Biology Ch 10 Class 12 Evolution





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Which of the following scientists contributed a lot to “modern synthetic theory of organic evolution:

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Consider the following statements about biological communities.

I. Their members share a common gene pool

II. The community remains stable even though some physical aspect of the environment may undergo a change

III. It consists of all the populations living in a particular area.

IV. A community interacts with a non-living environment and both function together to form an ecosystem

Which two of the above statements are true?

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Which factor decides what type of variation should be flourished and passed on to the next generations?

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Which condition can be explained by Lamarckism?

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On Galapagos island, among the birds, ____ caught much attention of Darwin in formulating his work, related to adaptations.

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Inheritance of acquired characteristics is based on:

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Most of the fossils are found in which of the following?

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There existed two varieties of female freshwater Mollusks in which some were streamlined and some had a high bulge. Over the generations, male freshwater Mollusks learned that high bulge favors more production of offspring. So they started preferring to mate with females having high bulge as compared to streamlined. Will this affect Hardy Weinberg Equilibrium in the population?

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The genetic change in a population caused by natural selection is called?

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Which statement is incorrect?

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The actual remains or traces of organisms that lived in ancident geological times

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The ultimate source of all changes is:

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Which animals support Darwin’s view of inheritance of desirable variations?

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Which of the following is a vestigial organ?

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In humans gill pouches have modified into

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Many scientists believe that one of the following is evolutionary origin(s) of animals, plants and fungi?

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Which of the following is not an evidence for evolution?

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Carolus Linnaeus was believer of

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What is in q2 Hardy Weinberg equilibrium?

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Consider the following statements about biological communities.

I. Their members share a common gene pool

II. The community remains stable even though some physical aspect of the environment may undergo a change

III. It consists of all the populations living in a particular area.

IV. A community interacts with a non-living environment and both function together to form an ecosystem

Which two of the above statements are true?

NTS 2014
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The process that has transformed life on earth from its earliest forms to vast diversity is?

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A group of interbreeding individuals belonging to a particular species and sharing a common geopraphic area is called

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According to the theory of natural selection, organisms produce:

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What was the source of hydrogen for first photosynthetic organisms?

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The following observations refer to evolution:

Inherited variations which are favored in a particular environment are passed on
There is a struggle for existence
Across time, inherited variations may accumulate causing gradual changes in the organism
Although populations tend to overproduce, they remain more or less constant in numbers from generation to generation
In what sequence should the statement be placed to support the Darwin theory of evolution?

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Change in frequency of alleles that occurs by chance Is called as:

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Flagella might have arisen through the ingestion of

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Which of the following theories or evolution can best explain the vestigial organs.

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Natural selection can amplify or diminish variations that are

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Adaptations that an organism acquires by its own actions are

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Mating with non-relatives is known as?

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A group of interbreeding individuals belonging to a particular species and sharing a common geopraphic area is called?

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Homology means

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Choose the correct combination:

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Which one of the following pairs represents an analogous feature?

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Which of the following concepts is attributed to Lamarck?

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Archaebacteria can survive at

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Neo-Darwinism has integrated discoveries and ideas from

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Whose theory of natural selection is essentially identical to Darwin’s theory?

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Adaptation of traits to better fill a niche is known as which of the following?

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______ occurs because natural selection gives some alleles a better chance of survival than others:

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The following observations refer to evolution:

I. Inherited variations which are ‘favoured’ in particular environments are passed on.

II. There is a struggle for existence.

III. In time, ‘favoured’ inherited variations may accumulate causing gradual changes in the organism.

IV. Although populations tend to overproduce, they remain more or less constant in numbers from generation to generation.

In what sequence should the statements be placed to support Darwin’s theory of evolution?

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During aristotle time, it was thought that

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The total aggregate of genes in a population at any one time is called population’s

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The organs which are similar in function but differ in structure are called:

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Genetic equilibrium is a:

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Lamarck is best known for his theory of:

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At what point are two populations descending from the same ancestral stock considered separate species?

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Theory of Lamarck was based on:

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Analogous organs show

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Evolutionary relationships amongst species are reflected in their:

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Prokaryotes are considered to be evolved

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Analogous organs show:

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Which scientist does not match his achievements

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Modification in the organization of the basic pentadactyl limb structure found in vertebrates provides good evidence for the principle of:

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Natural selection can amplify or diminish variations that are?

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According to the Hardy-Weinberg theorem, what will be the frequency of heterozygote when ‘p’ is 0.2?

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If allele frequency for a dominant allele is 0.4. What will be the number of heterogeneous individuals if the population is of 100 individuals with diploid traits.

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Important point/s of Lamarck’s theory

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The wings of birds and the forelegs of a horse are _____ structures.

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In the Hardy – Weinberg principle, p2 + 2pq + q2 = 1 . q2 represents the frequency of the:

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This theory says that “mitochondria and chloroplasts are, in effect, ancient bacteria which now live inside the larger cells”:

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Who developed a theory of natural selection essentially identical to Darwin’s

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Carolus Linnaeus was believer of which of the following?

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Which one is NOT a continuous trait?

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Most fossils are found in the

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Key point to Lamarck’s view about organic evolution is that every offspring

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The process that has transformed life on earth from its earliest forms to vast diversity is

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A group of populations that have the potential to interbreed in nature is

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Who developed a theory of natural selection essentially identical to Darwin’s?

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In the Hardy – Weinberg principle,p2 + 2pq + q2= ?

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