Choose the correct statement w.rt. porifera
Ostia are present in the body wall for water exit
Water enters in central cavity through osculum
Collar cells line only the spongocoel
Body is supported by spicules or spongin fibres
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Answer:
Option (c).
Explanation:
Collar cells line only the spongocoel.
Because spongocoel is a body with single cavitywhich is divided into flagellated chambers or canals,lined by flagellated choanocytes.
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