Why is the process of simple diffusion sufficient for taking in food, exchange of gases and removal of waste in unicellular organism but not sufficient in multicellular organism.
Answers
Answer:
Unicellular organisms consist of only one cell and have their surface area In contact with atmosphere and so can make do with diffusion.
in case of multicellular organisms they have tissue layer which is in contact with outer surroundings(epithelial tissue layer) and tissues beneath the skin which are not in contact with atmosphere.So for for food,air,etc we have tissue specificity such as vascular system for transport,respiratory system for air,and digestive system for digestion.
Answer:
Unicellular organisms do not require more energy and even they cannot make large amount of energy, so simple diffusion is sufficient for it.
But in Human Beings,
more energy is required for doing work so simple diffusion is not sufficient for transportation.
Explanation:
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