Question # 1

The scientist who describe a system of classification that distinguished between kingdoms according to cellular organization and mode of nutrition was

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R. M. Kristensen

Carolus Linnaeus

Rebert II. Whittaker

None of above

Most polychaetes are

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Monoecious.

Dioecious.

Protandric.

Asexual.

Members of which of the following mollusc classes would be characterized by a reduced head, a mantle that surrounds the entire body and a tusk-shaped shell?

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Scaphopoda

Bivalvia

Polyplacophora

Gastropoda

Polymorphism is characteristic of phylum

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phylum Nematoda

phylum Annelida

phylum Cnidaria

None of above

Process during which aschelminths shed their cuticle is called

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moltin (g)

ecdysis

eutely.

both a and b are correct.

The main propulsive structure(s) in the circulatory system of an earthworm is (are)

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Hearts

Dorsal and ventral blood vessels

Seminal vesicles

The typhlosole.

------------- harbours the sexual stages of the parasite

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Intermediate host

Definitive host

None of above

Most marine protozoa have solute concentration ------------ to that of their environment

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Hypertonic

Hypotonic

similar

A ------------- is a mucoid mass that extends to the stomach of gastropods. It contains trapped food particles and is rotated by cilia

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Protostyle

Umbo

Crystalline style

Gastric shield

Number of the phylum Nematomorpha are commonly called the ------------- worms.

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horsehair

Gordian

round

both a and b are correct

Which of the following is not true with respect to nematode reproduction?

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Most nematodes are dioecious

Most nematodes are dimorphic

Males are larger than the females

Gonads lie free in the pseudocoelom.

Which one of the following do not lie in phylum ciliophora?

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Paramyxa

Vorticella

Paramecium

Balantidium

Oligochaetes are

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Monoecious.

Dioecious.

Monoecious dioecious.

asexual.

Radiolarians and heliozoans are members of

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Phylum Apicomplexa

Phylum Sarcomastigophora

Phylum Acetospora

Phylum Ciliophora

Scientific name of fish tape worm is

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Clonorchis sinensis

Schistosoma

Diphyllobothrium latum

Fasciola hepatica

The arrangement of structures in fives around a radial animal is called

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Bilateral symmetry

Radial Symmetry

Pentaradial Symmetry

Asymmetr

Tsetse files are ------------- host for Trypanosoma brucei, causing sleeping sickness to humans

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Intermediate

Primary host

Definitive host

Both A and C are correct

Members of which of the following mollusc classed would be characterized by a shell consisting of 8 plates?

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Aplacophora

Polyplacophora

Monoplacophora

Cephalopoda

Which of the following is a distinct feature that occurs in all pseudocoelomate phyla?

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pseudocoelom

adhesive glands

cuticle

none of the above

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