Oesophagus in adult vertebrates is derived from
a)primitive gut
b)foregut
c)midgut
d)hindgut
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Answer:
Oesophagus in adult vertebrates is derived from the midgut
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1
Answer:
Explanation:
Oesophagus in adult vertebrates has evolved from foregut. So option b) is the correct answer here. Oesophagus is the second uppermost part of digestive tract. In embryonic stage, foregut is the first part of the digestive system, comprising of mouth to duodenum.
As the embryo grows into a baby and then to a adult creature, a part of this foregut develops into oesophagus, which is the passage carrying foods from mouth to stomach.
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