Which of the following represents order of 'Horse'?

(1) Equidae

(2) Perissodactyla

(3) Caballus

(4) Ferus

Subtopic:  Study of Aves & Mammals |
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An important characteristic that hemichordates share with chordates is

(1) absence of notochord

(2) ventral tubular nerve cord

(3) pharynx with gill slits

(4) pharynx without gill slits

Subtopic:  Phylum Hemichordata | Phylum Chordata |
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Which among these is the correct combination of aquatic mammals?

(1) Seals, Dolphins, Sharks

(2) Dolphins, Seals, Trygon

(3) Whales, Dolphins, Seals

(4) Trygon, Whales, Seals

Subtopic:  Study of Aves & Mammals |
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In case of poriferans, the spongocoel is lined with flagellated cells called

(1) ostia

(2) oscula

(3) choanocytes

(4) mesenchymal cells

Subtopic:  Phylum Porifera |
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Choose the correct statements.

(1) All mammals are viviparous

(2) All cyclostomes do not possess jaws and paired fins

(3) All reptiles have a three-chambered heart

(4) All Pisces have gills covered by an operculum

Subtopic:  General Intro of Vertibrates & Agnatha |
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Which of the following characteristic features always holds true for the corresponding group of animals?

(1)

Viviparous

Mammalia

(2)

Possess a mouth with an upper and a lower jaw

Chordata

(3)   

3-chambered heart with one incompletely divided ventricle   

Reptilia

(4)

Cartilaginous – endoskeleton

Chondrichthyes

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
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Which one of the following characteristics is not shared by birds and mammals?

(1) Breathing using lungs

(2) Viviparity

(3) Warm blooded nature

(4) Ossified endoskeleton

Subtopic:  Study of Aves & Mammals |
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Which of the following features is not present in the phylum – Arthropoda?

(1) Metameric segmentation

(2) Parapodia

(3) Jointed appendages

(4) Chitinous exoskeleton

Subtopic:  Phylum Arthropoda |
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Which one of the following living organisms completely lacks a cell wall?

(1) Cyanobacteria

(2) Sea-fan (Gorgonia)

(3) Saccharomyces

(4) Blue-green algae

Subtopic:  Phylum Coelenterata |
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Planaria posses high capacity of

(1) metamorphosis

(2) regeneration

(3) alternation of generation

(4) bioluminescence

Subtopic:  Phylum Ctenophora & Platyhelminthes |
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