Which of the following is true about Ctenophores?

1.Reproduction takes place by sexual means only

2.Fertilisation is external

3.Indirect development

4.All of these

Pleurobrachia is

1.Hermaphrodite

2.Dioecious

3.Bisexual

4.Both 1 and 3

Which of the following is common in Cnidarians and Ctenophora

1.Digestion is both intracellular and extracellular

2.Cnidoblast

3.Only sexual means of reproduction present

4.Metagenesis

Which is not correct about Ctenophora

1.Exclusive marine

2.Comb plates are present

3.Bioluminescent organism

4.Internal fertilisation present

Which is not true for Ctenophora

1.Mesoglea is absent

2.Bilateral symmetry

3.Triploblastic

4.All of the above

Which of the following attribute started from Platyhelminthes

1.Organ level of organisation

2.Coelom

3.Segmentation

4.Closed circulatory system

Which is true for flatworms?

1.Bilaterally symmetrical

2.Triploblastic body plan

3.Acoelomate animals

4.All of these

Members of the Platyhelminthes are called Flatworms because of

1.Triploblastic body plan

2.Bilateral symmetry

3.Organ level of organisation

4.Flattened body

Which of the following helps in excretion and osmoregulation in Flatworms

1.Flame cells

2.Nephridia

3.Malphigian tubules

4.Green glands

Which of the following flatworm is having high regeneration capacity?

1.Hydra

2.Tapeworm

3.Liverfluke

4.Planaria