Alternation of generation is present in

1.Sea-pen

2.Sea-fan

3.Obelia

4.Sea anemone

Which of the following is incorrect statement

1.Polyp produce medusae asexually

2.Medusae produce polyp sexually

3.Polyp produce medusae sexually

4.Obelia shows metagenesis

Which of the following is known as Portugese man of war?

1.Pennatula

2.Adamsia

3.Meandrina

4.Physalia

Which of the following  not started from Cnidarians?

1.Tissue level of Organisation

2.Radial symmetry

3.Diploblastic body plan

4.Presence of mesoderm

In which of the following form metamerism is present

1.Obelia

2.Hydra

3.Sea anemone

4.None of the above

Which of the following germinal layer is absent in Cnidarians

1.Ectoderm

2.Endoderm

3.Mesoderm

4.Both 2 and 3

Ctenophores are commonly known as

1.Sea walnuts

2.Comb jellies

3.Cnidarians

4.Both 1 and 2

Which of the following attribute is false about Ctenophores

1.Radial symmetry

2.Diploblastic

3.All germ layers are present

4.Tissue level of Organisation

Which of the following is well marked in Ctenophores?

1.Comb plates

2.Tentacles

3.Bioluminiscence

4.Diploblastic body plan

Which of the following is true about digestion of Ctenophores?

1.Extracellular digestion

2.Intracellular digestion

3.Both 1 and 2

4.Neither Intracellular nor Extracellular