Animal Kingdom

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

1. Kangaroo, hedgehog, dolphin, Loris
2. Lion, bat, whale, ostrich
3. Platypus, penguin, bat, hippopotamus
4. Shrew, bat, cat, kiwi

Metameric segmentation is the characteristic of

1. Mollusca and Chordata
2. Platyhelminthes and Arthropoda
3. Echinodermata and Annelida
4. Annelida and Arthropoda

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

1. Porifera - Spongilla, Euplectella, Pennatula
2. Cnidaria - Bonellia, Physalia, Aurelia
3. Platyhelminthes - Planaria, Schistosoma, Enterobius
4. Mollusca - Loligo, Teredo, Octopus

Which one of the following has an open circulatory system?

1. Octopus
2. Pheretima
3. Periplaneta
4. Hirudinaria

In contrast to annelids the platyhelminthes show

1. absence of body cavity
2. bilateral symmetry
3. radial symmetry
4. presence of pseudocoel.

From the following statements select the wrong one

1. Prawn has two pairs of antennae.
2. Nematocysts are characteristic of the phylum Cnidaria.
3. Millipedes have two pairs of appendages in each segment of the body.
4. Animals belonging to phylum Porifera are marine and fresh water.

Which one of the following characters is not typical of the class Mammalia?

1. Thecodont dentition
2. Alveolar lungs
3. Ten pairs of cranial nerves
4. Seven cervical vertebrae

In Arthropoda, head and thorax are often fused to form cephalothorax, but in which one of the following classes, is the body divided into head, thorax and abdomen?

1. Insecta
2. Myriapoda
3. Crustacea
4. Arachnida and Crustacea

The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the Phylum

1. Annelida
2. Mollusca
3. Cnidaria
4. Echinodermata

One of the following is a very unique feature of the mammalian body

1. homeothermy
2. presence of diaphragm
3. four chambered heart
4. rib cage