1. Passage Reading
2. Verbal Logic
3. Non Verbal Logic
4. Numerical Logic
5. Data Interpretation
6. Reasoning
7. Analytical Ability
8. Quantitative Aptitude
171. (b) outlining the factors that have contributed to the current hypothesis concerning the number of basic categories of living organisms (Because the author is neither giving evidence, nor talking about experiments but outlining the factors leading to current hypthesis)
172. (c) prokaryotes and eukaryotes form two fundamental categories (Because "the details in the two forms are different and characteristic of the respective forms")
173. (d) It is flawed because it fails to recognize an important distinction among prokaryotes (Because there are "certain other bacteria, the archaebacteria, which are also prokaryotes and which resemble true bacteria, represent a distinct evolutionary branch")
174. (d) The molecular sequences in eukaryotic RNA, true bacterial RNA, and archaebacterial RNA (Because "New techniques for determining the molecular sequence of the RNA of organisms have produced evolutionary information")
175. (a) Some of those classifications will have to be reevaluated (Because the third para talks about "the reconstruction of ancestral versions of genes")
176. (c) eukaryotes are fundamentally different from true bacteria (Because the first para tells about two fundamental and exhaustive categories one eukaryotic i.e, Multicellular plants and animals, as well as many unicellular organisms and the second prokaryotic cell or true bacteria)
177. (b) Amino acid sequences of enzymes are uniform for eukaryotic and prokaryotic organisms (Because "the amino acid sequences of various enzymes tend to be typically prokaryotic or eukaryotic")
178. (a) tentative acceptance (Because the author is giving various reasons which might lead to the acceptance of division of living things into three categories)