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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Which of the following is  not true about the given organism?

                       

1.Bilateral symmetry is present

2.Hermaphrodite

3.Indirect development

4.Acoelomate organism

Subtopic:  Phylum Porifera |
 83%
From NCERT
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The name of the phylum Cnidaria is derived from the

1.Nematocysts

2.Cnidoblasts

3.Cnidocytes

4.Both 2 and 3

Subtopic:  Phylum Coelenterata |
 83%
From NCERT
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Which of the following cell is present on the tentacles and body of the Cnidarians

1.Nematocysts

2.Choanocytes

3.Cnidocytes

4.Both 2 and 3

Subtopic:  Phylum Coelenterata |
From NCERT
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Stinging capsule present in Cnidarians is called

1.Nematocysts

2.Choanocytes

3.Cnidocytes

4.Both 2 and 3

Subtopic:  Phylum Coelenterata |
 64%
From NCERT
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Cnidocytes are used for

1.Anchorage

2.Defence

3.Capturing of prey

4.All of these

Subtopic:  Phylum Coelenterata |
 99%
From NCERT
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Which of the following is not true about Cnidarians

1.Radial symmetry

2.Diploblastic

3.Tissue level of organisation

4.Deutrostomes

Subtopic:  Phylum Coelenterata |
 89%
From NCERT
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