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Complex computational elements of the CNS | CAT VARC Questions–Verbal Ability

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The question below is from previous year CAT question from CAT 2020 exam comes from sub-section CAT Verbal Ability: Complex computational elements of the CNS. Find out by answering this question which tests an aspirant’s CAT VARC skills:

CAT 2020 – Slot -1-Verbal Ability - Question 25 - Complex computational elements of the CNS

Q. 25: The four sentences (labelled A, B, C, D) below, when properly sequenced would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences and key in the sequence of the four numbers as your answer:

A. Complex computational elements of the CNS are organized according to a “nested” hierarchic criterion; the organization is not permanent and can change dynamically from moment to moment as they carry out a computational task.
B. Echolocation in bats exemplifies adaptation produced by natural selection; a function not produced by natural selection for its current use is exaptation — feathers might have originally arisen in the context of selection for insulation.
C. From a structural standpoint, consistent with exaptation, the living organism is organized as a complex of “Russian Matryoshka Dolls” — smaller structures are contained within larger ones in multiple layers.
D. The exaptation concept, and the Russian-doll organization concept of living beings deduced from studies on evolution of the various apparatuses in mammals, can be applied for the most complex human organ: the central nervous system (CNS).
 

25. Correct Answer: BCDA

DA is a link. D talks of various concepts being applied to the central nervous system. Sentence A is about the central nervous system. D, however, is not the opening sentence of the paragraph, as it talks of the ‘exaptation’ concept and ‘Russian doll organisation’ concept, the meaning of which is not clear from D. B explains what exaptation is and C what Russsian doll organisation is. So, BCDA is the right order.

 

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