Q. No.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
(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
Zosterophyllum evolved from
(1) Psilophyton
(2) Rhynia type plants
(3) Tracheophyte ancestors
(4) Chlorophyte ancestors
Which of the following is not on the same lineage?
(1) Herbaceous lycopods
(2) Arborescent lycopods
(3) Zosterophyllum
(4) Sphenopsids
Which of the following did not evolve from Psilophyton?
(1) Ferns
(2) Ginkgos
(3) Conifers
(4) Bryophytes
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