All mammals without any exception are characterised by

1.	viviparity and biconcave red blood cells
2.	extra-abdominal testes and a four chambered heart
3.	heterodont teeth and 12 pairs of cranial nerves
4.	a muscular diaphragm and milk producing glands

A lizard-like member of reptilia is sitting on a tree with its tail coiled around a twig. This animal could be

Which of the following does not come under the Class Mammals?

(1) Flying fox

(2) Hedgehog

(3) Manatee

(4) Lamprey

During the life-cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively

(1) redia and miracidium

(2) cercaria and redia

(3) metacercaria and cercaria

(4) miracidium and metacercaria

Delicate hair-like feathers which remain sparsely distributed over the body are

(1) coverts

(2) filoplumes

(3) plumules

(4) remiges.

Which one feature is common to leech, cockroach and scorpion?

(1) Nephridia

(2) Ventral nerve cord

(3) Cephalization

(4) Antennae

National bird of India is

1. Psittacula

2. Passer domesticus

3. Pavo cristatus

4. Parakeet

Which of the following have porous body and have Cellular Level of Organization?

(1) Aurelia and Obelia

(2) Adamsia and Euplectella

(3) Leucosolenia and Spongilla

(4) Sycon and Hydra

Which animal has the longest gestation period?

(1) Shark

(2) Walrus

(3) Elephant

(4) Dog

Kingdom Animalia is characterised by

(1) direct dependence on autotrophs

(2) indirect dependence on autotrophs

(3) absence of chlorophyll

(4) absence of cell wall