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

(1) Hemidactylus showing sexual dimorphism

(2) Varanus showing mimicry

(3) garden lizard (Calotes) showing camouflage

(4) Chamaeleon showing protective colouration

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.

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 of the following is a correct match?

(1) Frog — External ears

(2) Earthworm — Muscular gizzard, typhlosole

(3) Human — Fat globule, 10 pairs of cranial nerves

(4) Cockroach — Chilopoda

One of the world's most poisonous fish toxins is released by

(1) clown fish

(2) sword fish

(3) eel fish

(4) puffer fish

Stinging capsules (nematocysts) are found in

(1) wasp and honeybee

(2) scorpion and cobra

(3) sea pen and sea fan

(4) cactus and Venus flytrap