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

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

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

1.Bilateral symmetry is present

2.Hermaphrodite

3.Indirect development

4.Acoelomate organism

The name of the phylum Cnidaria is derived from the

1.Nematocysts

2.Cnidoblasts

3.Cnidocytes

4.Both 2 and 3

Stinging capsule present in Cnidarians is called

1.Nematocysts

2.Choanocytes

3.Cnidocytes

4.Both 2 and 3

Cnidocytes are used for

1.Anchorage

2.Defence

3.Capturing of prey

4.All of these

Which of the following is not true about Cnidarians

1.Radial symmetry

2.Diploblastic

3.Tissue level of organisation

4.Deutrostomes

The distinctive feature of Cnidarians is

1.Cnidoblast

2.Polyp and Medusa form

3.Gastro-vascular cavity

4.Hypostome

Which of the following is true about Gastro-vascular cavity of Cnidarians?

1.It contains single opening

2.Mouth on hypostome

3.Anus on hypostome

4.Both 1 and 2

The sessile and cylindrical form of Cnidarians is called as

1.Medusa

2.Polyp

3.Both 1 and 2

4.Neither medusa nor Polyp