Question # 1

A regular arrangement of microtubules called --------- underlies the plasma membrane of many protozoa

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Pellicle

mesosomes

peroxisomes

Both A and B are correct

The scientific name of the common pinworm is

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Ascaris lumbricoides.

Enterobius vermicularis

Trichinella spiralis.

Wuchereria bancrofti

The approach which makes hypothesis of geneological relationships among monophyletic groups of organisms is

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evolutionary systematic

Phylogenetic systematic

Numarical taxonomy

Both A and C

A distinctive feature of members of the class Polychaeta is

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Parapodia.

Clitellum.

Annuli.

Absence of setae.

Radiolarians and heliozoans are members of

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Phylum Apicomplexa

Phylum Sarcomastigophora

Phylum Acetospora

Phylum Ciliophora

Elephantiasis is caused by filarial worms (i.e., Wuchereia spp.).

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True

False

none of the above

Ascaris lumbricoides is commonly known as the giant intestinal roundworm of humans.

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True

False

none of the above

--------------- is a developmental process that occurs in gastropods and results in a 180 degree counterclockwise twisting of the visceral mass and mantle cavity

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Gastrulation

Epiboly

Involution

Torsion

Oligochaetes are

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Monoecious.

Dioecious.

Monoecious dioecious.

asexual.

Members of the class Monoplacophora are wormlike molluscs that lack a shell, crystalline style, and foot; they live in vertical burrows on the deep-sea floor.

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True

False

None of Above

Earthworms belong to the annelid subclass

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Hirudinea.

Chaetognatha.

Polychaeta.

Oligochaeta.

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

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horsehair

Gordian

round

both a and b are correct

------------ gave rise to the kingdom protista

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Viruses

Archaea

bacteria

None of above

The aschelminths are seven phyla grouped only for convenience.

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True

False

none of the above

Which one is a member of class zoomastigophorea?

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Trichonympha

Trypanosoma

Paramyxa

Giardia

The majority of rotifers inhabit freshwaters

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True

False

none of the above

In phytomastigophorean each chloroplast has a structure -------------- which stores and synthesizes polysaccharides.

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Stigma

Pyrenoid

Euglenoid

None of above

Water exits the mantle cavity of a bivalve through the ------------ and the excurrent opening

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water tube

incurrent opening

suprabranchial chamber

pericardial cavity

The absence of a shell in the aplacophora is a primitive character in the phylum Mollusca

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True

False

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.

Ctenophorans and Anthozoans lie in

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Bilateral symmetry

Radial Symmetry

Asymmetry

Pentaradial symmetry

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