Which of the following are correctly matched with respect to their taxonomic classification?

1.	Centipede, millipede, spider, scorpion-Insecta
2.	House fly, butterfly, tsetse fly, silverfish-Insecta
3.	Spiny anteater, sea urchin, sea cucumber- Echinodermata
4.	Flying fish, cuttlefish, silverfish- Pisces

One of the representatives of the phylum Arthropoda is:

1. Silverfish

2. Pufferfish

3. Flying fish

4. Cuttlefish

In which one of the following the genus name, its two characters and its class/phylum are correctly matched? 

3. (c)
4. (d) 

Which one of the following is a matching pair of a body feature and the animal possessing it?

1. Post-anal-tail - Octopus

2. Ventral Central nervous system - Leech

3. Pharyngeal gills slits absent in embryo - Chamaeleon

4. Ventral heart - Scorpion

Annual migration does not occur in the case of:

1. Salmons

2. Siberian crane

3. Salamander

4. Arctic tern

Which one of the following has an open circulatory system?
1. Pheretima
2. Periplaneta
3. Hirudinaria
4. Octopus

Select the Taxon mentioned that represents both marine and freshwater species:

1. Echinoderms

2. Ctenophora

3. Cephalochordata

4. Cnidaria

Match the name of the animal (Column I), with one characteristic (Column II), and the phylum/class (Column III) to which it belongs: