The Living World Mock Test – Class 11 Biology

1. A specimen is compared with a reference description and recognised as Species X. It is then placed in Genus P and Family Q. The two operations, in order, are:

2. A species-accumulation graph plots cumulative recorded kinds against equal units of survey effort. The totals after four units are , , and . The relationship shown is best described as:

3. Consider the following statements about the name Mangifera Indica.
I. The generic name has the required initial capital.
II. The specific epithet should begin with a small letter.
III. Capitalising both words violates the standard convention.
IV. Two initial capitals indicate two valid generic names within one binomial.

4. Three viable pieces of Planaria normally regenerate into complete individuals under suitable conditions. A treatment blocks regenerative development but does not cause immediate death of the pieces. After the usual interval, the expected result is:

5. An organism is initially placed in Taxon P because of external resemblance. Later studies show that its internal organisation, cell structure and development consistently match Taxon Q, while the original external similarity is superficial. The classification should most reasonably:

6. Match each environmental cue with the plant response that most directly demonstrates sensitivity to it. Each Column II entry is used once.

7. A specimen investigation produces the following record.

The error revealed by the complete record arose most directly because:

8. 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:

9. A scientifically testable question about the living world is:

10. Two species names are represented as and , where . The most accurate inference is:

11. A taxonomic report refers jointly to Mammalia at class rank, Felidae at family rank and Panthera at genus rank. Collectively, these named classification units are ______.

12. Examine the decomposition of four proposed records.

Which row correctly analyses Mangifera indica?

13. Use the arrangement described below. An original figure shows one order containing six family boxes. A revised figure retains the same order but inserts Suborder P around three families and Suborder Q around the other three. The principal improvement produced by the revised figure is that it:

14. An intact unicellular organism detects a chemical change and adjusts several reaction rates together. After the cell is disrupted, its separated components retain some individual activities but no longer produce the coordinated adjustment. The case supports the inference that:

15. A fungal mycelium is mechanically divided into several viable pieces. Under favourable conditions, each piece establishes a separate mycelium without producing a bud or spore. The process is:

16. Consider the five ranks above species in the listed mango and wheat rows: genus, family, order, class and division. How many of these ranks contain the same taxon in both rows, and what fraction of the five does this represent?

17. Assertion: Membership in Carnivora does not require Felidae and Canidae to be combined into one family.
Reason: An order is broader than a family and may contain related families whose members share fewer characters than members within one family.

18. An arrangement shows a box labelled “Class rank.” Inside it is a named group containing organisms with a consistent insect body organisation and three pairs of jointed legs. The arrangement demonstrates that:

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

20. One record lists Panthera, while another lists Panthera leo. Their taxonomic relationship is best described as:

21. 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:

22. Response magnitude is plotted against environmental-stimulus intensity. The response rises as stimulus intensity increases and returns toward its earlier level after the stimulus is removed. This pattern most strongly identifies the organism as:

23. Two research summaries are compared.
P. Species are treated only as labels in an alphabetical list, with no investigation of population relationships.
Q. Natural populations are tested for interbreeding, reproductive isolation and their role in evolutionary divergence.
Which evaluation best reflects Ernst Mayr’s contribution?

24. Newly collected organisms are first identified and classified. Researchers then compare them with established groups and revise their placement so that the arrangement better reflects inferred evolutionary relationships. The broader term for the complete investigation is:

25. Consider the following statements about classification.
I. It arranges a large variety of organisms into manageable groups.
II. It supports comparison by bringing organisms with associated characters together.
III. It is identical to assigning a universally accepted name.
IV. Every convenient category must represent the same taxonomic rank.

26. Assertion: A crystal that enlarges through continued deposition of material on its surface possesses self-sustained metabolism.
Reason: Metabolism consists of coordinated chemical reactions operating within cellular organisation rather than a measurable increase in size alone.

27. In the major taxonomic hierarchy from species to kingdom, the lowest listed category is:

28. Two teams receive identical preserved specimens but only the description “small green organism with a spotted surface.” They assign different accepted names. After detailed structural characters are supplied, both select the same identity. The result most strongly indicates that:

29. Arrange the stages that connect a biodiversity survey with practical biological-resource planning.
P. Survey habitats and collect representative records.
Q. Describe the relevant characters of each specimen.
R. Identify the organisms and apply accepted names.
S. Organise the verified records within a classification-based inventory.
T. Use the inventory to guide a resource application.

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

31. A unicellular culture starts with cells. All cells divide synchronously through complete rounds with no cell death. Using , the final population is:

32. 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:

33. The observations below were obtained from three equal-area communities.

Which interpretation best reflects the introductory meaning of biodiversity?

34. An inventory begins with known kinds. Three additional habitats yield the records P: observed, new; Q: observed, new; R: observed, new. Which result combines the highest novelty rate with the final cumulative richness?

35. Use the arrangement described below. One outer region labelled Chordata contains five separate inner regions labelled Pisces, Amphibia, Reptilia, Aves and Mammalia. The arrangement represents:

36. 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:

37. Sterile worker bees perform organised activities, obtain energy, maintain their bodies and respond to colony signals. Their existence demonstrates that:

38. An agricultural survey records two visually similar grasses under one local name. Only one is the intended crop species, but their yield records are about to be combined. The most appropriate taxonomic action is to:

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

40. An unknown organism shares only its green colour with a reference category but differs from that category in structure, organisation and reproductive features. The most appropriate decision is to:

41. Two groups share of recorded morphological characters. The remaining character is a reproductive structure that differs consistently in all mature individuals, is unaffected by habitat and can be recorded independently by several observers. The most defensible provisional treatment is:

42. An editor accidentally exchanges Anacardiaceae and Poaceae between the mango and wheat rows but leaves every other entry unchanged. What is the most likely result?

43. Assertion: Replacing panthera Tigris with Panthera tigris repairs the naming convention without changing the organism represented.
Reason: The correction changes only the initial case of the generic name and specific epithet while preserving both components and their order.

44. Examine the classification records below.

Which pair preserves the distinction between rank and taxon?

45. 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?

46. When Panthera Tigris is corrected without changing either word or their order, the specific epithet must begin with a ______ initial.

47. Match each evidence pattern with the strength of support it provides for recognising a biological taxon. Column II entries may be reused.

48. Arrange the following descriptions from the narrowest task to the broadest biological study.
P. Assigning an accepted scientific name
Q. Characterising, identifying, classifying and naming organisms
R. Performing the operations in Q while also interpreting evolutionary relationships

49. An unknown plant differs in leaf size from three Solanaceae genera but shares their fundamental floral organisation and fruit characters. The reproductive evidence most directly suggests that:

50. An animal shows the defining broad characters of Mammalia but differs consistently from every tested member of Order P in an order-level character set. Arrange the defensible classification steps.
P. Confirm the mammalian class-character pattern.
Q. Compare the animal with the diagnostic profile of Order P.
R. Use the consistent conflicts to reject placement in Order P.
S. Retain Mammalia and evaluate placement in another mammalian order.