Question # 1

Mammals become dominant in

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Paleozoic period

Mesozoic period

Coenozoic period

Proterozoic period

Pseudo coelom is characteristic.

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Nematoda

Mollusca

Annelida

Echinodermata

The body of animals which can be divided into two equal halves only in one plan is termed as

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Asymmetrical

Bilaterally symmetrical

Radically symmetrical

None of these

Hydra is the example of.

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Tentacular feeding

Fiter feeding

Pluid feeding

scraping feeding

Polypo and Medusae are examples of.

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Coelentrate

Nematoda

Porifera

Arthropoda

The phylum which is exclusively marine is

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Canidaria

proifera

Echinadermata

Annelida

A free swimming trochophore larva is produced during the life cycle of.

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Coelenterate

Porifera

Annelida

Arthropods

Animals that have their body cavity filled with parenchyma are called

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Acoelomates

Coelomates

Pseudocelomates

None of these

In presence of notochord is the character of

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arthopoda

Mollusea

Chordata

Nematoda

Coral reefs are mostly formed. of.

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Calcium carbonate

Silica

Chitin

Lignin

Mammals have only

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Right arotic arch

Left arotic arch

Both left and right arotic arches

No artic arch

Nephridia are excretory structures of.

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Sponges

Annelids

Arthropods

None of these

Corals produce hard exoskeleton formed of.

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NaCO3

CaCO3

NaOH

KCl

Neries belongs to class

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Polychaeta

Hirudinea

Oligocheaeta

Crustacea

Excretory organ in annelid are.

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Nephridia

Nephron

Flame cells

Malpighian tubule

The example of phylum Hemichordata is.

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Molgula

Amphioxus

Balanoglosus

Asierias

What is the true sequence of bones in the mammalianear.

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Malleus, incuse and stapes

Incus and stapes

Malleus and stapes

Stapes and malleus

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