Q. No.Darwinian theory of evolution-
(1) Branching descent and natural selection are two auxillary concepts of this theory.
(2) Natural selection is based on some factual observations.
(3) Was influenced by work of Alfred Wallace on populations.
(4) Both A and C
(1) Branching descent and natural selection are two auxillary concepts of this theory.
(2) Natural selection is based on some factual observations.
(3) Was influenced by work of Alfred Wallace on populations.
(4) Both A and C
In the story of this world, evolution is a…...And in the story of life on Earth, evolution is……
(1) Process, result of environmental changes
(2) Result of environmental changes, process
(3) Process, result of natural selection
(4) Result of natural selection, process
Which of the following was the novel insight of Darwin in his theory?
(1) Variations are heritable and make resource utilisation better for few will enable only those to reproduce and leave more progeny
(2) Population size will grow exponentially if everybody reproduced maximally.
(3) Natural resources are limited yet populations are stable in size except for seasonal fluctuations.
(4) Members of populations vary in characteristics.
Two peaks will be observed in which of the operation of natural selection?
(1) Disruptive
(2) Directional
(3) Stabilising
(4) Both A and B
Peak getting higher and narrower is observed in which of the operation of natural selection?
(1) Disruptive
(2) Directional
(3) Stabilising
(4) Both A and B
What will be the frequency of homozygote dominant in a population of triploid organisms.
(1) p×p×p
(2) AA
(3) p
(4) P
If more individuals acquire peripheral character value at both the ends of the distribution curve; in such case natural selection has resulted in
(1) Stabilization
(2) Directional
(3) Disruption
(4) May be B or C depending upon population parameters
The mechanism of non cellular aggregates of giant macromolecules to cell with membranous envelop is
(1) Natural selection
(2) Not known
(3) Mutation
(4) Recombination
Which of the following could evolve by the time of 500 mya?
(1) Jawless fishes
(2) Invertebrates
(3) Sea weeds
(4) Lobefins
Bryophytes evolved from
(1) Psilophyton
(2) Rhynia type plants
(3) Tracheophyte ancestors
(4) Chlorophyte ancestors
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