Question # 1

Features of most complex animals are

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Triploblastic with true coelom

Triploblastic with pseudocoelom

Triploblastic with bilateral symmetry

Triploblastic with radial symmetry

Protostomes and deuterostomes do not differ in

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Type of cleavage

Origin of mouth and anus

Number of germ layers

Mode of coelom formation

Which of the following is a distinguishing character of sponges

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Tentacles

Ceoleteron

Choanocytes

Calcareous skeleton

A group of animals with distinct germinal layers in adult stage are grouped in

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Cnidaria

Arthropoda

Aschelminthes

Platyhelminthes

Platyhelminthes have

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Asymmetrical body

Radial symmetry

Bilateral symmetry

Diploblastic organization

Which of the following is true about mesoglea

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Acellular

Mesodermal

Cellular

Multicellular

Which one of the following phylum is the example of coelomates

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Flatworms

Round worms

Segmented worms

Unsegmented worms

It is not a germ layer

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Ectoderm

Endoderm

Blastoderm

Mesoderm

In deuterostomes mesoderm is derived from wall of developing

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Coelom

Heart

Archenteron

Blastopore

The pore by which the water leaves the body of sponges is called

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Ostia

Osculum

Spicules

Medreporite

The most common animal of phylum Aschelminthes is:

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Enterobuis vermicularis

Ascaris lumbricoides

Ancylostoma duodenale

Rhabditis

It is an animal, but it does not have nerve or muscle tissue. It is neither diploblastic nor triploblastic. It is probably a

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Flatworm

Nematode

Cnidarian

Sponge

In earthworm, the surface responsible for the gaseous exchange is

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Skin

Gills

Body surface

Trachea

Animals devoid of respiratory, excretory and circulatory organs are

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Tapeworms

Sponges

Earthworm

Live fluke

Syrinx produces voice in birds. It is located

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In voice box

Near origin of bronchi

At the upper end of trachea

Inside lungs

Animals involved in the construction of corals are

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Polyps

Medusae

Gonozooids

None

The body of a Hydra can be divided in two equal halves vertically in

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One plane only

Two planes

Three planes

Any plane

Which of the following is not triploblastic

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Cnidaria

Arthropoda

Platyhelminthes

Aschelminthes

The larva formed during the life cycle of Annelida is

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Glochidium larva

Bipinnaria larva

Trochophore larva

Tornaria larva

Highest degree of regeneration is present in sponges because of

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Undifferentiated cells

Simplest organization

Ability to reproduce

Absence of germ layers

Phylum of asymmetrical animals is

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Nematoda

Platyhelminthes

Cnidaria

Porifera

The pairs of gills present in cyclostomata are

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5-7

10-12

6-14

4-5

Vector for spread of African sleeping sickness is

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Anopheles

Commonhouse fly

Tse-tse fly

Honey bee

First invertebrate to develop a nervous system is

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Sponges

Cnidarians

Flat worms

Round worms

Common housefly is involved in spread of all diseases except

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Hepatitis

Malaria

Dysentery

Cholera

Circulatory system is open type in all of the following, EXCEPT

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Arthropoda

Bivalvia

Gastropoda

Cephalopoda

Radial symmetry is present in

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Adults of annelida

Adults of echinodermata

Adults of Cnidaria

Both B and C

Snails are the intermediate hosts of

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Fasciola hepatica

Schistoma

Taenia solium

Ancyclosoma duodenale

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