The Living World Mock Test – Class 11 Biology

1. A text-described figure shows one outer box labelled Homo containing two inner boxes labelled Homo sapiens and Homo species X. If both inner labels are shortened to Homo, what information is lost?

2. A graph has taxonomic rank on the horizontal axis from species to kingdom and potential group membership on the vertical axis. The curve rises continuously. Moving from family to order should therefore:

3. Six internal structural characters are compared between an unknown specimen and two candidate taxa. The specimen matches Taxon P in characters and Taxon Q in . The corresponding agreement percentages and inference are:

4. In a two-time figure, the mass of the same seedling rises from to , while the number of seedlings remains one. The figure directly represents growth as:

5. Match each genus with the family in which it is placed. Column II entries may be reused.

6. Let , and be three distinct genera placed in Family . The relation that correctly represents their taxonomic arrangement is:

7. A yeast cell develops a small outgrowth. The outgrowth enlarges, receives cellular material and later separates as a new individual. The relationship between the organism and the process is:

8. Two present-day taxa have character sets and . The comparison gives but . Which interpretation is valid?

9. A marker begins at family in a hierarchy figure and follows two successive upward arrows. Which path does it trace?

10. Let denote the set of known and described extant species and the set of all extant species, whether described or not. The relation most consistent with the stated estimate is:

11. An order contains several families. Taxonomists place some of those families in Suborder P and the remaining families in Suborder Q, while retaining all of them within the original order. This change is best interpreted as:

12. Species X belongs to Family P and Species Y belongs to Family Q. Their families are distinct, but both are included in Order O. If no lower rank is shared, their lowest common taxonomic rank is:

13. Suppose evolutionary relationships are deliberately removed from a systematic investigation, while identification, naming and grouping are retained. The study would lose its strongest basis for:

14. A naming authority replaces independently invented labels with names assigned under agreed international criteria. The immediate biological outcome of this change is:

15. A person recognises and evaluates their own anxious thoughts, while a plant alters growth after unilateral illumination. The most accurate comparison is:

16. In a vertical hierarchy, the basal box represents the narrowest major category, every upward arrow enters a broader group, and the top box represents the broadest listed category. Which pair correctly labels the two endpoints?

17. Let represent concordant similarities among present organisms and represent continuity of related structural patterns between past and present forms. Which relation gives the strongest biological interpretation?

18. The mass of a sand mound is recorded against time. Its mass rises steadily while wind deposits grains and becomes constant immediately after deposition stops. Cross-sections show that newly supplied grains remain on the outer surface. This pattern represents:

19. Two species within one genus share of recorded characters. Two species from different genera of the same family share of the characters. Their agreement percentages are:

20. Consider the following statements about Panthera and Felis.
I. They represent separate genera.
II. Both are included in Felidae.
III. Their common family makes them members of one genus.
IV. Species assigned to different genera may share the same family.

21. A database stores the name indica Mangifera after accidentally reversing its two components. If the component identities are already known, the appropriate repair is:

22. Examine the classification records below.

Which pair preserves the distinction between rank and taxon?

23. In animal classification, the major category immediately above class is called ______.

24. A genus is most accurately defined as:

25. Two genetically comparable groups of a seasonal breeder receive identical food and temperature for weeks. Group P receives of light daily, while Group Q receives . More animals enter reproductive condition in Q. The strongest justified inference is:

26. Two teams examine the same specimen. Team P receives a complete character description, while Team Q receives only colour and size. Team P consistently reaches one identity, whereas members of Q disagree. The strongest inference is:

27. Which category is the highest and broadest in the major taxonomic hierarchy from species upward?

28. A zoological record describes two genera. Genus P includes lions, leopards and tigers, while Genus Q includes domestic cats and closely related forms. Both genera share the broader character pattern of the cat family. The family containing P and Q is:

29. Inside a cell, an arrangement shows , , and . The complete arrangement represents:

30. Let denote the chemical reactions occurring in the cells of an organism. The relation that best expresses metabolism is:

31. Reports of organisms from cold mountains, dense forests, oceans, freshwater lakes, deserts and hot springs together most strongly demonstrate that:

32. Species X is placed in Genus G. Genus G belongs to Family F, which belongs successively to Order O, Class C, Phylum H and Kingdom K. Which conclusion necessarily follows?

33. A student replaces observable criteria for distinguishing living from non-living with personal beliefs about what “deserves” to be called alive. This change would most directly make the conclusion:

34. Match each entry with its role in binomial nomenclature. Each Column II entry is used once.

35. A sterile organism performs coordinated metabolism, maintains internal organisation, adjusts to temperature changes and belongs to a population that reproduces and changes across generations. Its failure to produce progeny personally is best interpreted as:

36. Evaluate the following statements about defining living organisms.
I. Growth alone is insufficient since non-living objects may enlarge by surface accumulation.
II. Reproduction alone is insufficient since some living individuals are sterile.
III. An integrated description includes self-replication, evolution, self-regulation and response to stimuli.
IV. One enzyme reaction in a tube proves that the complete mixture is a living organism.

37. All six recorded characters are assumed to have equal taxonomic weight.

Which result correctly identifies the nearest candidate from the table?

38. Systems P and Q contain the same molecular component set . P has organised arrangement , Q has random arrangement , and only P displays integrated living function . The relation most consistent with the observation is:

39. Independent teams classify man as Homo sapiens within Chordata and housefly as Musca domestica within Arthropoda. Despite the different phyla, every team retains both organisms within Animalia. The result supports the inference that:

40. Three independent teams compare a newly recognised population X with three established species of Genus G and with species from two other genera. X shares of genus-level characters with every G species but has two stable distinguishing characters not found in any established species. Repeated comparisons give the same result. The strongest inference is:

41. A vertical figure shows the major ranks kingdom, phylum, class, order, family, genus and species. A smaller box labelled “suborder” is inserted between order and family. The figure should be interpreted to mean that:

42. Three cell-structural characters are recorded for two candidate groups and an unknown organism.

Although the unknown superficially resembles some members of P, the table supports:

43. Select the pair in which the first member is a life form and the second is a living process.

44. Plants collected from sunny and shaded sites differ greatly in leaf size. When their offspring are grown under identical light conditions, the leaf-size difference largely disappears, while all diagnostic structures remain alike. The most appropriate prediction is that the original plants should:

45. Arrange the events by which fragmentation can produce a new organism.
P. The parental body separates into viable pieces.
Q. Cells within a fragment grow and divide.
R. A fragment becomes physically independent.
S. Missing organisation is completed in the growing fragment.

46. Match each species-related situation with the principle it illustrates. Each Column II entry is used once.

47. Use the arrangement described below. A large region labelled Carnivora contains two separate regions labelled Felidae and Canidae. Felidae contains Panthera and Felis, while Canidae contains Canis. The arrangement indicates that:

48. An animal possesses a notochord and a dorsal hollow neural system but lacks the character combination used to place organisms in Mammalia. The most defensible prediction is that it:

49. Two sexually reproducing populations are tested under the same suitable conditions.

The strongest conclusion from the complete table is:

50. Match each entry with its role. Each Column II entry is used once.