Animal Kingdom

What is true about Nereis, scorpion, cockroach and silverfish?

1. They all possess dorsal heart.
2. None of them is aquatic.
3. They all belong to the same phylum.
4. They all have jointed paired appendages.

Biradial symmetry and lack of cnidoblasts are the characteristic of

1. Hydra and starfish
2. starfish and sea anemone
3. Ctenoplana and Beroe
4. Aurelia and Paramecium

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

1. book lungs and antennae
2. compound eyes and anal cerci
3. jointed legs and chitinous exoskeleton
4. green gland and tracheae

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