Question # 1

The pairs of gills present in cyclostomata are

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5-7

10-12

6-14

4-5

Which of the following is not triploblastic

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Cnidaria

Arthropoda

Platyhelminthes

Aschelminthes

Phylum of asymmetrical animals is

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Nematoda

Platyhelminthes

Cnidaria

Porifera

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

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

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Cnidaria

Arthropoda

Aschelminthes

Platyhelminthes

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

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

It is not a germ layer

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Ectoderm

Endoderm

Blastoderm

Mesoderm

Pick up the most developed coelomates

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Echinoderms

Annelids

Chordates

Insects

Notochord is present throughout life in

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Urochordates

Chordates

Cephalochordates

Vertebrates

The cartilaginous fishes contain scales ….

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Placoid

Cycloid

Ganoid

Ctenoid

In earthworm, the surface responsible for the gaseous exchange is

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Skin

Gills

Body surface

Trachea

Parapodia are organs of locomotion in ……

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Leech

Planaria

Earthworm

Neries

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 of the following has chitinous cuticle in the exoskeleton

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Arthropoda

Porifera

Echinodermata

Annelida

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

Animals devoid of respiratory, excretory and circulatory organs are

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Tapeworms

Sponges

Earthworm

Live fluke

Radial symmetry is present in

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Adults of annelida

Adults of echinodermata

Adults of Cnidaria

Both B and C

Animals involved in the construction of corals are

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Polyps

Medusae

Gonozooids

None

Which of the following is a distinguishing character of sponges

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Tentacles

Ceoleteron

Choanocytes

Calcareous skeleton

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MDCAT Biology Chapter 6 Diversity among Animals Online Test MCQs With Answers

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