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Phylum - Porifera MCQ Question with Answer

Phylum - Porifera MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 15
The scientific name of commercial bath sponge is

Cliona
Hyalonema
Chalina
Euspongia
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Question No : 16
Larva of sponge is known as

planula larva
amphiblastula larva
trochophore larva
glochidium larva
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Question No : 17
Ostia are meant to

admit water current
pass out water current
ingest food
excrete waste products
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Question No : 18
Sponges are not found in

cold water
sea water
sandy shore
brackish water
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Question No : 19
Choanocytes in sponges are present

on the external body surface
line the gastric cavity
located between the outer and inner layers
in the mesodermal layer
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Question No : 20
Which of the following statements is true of sponges ?

One mouth and innumerable exits
Mouth serves for both, ingestion and egestion
Innumerable mouths and one exit
The body encloses a single cavity the coeienteron
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Question No : 21
Nervous system in sponges

is well developed
is in the form of a network
is made up of several interconnected ganglia
is absent
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