Question # 1

Pre-chordates is another name used for

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Echinoderms

Protochordates

Cephalochordates

Hemichordates

Triploblastic, unsegmented, acoelomates exhibiting bilateral symmetry and reproducing both asexually and sexually, with some parasitic forms are included in

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Annelida

Arthropoda

Platyhelminthes

Cnidaria

Which of the following is a distinguishing character of sponges

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Tentacles

Ceoleteron

Choanocytes

Calcareous skeleton

Which of the following is true about mesoglea

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Acellular

Mesodermal

Cellular

Multicellular

Which one of following structures is formed from mesoderm?

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Intestinal lining

Muscles

Skin

Brain

The most common animal of phylum Aschelminthes is:

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Enterobuis vermicularis

Ascaris lumbricoides

Ancylostoma duodenale

Rhabditis

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

First invertebrate to develop a nervous system is

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Sponges

Cnidarians

Flat worms

Round worms

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

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Ostia

Osculum

Spicules

Medreporite

Platyhelminthes have

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Asymmetrical body

Radial symmetry

Bilateral symmetry

Diploblastic organization

Animals involved in the construction of corals are

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Polyps

Medusae

Gonozooids

None

Animals devoid of respiratory, excretory and circulatory organs are

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Tapeworms

Sponges

Earthworm

Live fluke

Which one of the following phylum is the example of coelomates

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Flatworms

Round worms

Segmented worms

Unsegmented worms

In earthworm, the surface responsible for the gaseous exchange is

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Skin

Gills

Body surface

Trachea

The only phylum included in Grade Radiata is:

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Porifera

Aschelminthes

Platyhelminthes

Cnidaria

Common housefly is involved in spread of all diseases except

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Hepatitis

Malaria

Dysentery

Cholera

Which of the following has chitinous cuticle in the exoskeleton

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Arthropoda

Porifera

Echinodermata

Annelida

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

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

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