1.1 Problem faced by multicellular in obtaining their cellular requirements and removing their waste products
- Eg: Amoeba sp and Paramecium sp
- Have large total surface area (TSA/V)
- Obtain oxygen and nutrients
- Carbon dioxide eliminated by diffusion (simple diffusion)
- Doesnt need internal transport system
Multicellular organisms:
- Eg: man, cow, rat, etc
- Have small TSA/V
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