Biology Ch 10 Class 12 Evolution





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Lamarck is best known for his theory of:

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

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Which scientist does not match his achievements

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Inheritance of acquired characteristics is based on:

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Neo-Darwinism has integrated discoveries and ideas from

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Which of the following is not an evidence for evolution?

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Choose the correct combination:

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

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

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Which one of the following pairs represents an analogous feature?

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Flagella might have arisen through the ingestion of

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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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Most fossils are found in the

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Adaptations that an organism acquires by its own actions are

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

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Important point/s of Lamarck’s theory

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

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The ultimate source of all changes is:

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Mating with non-relatives is known as?

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

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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 of the following concepts is attributed to Lamarck?

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

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According to the theory of natural selection, organisms produce:

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

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

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Carolus Linnaeus was believer of which of the following?

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

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

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

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Prokaryotes are considered to be evolved

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

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Natural selection can amplify or diminish variations that are?

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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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Theory of Lamarck was based on:

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Carolus Linnaeus was believer of

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Analogous organs show

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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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Evolutionary relationships amongst species are reflected in their:

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

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What was the source of hydrogen for first photosynthetic organisms?

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

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

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

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

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During aristotle time, it was thought that

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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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Archaebacteria can survive at

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Analogous organs show:

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

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Homology means

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In humans gill pouches have modified into

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

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

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What is in q2 Hardy Weinberg equilibrium?

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Which statement is incorrect?

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

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Which of the following is a vestigial organ?

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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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Which condition can be explained by Lamarckism?

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

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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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Genetic equilibrium is a:

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Which one is NOT a continuous trait?

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Natural selection can amplify or diminish variations that are

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