The Living World Mock Test – Class 11 Biology

1. Ernst Mayr is most closely associated with which contribution to biological classification and evolutionary study?

2. In biological usage, consciousness is most appropriately recognised as the ability to:

3. 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:

4. Let represent cellular synthesis reactions, represent cellular breakdown reactions and represent the organism’s metabolism. The relation that best expresses their biological connection is:

5. Mass is plotted against time for a seedling and for a mineral deposit. Both curves rise at the same rate. Additional observations show that the seedling adds material through cellular activity, whereas the deposit enlarges by material accumulating on its surface. The most valid conclusion is:

6. Two asexually reproducing bacterial populations cannot be compared through mating tests. Across repeated cultures, Population P consistently differs from Population Q in cell form, colony appearance, nutritional requirement and habitat association, while each population remains internally stable. The most defensible taxonomic treatment is to:

7. Equal sampling effort is used in a small cultivated plot and a structurally varied dense forest. The plot yields distinct kinds, while the forest yields . The strongest conclusion is:

8. The common-organism table lists species, genus, family, order, class and phylum or division. Consider the following statements.
I. Mango and wheat share exactly of these listed taxa.
II. Man and housefly share of these listed taxa.
III. Mango and man share exactly of these listed taxa.

9. 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:

10. Biology is most accurately described as the scientific study of:

11. Consider the following statements.
I. Reproduction contributes to continuity of a population or lineage.
II. Every living individual must personally produce progeny.
III. Sterile individuals can retain metabolism, organisation and responsiveness.
IV. Reproduction is characteristic of life but is not universally defining for each individual.

12. 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:

13. A survey records distinct kinds in its original area. Expanding into an adjacent habitat adds previously unrecorded kinds and redetects already listed kinds. The new cumulative richness and percentage increase are:

14. Field workers in two regions use different familiar words for specimens later confirmed to belong to the same organism. The difference represents ______ rather than evidence of two biological kinds.

15. Assertion: Reliable placement of an organism requires knowledge of its characters.
Reason: Similarities and dissimilarities can be compared only after relevant organismal features have been observed or recorded.

16. 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:

17. 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?

18. Arrange the events through which a temperature change can produce a plant response.
P. A measurable alteration in growth or physiology appears.
Q. Plant cells detect the changed temperature condition.
R. The surrounding temperature changes.
S. Coordinated cellular processes are adjusted.

19. Two colour forms of a sexually reproducing animal look consistently different. Further study shows that members of the two forms mate freely in the natural population and repeatedly produce fertile offspring. If no other isolating evidence appears, the biological species idea predicts that the forms should:

20. Let , , , , , and represent species, genus, family, order, class, phylum or division, and kingdom, respectively. Which relation correctly represents their nesting?

21. 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:

22. Consider the following statements about self-replication in the integrated description of living systems.
I. It contributes to biological continuity through production of new organisms or systems.
II. It requires every offspring to be an exact copy of its parent.
III. A sterile individual does not invalidate self-replication as a broader property of living lineages.
IV. External deposition of material on an object is sufficient evidence of self-replication.

23. Plants, mammals and dogs can all be described as taxa even though they:

24. A young plant has produced most new roots toward the wetter left side of a split container. The moisture gradient is reversed while light, temperature and soil composition remain unchanged. Subsequent new root growth is expected to:

25. A classification record contains the entries Mammalia at class and Carnivora at order. Mammalia and Carnivora are:

26. Overall body size is plotted against age. Curve P for a perennial plant continues to rise throughout the observed lifespan. Curve Q for an animal rises rapidly early in life and then approaches a plateau. The graph is best interpreted as showing that:

27. 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:

28. In plant classification, the category corresponding in relative position to an animal phylum is ______.

29. 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.

30. Average character agreement is recorded for pairs of species.

The data support the conclusion that:

31. Consider the following statements about growth in a multicellular organism.
I. New cells produced within the body can contribute to an increase in organismal mass.
II. Cell division supplies cells that become integrated into the growing body.
III. Every cell division produces a new independent multicellular organism.
IV. Multicellular growth occurs only by deposition on the outer surface.

32. Several individuals share the same diagnostic body organisation but differ in age-related size. Another group has a consistently different arrangement of the same structures. The soundest placement decision is to:

33. A branching arrangement begins with one box labelled Genus G. It divides into three terminal boxes labelled Species P, Species Q and Species R. A fourth terminal, Species S, arises from a different box labelled Genus H. The arrangement shows that:

34. Two groups examine replicate specimens. Group P records relevant characters, determines identity, assigns hierarchical placement and then applies the accepted name. Group Q begins with a familiar name and records only features that appear to support it. Independent reviewers agree consistently with P but frequently reject Q’s conclusions. The results support:

35. Assertion: The name panthera tigris follows the standard capitalisation convention for a binomial.
Reason: The generic name begins with a capital letter, whereas the specific epithet begins with a small letter.

36. Two coded animal groups are examined using the same structural method. Group P has a dorsal hollow neural system and other broad chordate characters. Group Q has a ventral solid neural cord and lacks the stated chordate character combination. The result most strongly supports:

37. Panthera leo and Panthera tigris differ at species but share Panthera, Felidae, Carnivora, Mammalia, Chordata and Animalia. Across the seven major ranks from species to kingdom, how many taxa do they share, and what is their lowest shared rank?

38. 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:

39. Which relation correctly compares division in plants with phylum in animals?

40. Across bacteria, fungi, plants and animals, the common structural condition that completes the statement “living organisms possess ______” is:

41. An organism produces a new individual that develops separately and resembles the parent in its basic features. This event is best identified as:

42. A forest-only survey records distinct kinds of organisms. After adding a lake and a hot-spring site, the cumulative total becomes . How many additional kinds were recorded, and what is the best biological interpretation?

43. The word tuberosum is written alone in a biological record. Its most accurate interpretation is:

44. Embryos of an unknown animal group, a confirmed chordate group and a confirmed non-chordate group are examined at comparable developmental stages by blinded observers. A notochord is recorded in the unknown and chordate groups but not in the non-chordate group. Other broad observations are compatible with chordate organisation. The strongest inference is:

45. Assertion: The row Mangifera indica → Triticum → Anacardiaceae → Sapindales → Dicotyledonae → Angiospermae cannot represent one internally consistent classification.
Reason: The generic component of Mangifera indica is Mangifera, not Triticum.

46. A reference guide lists four accepted identities.

A specimen has opposite leaves, bilateral flowers and a smooth fruit. Its identification is:

47. Identification is the operation through which a worker:

48. Two mass-versus-time curves rise for equal intervals. At time , loose external material is removed. A sand mound returns to its initial mass, whereas a seedling remains heavier than at the start. The difference most strongly indicates that:

49. Moving upward from species to class requires passage through genus, family and order. The number of rank transitions is ______.

50. Observations from an asexual reproductive event are listed below.
P. A local projection appears while the parent remains intact.
Q. The projection receives cellular material and enlarges.
R. A separate individual is formed after detachment.
The correct order and inferred process are: