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Why do unicellular organisms have less need for a complex transport system?

Answer and explanation

Correct answer: A single cell can exchange materials directly with the environment

The governing concept is the relationship between organism size and material exchange. A unicellular organism consists of one cell, and its cell membrane is directly exposed to the surrounding medium. Oxygen and dissolved nutrients can enter, while carbon dioxide and other wastes can leave, largely by diffusion. Because there are no distant tissues or organ systems to supply, a complex internal transport network is unnecessary. Thus option A is correct.

Related tags

Unicellular OrganismsDiffusionTransportLife ProcessesWorld Of LivingScienceClass 10 Mcq

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