Chondrichthyes is characterised by:

1. placoid scale

2. ventral mouth

3. ctenoid scale and ventral mouth

4. placoid scale and ventral mouth

Secondary body cavity with segmented mesodermal lining is called:

1. haemocoel

2. neurocoele

3. true coelom

4. pseudocoelom

One animal that does not perform locomotion is:

1. Sycon

2. Nereis

3. Sepia

4. Euglena

The scientific name of gharial is:

1. Naja bungarus

2. Gaviais gangeticus

3. Hemidactylus flavivridis

4. None of the above

Which of the given option is correct regarding the statements? 

1. I wrong, II correct

2. I correct, II wrong

3. Both I and II are wrong

4. Both are correct

In which of the following haemocyanin pigment is found?

1. Lower invertebrates

2. Echinodermata

3. Insecta

4. Annelida

Which of the following cells in earthworms play a role similar to the liver in vertebrates?

1. Amoebocytes

2. Mucocytes

3. Chloragogen cells

4. epidermal cells

Match the following and select the correct option. 

1. A-3 B-5 C-2 D-1 E-4

2. A-3 B-1 C-5 D-2 E-4

3. A-1 B-2 C-3 D-4 E-5

4. A-2 B-3 C-4 D-1 E-5

Chondrichthyes is characterised by:

1. placoid scale

2. placoid scale and ventral mouth

3. Ventral mouth

4. ctenoid scale and ventral