Water canal is lined by

1.Spongin fibres

2.Choanocytes

3.Collar cells

4.Both 2 and 3

Subtopic:  Phylum Porifera |
 86%
From NCERT
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Canal system in sponges helps in

1.Food gathering

2.Respiratory exchange

3.Removal of waste

4.All of the above

Subtopic:  Phylum Porifera |
 99%
From NCERT
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In sponges, digestion is

1.Intercellular

2.Intracellular

3.Both inter and inter cellular

4.Gastric cavity

Subtopic:  Phylum Porifera |
 74%
From NCERT
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The mode of reproduction in sponges is

1.Sexual

2.Asexual

3.Both 1 and 2

4.None of these

Subtopic:  Phylum Porifera |
 84%
From NCERT
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Which of the following is true about sponges except

1.Sponges are hermaphrodite

2.Fertilisation is internal

3.Development is direct

4.Primitive multicellular animals

Subtopic:  Phylum Porifera |
 78%
From NCERT
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Find the incorrect match

1.Sycon-Scypha

2.Spongilla-Fresh water sponge

3.Euspongia- Bath sponge

4.Sycon- Bath sponge

Subtopic:  Phylum Porifera |
 94%
From NCERT
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Which one of the following is incorrect about Porifera?

1.Presence of spongin fibres

2.Cellular level of organisation

3.Presence of mouth and digestive cavity

4.Pores all over the body

Subtopic:  Phylum Porifera |
 90%
From NCERT
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Which of the following cell of sponges contains flagella

1.Nematocyst

2.Spongioblast

3.Amoebocyte

4.Choanocytes

Subtopic:  Phylum Porifera |
 83%
From NCERT
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Which of the following is true about the given organism?

            

1.It is a medusa form of Aurelia

2.It is Fresh water sponge

3.Central canal system is present in it

4.It’s mouth is formed first

Subtopic:  Phylum Porifera |
 55%
From NCERT
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Which of the following is true about the following  organism?

          

1.Radial symmetry is present

2.Fertilisation is external

3.multicellular animal

4.coelomate organism

Subtopic:  Phylum Porifera |
 75%
From NCERT
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