1. Plant Adaptations to Living in Wet Places

2. What is an adaptation?
A trait that allows organisms to survive their environment.
Examples?

3. What stresses does living in the wet places put on plants?
Unstable soil
Salt (if it is brackish or salt water)
No oxygen to the roots

4. Why no oxygen to the roots?
Bacteria in the soil use oxygen
Water keeps air from reaching the soil, so the used up oxygen does not get replaced.

5. Foldable 8 tabs  4 per side Outside=name of the adaptation
Inside=picture/description of the adaptation
Inside=how it helps the plant survive

6. Aerenchyma Enlarged holes in the stem
Allows oxygen to be transported down to the roots

7. Buttressing Flared out base of the trunk Provides stability
Increases surface area to allow for more oxygen to be brought into the plant

8. Fluting Folds in the base of the trunk
Increases surface area for increased gas exchange

9. Pneumatophores aka knees
Extra trunks
Increased surface area for increased gas exchange

10. Adventitious roots
Above ground roots
Allows for more oxygen intake

11. Hypertrophied lenticels
Enlarged openings in the trunk
Allows more oxygen to come in

12. Floating leaves Leaves float (duh) Allows for gas exchange
Better for photosynthesis

13. Salt glands Excrete salt from plants Maintains homeostasis
Seen in a lot of saltwater marsh plants such as Spartina alterniflora