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Evolution

689 Questions Start Allen Test
All Exams Allen Errorless
Q601 Allen ANALYTICAL QUESTIONS MCQ
One of the important consequences of geographical isolation is :-
A.
no change in the isolated fauna
B.
preventing Speciation
C.
speciation through reproductive isolation
D.
random creation of new species
Q602 Allen ANALYTICAL QUESTIONS MCQ
Among the human ancestors the brain size was more than 1000 CC in: -
A.
Homo neanderthalensis
B.
Homo erectus
C.
Ramapithecus
D.
Homo habilis
Q603 Allen ANALYTICAL QUESTIONS MCQ
Two plants can be conclusively said to belong to the same species if they: -
A.
can reproduce freely with each other and form seeds.
B.
have more than 90 percent similar genes.
C.
look similar and possess identical secondary metabolites.
D.
have same number of chromosomes.
Q604 Allen ANALYTICAL QUESTIONS MCQ
The Finches of Galapagos islands provide an evidence in favour of: -
A.
Special Creation
B.
Evolution due to Mutation
C.
Retrogressive Evolution
D.
Biogeographical Evolution
Q605 Allen ANALYTICAL QUESTIONS MCQ
What is common to whale, seal and shark :-
A.
Seasonal migration
B.
Thick subcutaneous fat
C.
Convergent evolution
D.
Homoiothermy
Q606 Allen ANALYTICAL QUESTIONS MCQ
Adaptive radiation refers to: -
A.
Adaptations due to Geographical isolation.
B.
Evolution of different species from a common ancestor.
C.
Migration of members of a species to different geographical areas.
D.
Power of adaptation in an individual to a variety of environments.
Q607 Allen ANALYTICAL QUESTIONS MCQ
When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed :-
A.
Divergent evolution
B.
Microevolution
C.
Co-evolution
D.
Convergent evolution
Q608 Allen ANALYTICAL QUESTIONS MCQ
The concept of chemical evolution is based on:
A.
Crystallization of chemicals
B.
Interaction of water, air and clay under intense heat
C.
Effect of solar radiation on chemicals
D.
Possible origin of life by combination of chemicals under suitable environmental conditions
Q609 Allen ANALYTICAL QUESTIONS MCQ
Industrial melanism as observed in peppered moth proves that:
A.
The true black melanic forms arise by a recurring random mutation.
B.
The melanic form of the moth has no selective advantage over lighter form in industrial area.
C.
The lighter-form moth has no selective advantage either in polluted industrial area or non-polluted area.
D.
Melanism is pollution-generated feature.
Q610 Allen ANALYTICAL QUESTIONS MCQ
Which one of the following statements is correct: -
A.
Stem cells are specialized cells
B.
There is no evidence of the existence of gills during embryogenesis of mammals
C.
All plant and animal cells are totipotent
D.
Ontogeny repeats phylogeny
Q611 Allen ANALYTICAL QUESTIONS MCQ
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
A.
They were partially isolated from the surroundings.
B.
They could maintain an internal environment.
C.
They were able to reproduce.
D.
They could separate combinations of molecules from the surroundings.
Q612 Allen ANALYTICAL QUESTIONS MCQ
Which one of the following scientist's name is correctly matched with the theory put forth by him?
A.
de Vries ā€“ Natural selection
B.
Mendel ā€“ Theory of pangenesis
C.
Weismann ā€“ Theory of continuity of Germplasm
D.
Pasteur - Inheritance of acquired characters
Q613 Allen ANALYTICAL QUESTIONS MCQ
In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of:-
A.
Inheritance of darker colour character acquired due to the darker environment
B.
Natural selection whereby the darker forms were selected.
C.
Appearance of the darker coloured individuals due to very poor sunlight.
D.
Protective mimicry.
Q614 Allen ANALYTICAL QUESTIONS MCQ
Darwin's finches are a good example of
A.
Convergent evolution
B.
Industrial melanism
C.
Connecting link
D.
Adaptive radiation
Q615 Allen ANALYTICAL QUESTIONS MCQ
The most apparent change during the evolutionary history of Homo sapiens is traced in: -
A.
Walking upright
B.
Shortening of jaws
C.
Remarkable increase in the brain size
D.
Loss of body hair
Q616 Allen ANALYTICAL QUESTIONS MCQ
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements:
Statements:
(A) Wings of butterfly and birds look alike and are the results of ________(i)________ evolution
(B) Miller showed that CHā‚„, Hā‚‚, NHā‚ƒ and ________(i)________, when exposed to electric discharge in flask resulted in formation of______(ii)______
(C) Vermiform appendix is a ______(i)________organ and an ______(ii)________evidence of evolution.
(D) According to Darwin evolution took place due to _____(i)______ and________
(ii)________of the fittest.
A.
(A) āˆ’ (i) convergent (B) ā€“ (i) oxygen, (ii) nucleosides
B.
(B) ā€“ (i) water vapour, (ii) amino acids, (C) ā€“ (i) rudimentary (ii) chemical
C.
(C) ā€“ (i) vestigial, (ii) anatomical, (D) ā€“ (i) mutations, (ii) multiplication
D.
(D) ā€“ (i) small variations, (ii) survival, (A) ā€“ (i) convergent
Q617 Allen ANALYTICAL QUESTIONS MCQ
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?
A.
Upright posture
B.
Shortening of jaws
C.
Binocular vision
D.
Increasing brain capacity
Q618 Allen ANALYTICAL QUESTIONS MCQ
Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as: -
A.
Migration
B.
Divergent evolution
C.
Adaptive radiation
D.
Natural selection
Q619 Allen ANALYTICAL QUESTIONS MCQ
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?
A.
Increasing cranial capacity
B.
Upright posture
C.
Shortening of jaws
D.
Binocular vision
Q620 Allen ANALYTICAL QUESTIONS MCQ
The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was :-
A.
Cro-Magnons humans
B.
Ramapithecus
C.
Homo habilis
D.
Neanderthal human
Q621 Allen ANALYTICAL QUESTIONS MCQ
Which one of the following options gives one correct example each of convergent evolution and divergent evolution?
A.
Convergent evolution-Bones of forelimbs of vertebrates, Divergent evolution-Wings of butterfly and birds
B.
Convergent evolution-Thorns of Bougainvillea and tendrils of Cucurbita, Divergent evolution-Eyes of Octopus and Mammals
C.
Convergent evolution-Eyes of octopus and mammals, Divergent evolution-Bones of forelimbs of vertebrates
D.
Convergent evolution-Thorns of Bougainvillea and tendrils of Cucurbita ,Divergent evolution-Wings of butterflies and birds
Q622 Allen ANALYTICAL QUESTIONS MCQ
The idea of mutations was brought forth by:
A.
Hardy Weinberg, who worked on allele frequencies in a population
B.
Charles Darwin, who observed a wide variety of organisms during sea voyage
C.
Hugo do Vries, who worked on evening primrose
D.
Gregor Mendel, who worked on Pisum sativum
Q623 Allen ANALYTICAL QUESTIONS MCQ
The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of:
A.
Analogous organs that have evolved due to divergent evolution.
B.
Homologous organs that have evolved due to convergent evolution.
C.
Homologous organs that have evolved due to divergent evolution.
D.
Analogous organs that have evolved due to convergent evolution.
Q624 Allen ANALYTICAL QUESTIONS MCQ
The tendency of population to remain in genetic equilibrium may be disturbed by:
A.
lack of random mating
B.
random mating
C.
lack of migration
D.
lack of mutations
Q625 Allen ANALYTICAL QUESTIONS MCQ
The process by which organisms with different evolutionary history evolve similar phenotypic adaptation in response to a common environmental challenge, is called:
A.
Adaptive radiation
B.
Natural selection
C.
Convergent evolution
D.
Non-random evolution