Question # 1

An organism of the lineage of animals in which the blastopore of the developing embryo becomes the anus, while a second opening becomes the mouth called:

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Triploblastic

Protostome

Diploblastic

Deuterostome

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

The most common animal of phylum Aschelminthes is:

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Enterobuis vermicularis

Ascaris lumbricoides

Ancylostoma duodenale

Rhabditis

Animals devoid of respiratory, excretory and circulatory organs are

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Tapeworms

Sponges

Earthworm

Live fluke

Pick up the most developed coelomates

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Echinoderms

Annelids

Chordates

Insects

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

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Fish

Amphibians

Reptiles

Birds

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

The cells absent in sponges are

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Chondrocytes

Pinacocytes

Choanocytes

Archeocytes

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

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

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

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Cnidaria

Arthropoda

Aschelminthes

Platyhelminthes

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 larva formed during the life cycle of Annelida is

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Glochidium larva

Bipinnaria larva

Trochophore larva

Tornaria larva

Animals involved in the construction of corals are

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Polyps

Medusae

Gonozooids

None

First invertebrate to develop a nervous system is

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Sponges

Cnidarians

Flat worms

Round worms

Platyhelminthes have

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Asymmetrical body

Radial symmetry

Bilateral symmetry

Diploblastic organization

Pre-chordates is another name used for

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Echinoderms

Protochordates

Cephalochordates

Hemichordates

Skeleton of echinoderms is originated from

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Ectoderm

Endoderm

Mesoderm

Epidermis

Parapodia are organs of locomotion in ……

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Leech

Planaria

Earthworm

Neries

Most of the vectors for spreading important human diseases belong to:

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Radiata

Acoelomates

Pseudocoelomates

Coelomates

Which one of the following phylum is the example of coelomates

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Flatworms

Round worms

Segmented worms

Unsegmented worms

Which one of following structures is formed from mesoderm?

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Intestinal lining

Muscles

Skin

Brain

The pairs of gills present in cyclostomata are

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5-7

10-12

6-14

4-5

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

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Arthropoda

Bivalvia

Gastropoda

Cephalopoda

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

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

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