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What is the correct answer?

4

The diploid number of chromosome in Chimpanzee, Gorilla and Orangutan is

A. 2n = 44

B. 2n = 46

C. 2n = 48

D. none of these

Correct Answer :

C. 2n = 48


Related Questions

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4

Fossil Archaeopteryx was discovered and preserved as

A. a petrified specimen

B. a mineralised specimen

C. a mould

D. embedded in amber

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4

Which of these does not play a role in evolution ?

A. Mutation

B. Polyploidy

C. Natural selection

D. Acquired characters

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Some of the important evidences of organic evolution are

A. occurrence of homologous and vestigeal organs

B. occurrence of analogous and vestigial organs

C. occurrence of homologous and analogous organs

D. occurrence of analogous oragans only

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4

Peking man is known as

A. Homo sapiens

B. Pithecanthropus

C. Sinanthropus

D. None of these

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4

We use the term hybrid breakdown when the

A. offspring of hybrids are inviable or sterile

B. a hybrid zygote is formed but it fails to develop

C. hybrid adults fail to produce functional gametes

D. sperms and ova of different species of animals are unable to fuse

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4

Amphibians appeared and became dominant in the

A. Mesozoic era

B. Coenozoic era

C. Palaeozoic era

D. None of these

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4

The idea of spontaneous generation is essentially correct in regard to

A. origin of life

B. evolution

C. mutations

D. embryology

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Survival due to geographic isolation is best exemplified by mammalian fauna of

A. Oriental region

B. Ethiopian region

C. Australian region

D. Palaearctic region

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4

The resemblance between the south American llama and the African camel indicates a common ancestry. This is

A. homological evidence for evolution

B. palaentological evidence for evolution

C. biogeographic evidence for evolution

D. none of these

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4

Pangenesis theory was given by

A. Charles Darwin

B. Lamarck

C. Wsismann

D. Becker

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The first life on earth came in water and evidences indicate that life originated in one of the following eras :

A. Paleozoic

B. Mesozoic

C. Cenozic

D. Proterzoic

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4

The age of a fossil may be determined most accurately

A. by comparing it to living similar forms

B. by radioactive dating

C. by rate of erosion of the strata

D. from the depth of strata at which it is found

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4

A connecting link between Annelids and Arthropods is

A. Peripatus

B. Palaemon

C. Limulus

D. Heteronereis

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4

Human beings living in different geographical areas and under different environmental conditions are kept under one species because

A. they show adaptive variations to their environment

B. they share the common karyotype

C. they can freely interbreed and share a common gene pool

D. their features are different yet they are similar essentially

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An animal is more likely to be preserved as a fossil if it contains large quantities of

A. cartilage and bone

B. proteins

C. inorganic materials

D. keratin materials

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The concept of use and disuse of organs was given by

A. Darwin

B. Wallace

C. Mendel

D. Lamarck

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Doubis in 1891 found the fossil of Java ape man. It is

A. Sinanthropus pekinensis

B. Homoerectus

C. Homo rhodesiensis

D. Homo spisaens

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The book "Origin of Species" was written by Charles Darwin in

A. 1859

B. 1885

C. 1883

D. 1897

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The earliest ancestor of horse from early Eocene period is

A. miobibbus

B. eohippus

C. merychippus

D. pliohippus

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Fossilisation occurs where

A. animals are destroyed by environment

B. animals are destroyed by scavangers

C. animals are burried by natural " processes

D. organisms are burried and preserved by natural processes

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4

Fire was first used for protection and cooking by

A. Java man

B. Neanderthal man

C. Peking man

D. Cromagnon man

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Darwin proposed his theory of natural selection on the basis of

A. Mutation

B. Environmental factors

C. Lama's theory

D. Chromosomal aberrations

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Along with reduction in the number of toes in the modern horse, the other most significant evolutionary change is

A. increase in the size of eyes

B. increase in the size of brain

C. straightening of back

D. change in dentition from browsing to grazing

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4

Which animals dominated in Paleozoic era ?

A. Fishes

B. Amphibians

C. Reptiles

D. Birds

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An example of analogy is

A. wings of a bird and butterfly

B. wings of pigeon and bat

C. limbs of horse and man

D. paddles of dolphin and fins of a fish

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Role of isolation in evolution is

A. differentiation of species

B. maintenance of species

C. evolutionary divergence

D. extermination of species

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Ontogeny recapitulates phylogeny is the statement relating to

A. morphology

B. physiology

C. taxonomy

D. embryology

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The first mammal arose

A. after the extinction of dinosaurs

B. before the origin of dinosaurs

C. along with dinosaurs

D. from the dinosaurs

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4

The diploid number of chromosome in Chimpanzee, Gorilla and Orangutan is

A. 2n = 44

B. 2n = 46

C. 2n = 48

D. none of these

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4

A kind of mimicry which presumably works as a double insurance is

A. batesian mimicry

B. mullerian mimicry

C. warning colouration

D. concealing colouration