Question # 1

In earthworm, the surface responsible for the gaseous exchange is

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Skin

Gills

Body surface

Trachea

Notochord is present throughout life in

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Urochordates

Chordates

Cephalochordates

Vertebrates

Pre-chordates is another name used for

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Echinoderms

Protochordates

Cephalochordates

Hemichordates

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

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Cotylosaurs

Dinosaurs

Cotylostomata

Amphibians

Parapodia are organs of locomotion in ……

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Leech

Planaria

Earthworm

Neries

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

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

Which of the following is not triploblastic

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Cnidaria

Arthropoda

Platyhelminthes

Aschelminthes

Radial symmetry is present in

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Adults of annelida

Adults of echinodermata

Adults of Cnidaria

Both B and C

Which of the following is true about mesoglea

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Acellular

Mesodermal

Cellular

Multicellular

Skeleton of echinoderms is originated from

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Ectoderm

Endoderm

Mesoderm

Epidermis

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 is a distinguishing character of sponges

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Tentacles

Ceoleteron

Choanocytes

Calcareous skeleton

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

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Arthropoda

Bivalvia

Gastropoda

Cephalopoda

Phylum of asymmetrical animals is

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Nematoda

Platyhelminthes

Cnidaria

Porifera

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

The pairs of gills present in cyclostomata are

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5-7

10-12

6-14

4-5

The cells absent in sponges are

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Chondrocytes

Pinacocytes

Choanocytes

Archeocytes

Vector for spread of African sleeping sickness is

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Anopheles

Commonhouse fly

Tse-tse fly

Honey bee

Pick up the most developed coelomates

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Echinoderms

Annelids

Chordates

Insects

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

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