Which one of the following categories of animals, is correctly described with no single exception in it?

• All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal)

• All bony fishes have four pairs of gills and an operculum on each side

• All sponges are marine and have collared cells

• All sponges are marine and have collared cells

Which of the following characteristics is mainly responsible for diversification of insects on land?

• Segmentation

• Bilateral symmetry

• Exoskeleton

• Exoskeleton

73.

Which of the following endoparasites of humans does show viviparity?

• Ancylostoma duodenale

• Enterobius vermicularis

• Trichinella spiralis

• Trichinella spiralis

Which of the following animals is not viviparous?

• Flying fox(bat)

• Elephant

• Platypus

• Platypus

Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?

• Chordata - possess a mouth provided with an upper and a lower jaw

• Chondrichthyes - possess cartilaginous endoskeleton

• Mammalia - give birth to young ones

• Mammalia - give birth to young ones

Uricotelic mode of passing out nitrogenous wastes is found in

• birds and annelids

• amphibians and reptiles

• insects and amphibians

• insects and amphibians

One very special feature in the earthworm pheretima is that

• the typhlosole greatly increases the effective absorption area of the digested food in the intestine

• the S- shaped setae embedded in the integument are the defensive weapons used against the enemies

• It has a long dorsal tubular heart

• It has a long dorsal tubular heart

In which one of the following the genus name, its tow characters and its class/ phylum are correctly matched?

• Genus	Two characters	Class/phylum
  Salaman dra	i).A tympanum represents ear	Amphibia

• Genus	Two characters	Class/phylum
  Pteropus	i)Skin possesses hair ii)Oviparous	Mammalia

• Genus	Two characters	Class/phylum
  Aurelia	i)Cnidoblas ii)Organ level of organization	Colenterata

• Genus	Two characters	Class/phylum
  Aurelia	i)Cnidoblas ii)Organ level of organization	Colenterata

Which one of the following statements is totally wrong about the occurrence of the notochord, while the other three are correct? 

• It is present only in larval tail in Ascidians

• It is replaced by a vertebral coloumn in adult frog

• It is absent throughout life in humans from the very beginning

• It is absent throughout life in humans from the very beginning

The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of 

• Taenia, a tapewarm

• Wuchereria, a filarial worm

• Rhizopus, a mould

• Rhizopus, a mould