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Which one of the following is found in chordates but not in non-chordates

A. Gills

B. Spiracles

C. Post anal tail

D. Chitious skeleton

Correct Answer :

C. Post anal tail


Related Questions

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Which of the following is not a true amphibian animal ?

A. Frog

B. Toad

C. Salamander

D. Tortoise

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The smallest unit of classification in animals is

A. variety

B. species

C. sub species

D. genus

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The group amniota includes

A. birds and mammals

B. birds and reptiles

C. reptiles and mammals

D. reptiles, birds and mammals

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The order insectivora of class mammalia includes

A. moles, shrews and hedgehogs

B. monkeys, apes and man

C. whales and dolphins

D. kangaroo, lions and wolves

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Birds and bats are good fliers. The bat differs from a bird in having

A. diaphragm

B. four-chambered heart

C. wings

D. small brain

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Egg laying mammals are found in

A. India

B. Australia

C. Africa

D. South America

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Which of the following is a correct hierar-chial sequence in systematics ?

A. Species, genus, family, order, class, phylum

B. Species, genus, order, family, class, phylum

C. genus, species, order, family, class, phylum

D. genus, family, order, class, species, phylum

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Branchiostonta is an example of

A. Cephalochordata

B. Agnatha

C. Urochordata

D. Gnathostomata

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Flying bats are included under which order of class Mammalia ?

A. Cetacea

B. Chiroptera

C. lnsectivora

D. Lagomorpha

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Which of the following is not a correct taxonomic match ?

A. Platyhelminthessolenocytes

B. Molluscametamerism

C. Mammaliadiaphragm

D. Chordatadorsal tubular nerve cord

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Which one of the following is a metatherian mammal ?

A. Hystrin

B. Tachyglossns

C. Diadelphyes

D. None of these

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Which of the following animals has a diaphragm between the thorax and abdomen ?

A. Frog

B. Lizard

C. Pigeon

D. Whale

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Chief distinguishing features of mammals are

A. hairy skin and ovipary

B. hairy skin and mammary glands

C. mammary glands and teeth

D. pinnae and teeth

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The concept of homology can be applied to

A. gross structures of the body

B. physiological mechanisms

C. biochemical similarities

D. all of these

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Which one of the animals does not have a segmented body ?

A. Shipworm

B. Glowworm

C. Earthworm

D. Tapeworm

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4

Duck bill platypus is

A. primitive burrowing egg laying mammal

B. advanced egg laying reptile

C. primitive egg laying reptile

D. primitive aquatic egg laying animal

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4

Which of the sponge is given as a gift in Japan?

A. Hyalonema

B. Euplectalla

C. Tethya

D. Leucosolenia

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Spider is not included under class insects because of

A. absence of walking legs

B. absence of mandibles

C. absence of wings

D. presence of walking legs

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4

Archaeopteryx called a connecting link, carried the characters, of

A. reptile and bird

B. reptile and mammals

C. fish and amphibia

D. reptile and amphibia

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Which of the following is not a part of true body cavity ?

A. Pleural cavity

B. Pericardial cavity

C. Peritoneal cavity

D. The cavity inside the stomach and intestine

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4

The generic name of peacock is

A. Passer domesticus

B. Pavo cristatus

C. Psittacula krameri

D. None of these

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Pharyngeal gill slits are found in

A. flying fish

B. silver fish

C. crayfish

D. cuttlefish

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Honey-bees belong to the phylum arthropoda and class

A. insecta

B. oligochaeta

C. arachnida

D. crustace

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Sea Stick refers to group

A. porifera

B. coelentrata

C. annelida

D. mollusca

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Most important characteristic of the mammal is the presence of

A. pinnae

B. four-chambered heart

C. movement on two limbs only

D. diaphragm

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4

Viviparous animal is

A. shark

B. mud puppy

C. bony fish

D. fish

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Which is the common character between all mammals ?

A. They are viviparous

B. They are herbivores

C. They are carnivores

D. They have 7 cervical vertebrae

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A cuttle fish belongs to

A. teleostei

B. mollusca

C. pisces

D. echinodermata

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Canal system is characteristic of

A. hydra

B. sponge

C. sea anemone

D. sea urchin

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The most highly advanced character in reptilia is the presence of

A. four-chambered heart

B. shelled eggs

C. thecodont dentition

D. powerful jaws