Matter Cycling - Lesson 5

Data source B

Electron microscope image of a small spot from the
surface of the underside of a leaf

Data source C

400× microscope image of a slide made from the outer layer of tissue
from the underside of a leaf

Data source D

400× microscope image of a slide made from a thin section of
tissue from the inside of a leaf

Data source E - Video of a slide made from a thin section of living
tissue from the inside of a leaf

Discussion Questions: (answer on pg 26)

• What do you know about animal cells?

• How are plant and animal cells similar?

• How are plant and animal cells different?

Reflection Questions: (answer on pg 27)

1. What pattern did scientists observe in plant cells in different light conditions?

2. Think about what you know about light and energy. What do you think the light is doing in the plant cells?

3. Do you think plants need light? Why or why not?

If we could represent what was going on inside a plant using a simulation:

• What inputs and outputs of the plant system would we want to represent?

• What structures of the plant would we want to represent?