Question # 1

The annelid class whose members are mostly marine is

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Hirudinea.

Oligochaeta.

Polychaeta.

Clitellata.

A specialized region analogous to mouth called cytopharynx is present in group

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Polycheate

Ctenophora

Protista

Porifera

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

Oligochaetes are

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Monoecious.

Dioecious.

Monoecious dioecious.

asexual.

The major feature which unify aschelminths is

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nervous system.

muscular system.

excretory system.

pseudocoelom.

Triploblastic is the characteristic of phylum

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Nematoda

Nemerteans

Platyhelminths

Annelida

All of the following mollusc characters would be found in a member of the class Bivalvia except one. Select the exception.

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Visceral mass

head-foot

mantle cavity

radula

The molluscs are most closely related to the

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Annelids

Enhinoderms

Arthropods.

Chordates

Phylum Rotifera consist of --------- classes.

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two

three

four

five

Which of the following is not a common feature of aschelminth?

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incomplete digestive tract

a muscular pharynx

constant cell numbers (eutely)

adhesive glands

A distinctive feature of members of the class Polychaeta is

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Parapodia.

Clitellum.

Annuli.

Absence of setae.

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 triploblastic animals have an

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tissue system level of organization

colonial level of organization

organ system level of organization

both A and B are correct

A distinctive feature of members of the subclass Hirudinea is

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Parapodia.

Tentacles.

Anterior and Posterior suckers.

Palps.

All of the following are characteristics of the phylum nematoda except?

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triploblastic, bilateral, vermiform

cuticles are not shed

complete digestive tract with a mouth surrounded by lips bearing sense organs

body wall has only longitudinal

All the following are unique to the molluscs except one. Select the exception.

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mantle

shell

visceral mass

head-foot

A mosquito is necessary for development of Trichinella spiralis

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True

False

none of the above

The excretory product in protozoa is primarily

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Urea

Ammonia

Uric acid

None of these

------------ depict a sequence in the origion of derived characters

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Cladogram

Monogram

Phylogenetic tree

None of above

Earthworms belong to the annelid subclass

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Hirudinea.

Chaetognatha.

Polychaeta.

Oligochaeta.

Subkingdom protozoa consist of --------- separate phyla within the kingdom protista.

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Eight

Six

Five

Seven

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