1. Important Plant Processes
5th Grade

2. Transpiration is…
when water evaporates from the leaves of plants as water vapor
It is a form of evaporation
It is sometimes called “evapotranspiration”

3. Transpiration

4. Plants are called producers. Why?
They use photosynthesis to make their own food.
They produce the beginnings of most of the food energy on Earth
Animals get their own food energy from plants

5. Photosynthesis is…
A plant’s food-making process where plants capture the energy of light and use it to make their own food

7. What does the word “Photosynthesis” mean?
This term comes from the Greek words that mean “putting together by light.”

8. How does the process of Photosynthesis work?
1) Sunlight strikes a green part of the plant, such as a leaf.
2) The chemical chlorophyll (which turns plants green) makes sugar and oxygen

9. What does chlorophyll need to make sugar and oxygen?
SUNLIGHT
WATER
CARBON DIOXIDE

10. What is the scientific name for this sugar?
Glucose!

11. Photosynthesis Equation:

12. Photosynthesis Equation

13. What happens once sugar (glucose) molecules are made?
Sugars in the leaf go into the leaf’s veins and to all parts of a plant
Oxygen a plant makes goes into the air

14. What is Respiration? When plants use oxygen to break apart sugar
The oxygen is released from the plant and humans breathe it in

15. What percent of the air you breathe in is oxygen?
21%

16. Respiration Sugar and oxygen join to produce water and carbon dioxide
Humans breathe in oxygen and release carbon dioxide

17. What are Tropisms?
A response of a plant toward or away from a stimulus
Stimulus: something in an environment that causes a living thing to react
Response: when a living thing responds to a stimulus

18. Stimulus and Response Stimulus: the Sun
Response: plant grows toward the area of sunlight