"A specialized system is developed by multicellular organisms to send the materials to all parts
of their body but not in unicellular organisms". Justify the statement.
5. Artery walls are very strong and elastic. Why?
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The unicellular organisms have the endoplasmic reticulum for transportation of substances in their body.
Explanation:
- 4. However in case of multicellular organism there needs to be a constant environment such that they can transport their food from one part of their body to the other part of the body in cells which are far from each other. Hence our transportation system is required
- 5. The arteries are strong and elastic because they have muscles in their outer wall. As a result of this day have narrow lumen. Since the muscles are strong and have property of elasticity the intra arterial walls are strong and elastic
To know more,
how is a single cell similar to an elephant - Brainly.in
https://brainly.in/question/8042135
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