A) Typhlosole
B) Calciferous glands
C) Intestinal caecum
D) Gizzard
Correct Answer: B
Solution :
Earthworm has a straight alimentary canal representing a tube within tube plan. Wall of stomach contains calciferous glands, the secretion of which neutralizes the acidity of soil or humus. Typhlosole is a highly glandular vascular longitudinal ridge increasing the area for absorption of digested food.
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