Cross section of body of an invertebrate is given. Identify the animal from the body plan

Cockroach

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Planaria

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Round worm

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Earthworm

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Solution

The correct option is B Planaria
Planaria have three germ layers (ectoderm, mesoderm, and endoderm), and are acoelomate (they have a very solid body with no body cavity).
They have a single-opening digestive tract.
Their bodies are surrounded by a dense and compact net of subepidermal muscle fibers arranged in different orientations.
So, the correct answer is "Planaria'.

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