Question # 1

The spinny skinned animals are included iin.

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Porifere

echinodermata

Mollusca

Annelida

Neries belongs to class

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Polychaeta

Hirudinea

Oligocheaeta

Crustacea

The skeleton of Athropds is made of

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Silica

Chitin

Calcium carbonate

Both a and c

The excretory system of flatworms is composed of.

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Nephron

Nephridia

Flame cells

Ganglia

The largest invertebrate animal is.

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dog fish

Glant squid

Octopus

Cuttle fish

Trypanosoma causes the disease known as

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Malaria

Sleeping sickness

Diarrhea

None of these

Animal of which phylum have developed bilateral symmetry in their larvae and radial symmetry in adults.

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Nematoda

Annelida

Echinodermata

Mollusca

Pseudocoelom is non-homologous to true coelom because

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It is not lined by coelomic epithelium

It has no relation with reproductive and excretory organs

It develops from blastocoel

All of the above

In arthropods, blood is colorless, as it is without

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Chlorophyll

Hamoglobin

Hemocyanin

Haemoiry thrin

Scientific name of Planaria is.

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Taenlasolium

Fasciola hepatica

Dugesia

Schistosoma

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

Loligo is an animal of phylum Mollusca which is commonly called.

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slug

Garden snail

Squid

Oyster

All 'Flat worms' belong to phylum

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Annelida

Platyhelminthes

Nematoda

Arthropoda

Excretory system in arthropods is composed of.

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Kidney

Nephridia

Malpighian tubules

Flame cells

Coral reefs are mostly formed. of.

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Calcium carbonate

Silica

Chitin

Lignin

In annelids the organs for excretion are

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Flame cells

Nephridia

Protonephridia

Kidneys

In sponges the food enters the spongocoel cavity called.

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Globules

Gemmules

Endosperm

Ostia

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