Question # 1

In earthworm, the surface responsible for the gaseous exchange is

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Skin

Gills

Body surface

Trachea

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

In deuterostomes mesoderm is derived from wall of developing

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Coelom

Heart

Archenteron

Blastopore

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 one of following structures is formed from mesoderm?

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Intestinal lining

Muscles

Skin

Brain

Animals devoid of respiratory, excretory and circulatory organs are

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Tapeworms

Sponges

Earthworm

Live fluke

Which of the following is a distinguishing character of sponges

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Tentacles

Ceoleteron

Choanocytes

Calcareous skeleton

Is is universally accepted by biologists that mammals have evolved from reptilian ancestors called …………

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Cotylosaurs

Dinosaurs

Cotylostomata

Amphibians

Which of the following is not triploblastic

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Cnidaria

Arthropoda

Platyhelminthes

Aschelminthes

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

Skeleton of echinoderms is originated from

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Ectoderm

Endoderm

Mesoderm

Epidermis

The only phylum included in Grade Radiata is:

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Porifera

Aschelminthes

Platyhelminthes

Cnidaria

Which of the following group of animals is a link between aquatic and terrestrial animals?

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Fish

Amphibians

Reptiles

Birds

Which one of the following phylum is the example of coelomates

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Flatworms

Round worms

Segmented worms

Unsegmented worms

Animals that have their body cavity filled with parenchyma are

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Acoelomates

Coelomates

Pseudocoelomates

Tunicates

The cartilaginous fishes contain scales ….

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Placoid

Cycloid

Ganoid

Ctenoid

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

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Arthropoda

Bivalvia

Gastropoda

Cephalopoda

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

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

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

Snails are the intermediate hosts of

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Fasciola hepatica

Schistoma

Taenia solium

Ancyclosoma duodenale

Which of the following has chitinous cuticle in the exoskeleton

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Arthropoda

Porifera

Echinodermata

Annelida

Parapodia are organs of locomotion in ……

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Leech

Planaria

Earthworm

Neries

Body of _____ consists of segments called proglottids which contains mainly sex organ

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Planaria

Fasciola

Ascaris

Tapeworm

Platyhelminthes have

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Asymmetrical body

Radial symmetry

Bilateral symmetry

Diploblastic organization

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

Which characteristic is common in both cnidarians and flatworms

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Digestive system with a single opening

Dorsoventrally flattened bodies

Radial symmetry

Flame cells

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