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list four similarities and differences between alimentary canal of birds and mammals.​

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Differences between the alimentary canal of.a bird and a mammal

The alimentary canal is a long tube-like organ that starts at the beak and ends with the vent or cloaca in the abdominal region.

  1. Generally the alimentary canal has layers of muscle that run lengthwise and around it and is lined with mucous.

1.

BIRD - Presence of tongue in mouth

GRASSHOPPER - Tongue is absent

2.

BIRD - Mouth is modified into beak

GRASSHOPPER - Mouth is modified into mandible and maxillae for chewing and grinding

3.

BIRD - Presence of pancreas and duodernum

GRASSHOPPER - Absence of duodernum and pancreas

4.

BIRD - Has long alimentary canal

GRASSHOPPER - Relatively short alimentary canal

5.

BIRD - Hind gut ends in cloaca

GRASSHOPPER - Hindgut ends in anus distinct from the reproductive tract.

The similarities include the following:

  1. Both have narrow oesphagus
  2. Crop is present in both organisms
  3. Caecum and gizzard is present in both
  4. Midgut is present.

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