alleryIn sponges the cells lining the spongocoel and canals are
ACnidocytes
BChoanocytes
CFlame cells
DAmoebocytes
Answer & Solution
Correct answer: B. Choanocytes
1. Sponges have a specialised cell type lining the spongocoel and inner canals.
2. These are called choanocytes or collar cells because of the collar-like ring around the flagellum.
3. Choanocytes drive the water current through the canal system.
4. Cnidocytes belong to cnidarians; flame cells to flatworms; amoebocytes assist digestion in sponges.
_Source: syllabus Biology, Ch 4 "Animal Kingdom", §4.2.1_
Keep practising Animal Kingdom
Browse all Animal Kingdom questions for AP Intermediate 1st Year, or explore more Biology topics.
Related questions
The segmentation seen in the earthworm is called:A body divided into segments with repeated organs shows:Animals with no body cavity at all are called:A cavity not lined by mesoderm is called a:Animals possessing a true coelom are called:A body cavity lined by mesoderm is called the:The mesoderm lies in the embryo between the endoderm and the:Animals whose embryo also has mesoderm are called: