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Digestive System of Earthworm MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Quick Facts
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12 Questions around this concept.
Solve by difficulty
In which segments of the alimentary canal does the stomach present?
The part of the alimentary canal present in the 8-9 segments of the alimentary canal of earthworms is
The intestine of an earthworm lies between
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The characteristic feature of the earthworm intestine is
In the earthworm, the dorsal wall of the intestine from the 26th to 35th segment forms a median internal fold called
Which of the following matches is correct in earthworm?
I. Pharynx - 1st segment
II. Stomach - 10th to 14th segment
IV. Gizzard - 26th segment
V. Mouth - 1st segment
Choose the correct option.
Which of the following is not a correct match of the part of alimentary canal in earthworm, its location and function?
One very special feature in the earthworm Pheretima is that:
Which one of the following structures in Pheretima is correctly matched with its function?
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Download EBookOne very special feature of the earthworm Pheretima is that
Concepts Covered - 0
Alimentary Canal of Earthworm
Alimentary Canal of Earthworm
- The alimentary canal is a straight tube that runs between the first segment to the last segment of the body of an earthworm
- The buccal cavity is situated in 1-3 segments
- It is followed by the muscular pharynx
- The pharynx is followed by an oesophagus in 5-7 segments
- It is followed by a muscular gizzard in 8-9 segments
- Gizzard helps in grinding the soil particles and decaying leaves
- Gizzard continues into stomach that extends from 9-14 segments
- Stomach contains calciferous glands that neutralise the humic acid present in humus
- The intestines are the major organs that begin from the 15th segment and continue until the last segment
- At segment 26, a pair of the intestinal caecae project from the intestine
- From segment 26 to 35, the intestine shows a characteristic feature called typhlosole
- Typhlosole are the internal medial folds of the dorsal wall
- Typhlosole increases the effective area of absorption in the intestine
- The alimentary canal opens into anus which is a round small aperture
- During digestion, the ingested soil is passed through the digestive track and is digested into small absorbable substances which are absorbed through the membranes of the intestine
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