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Match the following:
Layers of the alimentary canalDescription1. Serosai) It is the innermost layer. It contains irregular folds andgastric glands in the stomach region.2. Muscularisii) It is made up of loose connective tissues. It containslymph blood and nerves3. Submucosaiii) It is the outermost layer. It is made up of mesotheliumand connective tissue.4. Mucosaiv) It is made up of smooth muscles. It is longitudinal fromoutside and circular from inside.


A
1-i, 2-iii, 3-iv, 4-ii
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B
1-ii, 2-ii, 3-iv, 4-iii
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C
1-iv, 2-i, 3-iii, 4-ii
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D
1-iii, 2-iv, 3-ii, 4-i
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Solution

The correct option is D 1-iii, 2-iv, 3-ii, 4-i
 The alimentary canal is a tube with varying diameter and muscular walls. The different layers of the alimentary canal are- serosa, muscularis, submucosa and mucosa.
The serosa is the outermost layer. It is made up of mesothelium and connective tissue.
Muscularis is made up of smooth muscles. It has an outer longitudinal muscle layer and and inner circular muscle layer.
The submucosa is made up of loose connective tissues. It contains lymph, blood and nerves.
The mucosa is the innermost layer. It contains irregular folds and gastric glands in the stomach region.

Biology

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