- Fact: Air sacs/ air spaces inside leaves and stems .
- Explanation : which keep the plants afloat close to the surface to obtain maximum sunlight
- Fact : their stems have no woody tissue.
- Explanation: Water buoyancy provides support for these plants .//If the plants are removed from water, they become limp and floppy.
Hydrilla sp
Elodea sp
Floating plants Eg. Eichornia crassipes (water hyacinth)
Fact: Broad leaves that are firm but flexible
Explanation: to resist tearing by wave action
Fact:Aerenchyma tissues in the stems and leaves //Aerenchyma are spongy tissues with large air spaces between the cells.
Explanation:They provide buoyancy so that plants can float on the water surface
Aerenchyma cells
No comments:
Post a Comment