reproduction – Do plants produce eggs and sperms?
In plants, Fertilization occurs when sperm cell unite with an egg cell
The fertilized egg is called a zygote.

10. Complex Life Cycle Sporophyte Stage: Plant produce spores
Gametophyte Stage: The plant produce two kinds of sex cells or gametes (sperm & egg cells)

11. Nature of Light
Light is made up of red, orange, yellow, green, blue, and violet light
Sun is the source of energy on Earth.

12. Why does the lemon looks yellow and leaves look green?
Because lemon reflects yellow light
Plant leaves reflect green light.

13. Which color of light is absorbed by chlorophyll?
Chlorophyll absorb blue and red light

14. Why do leaves turn red and yellow in the autumn?
Chlorophyll masks the color of most accessory pigments during most of the year
In cool temperatures, chlorophyll breaks down and the colors of accessory pigments can be seen.

15. Photosynthesis Carbon dioxide + water sugar + oxygen
Excess food made by plants are stored in the roots, stems or leaves