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

Which of the following pairs are correctly matched?

(1) A, C and D

(2) B, C and D

(3) Only A and D

(4) Only A and B

What is true about Nereis, Scorpion, Cockroach and Silver fish?

(1) They all have jointed paired appendages

(2) They all possess dorsal heart

(3) None of them is aquatic

(4) They all belong to the same phylum

Which one of the following is not a living fossil?

(1) King crab

(2) Sphenodon

(3) Archaeopteryx

(4) Peripatus

Which one of the following is a matching set of a phylum and its three examples?

1. Cnidaria − Bonellia, Physalia, Aurelia

2. Platyhelminthes −  Planaria, Schistosoma, Enterobius

3. Mollusca − Loligo, Teredo, Octopus

4. Porifera − Spongilla, Euplectella, pennatula

Metameric segmentation is the characteristic of

(1) Platyhelminthes and Arthropoda

(2) Echinodermata and Annelida

(3) Annelida and Arthropoda

(4) Mollusca and Chordata

Biradial symmetry and lack of cnidoblasts are the characteristics of :

(1) Starfish and sea anemone

(2) Ctenoplana and Beroe

(3) Aurelia and Paramecium

(4) Hydra and starfish

In which one of the following sets of animals do all the four give birth to young ones?

(1) Lion, bat, whale, ostrich

(2) Platypus, penguin, bat, hippopotamus

(3) Shrew, bat, cat, kiwi

(4) Kangaroo, hedgehog, dolphin, Loris

Two common characters found in centipede, cockroach and crab are:

(1) compound eyes and anal cerci

(2) jointed legs and chitinous exoskeleton

(3) green gland and tracheae

(4) book lungs and antennae

A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is

(1) Eptatretus

(2) Myxine

(3) Neomyxine

(4) Petromyzon