Question
Biology Question on Photosynthesis in higher plants
Which of the following regions of the alimentary canal of man does not secrete a digestive enzyme?
A
(A) Oesophagus
B
(B) Stomach
C
(C) Duodenum
D
(D) Mouth
Answer
(A) Oesophagus
Explanation
Solution
Explanation:
Oesophagus of the alimentary canal of man does not secrete a digestive enzyme. Oesophagus just helps in transferring of partially digested food from mouth to stomach, it has no active role in digestion process. It is thus devoid of any enzyme secretion. Hence, the correct option is (A).