Match List I with List II
List I (Term) List II (Definition) A. Sympatric
speciation I. The process by which organisms adapt to changed environmental conditions to form new species in
a relatively short period.B. Parapatric
speciationII. The process of differentiation and acquiring reproductive isolation within the same geographical
area.C. Adaptive
radiationIII. Population evolving in different geographical regions due to isolation. D. Allopatric
speciationIV. The process of speciation which occurs between adjacent populations within a broadly continuous
habitat.
Choose the correct answer from the options given below:
a-ii, b-iv, c-i, d-iii
Speciation Matching: Terms and Definitions
A. Sympatric Speciation (II)
Definition II describes speciation occurring within the same geographical area and acquiring reproductive isolation. This matches Sympatric speciation.
B. Parapatric Speciation (IV)
Definition IV relates to speciation between adjacent populations within a broadly continuous habitat. This matches Parapatric speciation.
C. Adaptive Radiation (I)
Definition I describes organisms adapting to changed environments to form new species quickly. This matches Adaptive radiation.
D. Allopatric Speciation (III)
Definition III involves populations evolving in different geographical regions due to isolation. This matches Allopatric speciation.
Correct Option
The correct matching is A-II, B-IV, C-I, D-III. This corresponds to Option 2.
Important Questions from Evolutionary Mechanisms
Given below are proposed analogous structures among organisms.
A. wings of birds and bats
B. wings of bats and tetrapod digits
C. tendrils of Vitis and tendrils of pumpkin
D. tubers of potatoes and sweet potatoes
E. fins of fish and flippers of a whale
Which one of the following options correctly states the analogous structures?
Biased gene conversion (BGC) has been proposed to cause changes in allele frequencies in a population. Select the statement that is NOT correct about BGC.
- Long - term patterns of evolution are shaped by large scale process(s) such as :
(I) Speciation
(II) Mass extinction
(III) Adaptive radiation
Choose the correct answer: - Speciation means :
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Theoretically, natural selection moulds and shapes populations through differential fertility and mortality.
Reason R: Sickle cell provides a persuasive argument for differential mortality, affecting populations in malarial environment, but evidence for differential fertility is far from unequivocal.
In the light of the above statements, choose the most appropriate answer from the options given below
