DRDO - The Living World 1000+ MCQ [Solved] PDF Download

1. Which of the following statement(s) is/are not correct ?
(i) Genus comprises a group of related species which has more characters in common in comparison to species of other genera.
(ii) Three different genera such as Solanum, Datura and Petunia are placed in the family malvaceae.
(iii) In case of plants, classes with a few similar characters are assigned to a higher category called phylum.
A. Both (i) and (ii)
B. Only (iii)
C. Both (ii) and (iii)
D. All of these
Answer : C

2. Which of the following taxonomical aids is being described by the given statements (i-iv) ?
(i) They generally established in educational institutes.
(ii) They have collections of preserved plant and animal specimens for study and reference.
(iii) Insects are preserved in boxes after collecting, killing and pinning.
(iv) They often have collections of skeletons of animals too.
A. Herbarium
B. Museum
C. Zoological parks
D. Botanical gardens
Answer : B

3. In printed scientific names, only the ______ is capitalized.
A. class
B. species
C. genus
D. family
Answer : C

4. Which one of the following is the first step in taxonomy ?
A. Naming
B. Description
C. Identification
D. Classification
Answer : C

5. Which of the following statements regarding nomenclature is correct?
A. Generic name always begins with capital letter whereas specific name with small letter.
B. Scientific name should be printed in italics.
C. Scientific name when typed or handwritten should be underlined.
D. All of the above
Answer : D

6. Which of the following are unique features of living organisms?
A. Growth and reproduction
B. Reproduction and ability to sense environment
C. Metabolism and interaction
D. All of the above
Answer : D

7. ICBN stands for
A. International Code of Botanical Nomenclature
B. International Congress of Biological Names
C. Indian Code of Botanical Nomenclature
D. Indian Congress of Biological Names
Answer : A

8. Statement 1 : The species is reproductively isolated natural population.
Statement 2 : Prokaryotes cannot be kept under different species on the basis of reproductive isolation.
A. Statement-1 and Statement-2 are True and statement-2 is a correct explanation for statement-1
B. Statement -1 and statement -2 are True and statement-2 is not a correct explanation for statement-1
C. Statement-1 is true and statement-2 is false
D. Both the statements are false.
Answer : B

9. Which of the following factors exclusively affects reproduction in seasonal breeders, both plants and animals?
A. Water
B. Temperature
C. Photoperiod
D. All of these
Answer : C

10. The common characteristics between tomato and potato will be maximum at the level of their__________.
A. genus
B. family
C. order
D. division
Answer : B

11. Each statement in the key is called _______.
A. lead
B. catalogues
C. manuals
D. monographs
Answer : A

12. Which two points are known as the twin characteristics of growth?
(i) Increase in mass
(ii) Differentiation
(iii) Increase in number of individuals
(iv) Response to stimuli
A. (i) and (ii)
B. (i) and (iv)
C. (ii) and (iii)
D. (i) and (iii)
Answer : D

13. Select the correct statements (i-v) regarding taxonomic categories.
(i) Each step or rank in hierarchy is called taxonomic category.
(ii) Species is a group of individual organisms with fundamental similarities capable of breeding among themselves.
(iii) Taxonomic studies of all unknown organisms have led to the development of common categories like kingdom, phylum or division, class, order, family, genus and species.
(iv) Lower the category, greater is the difficulty of determining the relationship to other taxa at the same level.
A. (i) & (ii) only
B. (ii) & (iv) only
C. (i), (ii) & (iii) only
D. All of the above
Answer : A

14. Which of the following statement(s) is/are not correct ?
(i) Reproduction is the production of progeny possessing features dissimilar to their parents.
(ii) The fungi, the filamentous algae, the protonema of mosses, all multiply by budding.
(iii) Many organisms like mules, sterile worker bees do not reproduce.
(iv) Reproduction is not an all-inclusive defining characteristic of living organisms.
A. Only (i)
B. Both (i) and (ii)
C. Both (ii) and (iv)
D. All of these
Answer : B

15. Match column I with column II and choose the correct option.

Column-I	Column-II
A. Family	I. tuberosum
B. Kingdom	II. Polymoniales
C. Order	III. Solanum
D. Species	IV. Plantae
E. Genus	V. Solanaceae

A. A IV; B III; C V; D II; E I
B. A V; B IV; C II; D I; E III
C. A IV; B V; C II; D I; E III
D. A V; B III; C II; D I; E IV
Answer : B

16. Which of the following organisms is not correctly matched with its particular ?
A. Human beings Sapiens, species
B. Lion Panthera, genus
C. Cats Felidae, genus
D. Datura Solanaceae, family
Answer : C

17. Study the following statements and elect the correct description of botanical garden.
(i) Plant species are grown for identification purposes.
(ii) Labeling of each plant consists of its botanical name/ scientific name and its family.
(iii) Specimens are preserved in the jars and containers.
(iv) It is a type of store house which contains dried, pressed and preserved plant specimens on sheet.
(v) Plant specimen contains a labeling of information about date and place of collection.
A. (i) and (ii) only
B. (i), (ii) and (iii) only
C. (ii) and (iv) only
D. All the five statements.
Answer : A

18. Which of the following term is used to refer the number of varieties of plants and animals on earth ?
A. Taxonomy
B. Identification
C. Biodiversity
D. Classification
Answer : C

19. The disadvantage of using common names for species is that
A. the names may change.
B. one name does not apply universally.
C. one species may have several common names and one common name may be applied to two species.
D. all of the above
Answer : D

20. Couplet represents the choice made between two opposite options which results in
A. rejection of both the option.
B. acceptance of both the option.
C. either acceptance or rejection of both the option.
D. acceptance of only one and rejection of the other.
Answer : D

21. The sum total of all the chemical reactions occurring in our body is known as
A. metabolism
B. growth
C. regeneration
D. reproduction
Answer : A

22. Which one of the following animals is correctly matched with its particular named taxonomic category ?
A. Tiger Tigris, the species
B. Cuttle fish Mollusca, a class
C. Humans Primata, the family
D. Housefly Musca, an order
Answer : A

23. Which of the following statement(s) is/are correct ?
(i) Classification is the providing of standardize names to the organisms such that a particular organism known by the same all over the world.
(ii) Taxonomy is the correct description of an organism and to recognition in its scientific name.
(iii) The system of naming with two components (binomial nomenclature) is proposed by Carolus Linneaus.
(iv) Zoological names are based on International Code for Zoological Nomenclature (ICZN).
A. Only (i)
B. Both (iii) and (iv)
C. Only (iv)
D. All of these
Answer : B

24. The fungi, the filamentous algae, the protonema of mosses, all easily multiply by _____.
A. budding
B. fission
C. regeneration
D. fragmentation
Answer : D

25. Which one of the following statements is correct about biodiversity ?
A. It is the occurrence of varied type of organisms on earth.
B. Each different kind of plant, animal or organism represents a species.
C. The number of species that are known and described range between 1.71.8 million.
D. All of the above
Answer : D

26. Each category of taxonomic hierarchy refers to as a unit of ______.
A. systematic
B. identification
C. nomenclature
D. classification
Answer : D

27. Which of the following is not a characteristic of life?
A. Reproduction
B. Complex chemical organization
C. Adaptation to environmental changes
D. Differentiation from cells to tissues
Answer : D

28. As we go from species to kingdom in a taxonomic hierachy, the number of common characteristics
A. will decrease.
B. will increase.
C. remain same.
D. may increase or decrease.
Answer : A

29. Which of the following statement(s) is/are correct?
A. Only living organisms grow.
B. Plants grow only up to a certain age.
C. The growth in living organisms is from inside.
D. All of the above
Answer : C

30. Which of the following is less general in characters as compared to genus?
A. Species
B. Division
C. Class
D. Family
Answer : A

31. Refer the botanical name of wheat Triticum aestivum and identify the statement which correctly describes it.
A. The second word belongs to genus and starts with a small letter.
B. Both the words Triticum aestivum denote the specific epithet.
C. The first word Triticum denotes the genus which starts with a capital letter.
D. The first word Triticum denotes the specific epithet while the second word denotes the genus.
Answer : C

32. Which of the following taxonomic categories is being described by the given statements (i-iii) ?
(i) It is the basic unit of classification.
(ii) It is defined as the group of individuals which resemble in their morphological and reproductive characters and interbreed among themselves and produce fertile offsprings.
(iii) Human beings belong to the species sapiens which is grouped in the genus Homo.
A. Species
B. Genus
C. Order
D. Family
Answer : A

33. Which of the following characters given below displays the description of lowest taxonomic category of the organisms of plant and animal kingdom?
A. It includes one or more than one order.
B. It is a group containing one or more families.
C. It is a group of related individuals that resemble one another.
D. It is a group of organisms that are closely related and share similar characteristics.
Answer : C

34. Match the taxonomic categories given in column I with their feature given in column II.

Column I	Column II
A. Taxon	I. Baic unit of classification
B. Species	II. A taxonomic group of any rank
C. Phylum	III. Division is the same category in case of plants
D. Genus	IV. Identified based on a number of similar characters
E. Order	V. Group of related species having more character in common with others species

A. A - V, B - II, C - IV, D - III, E - I
B. A - III, B - I, C - IV, D - II, E - V
C. A - II, B - I, C - III, D - V, E - IV
D. A - III, B - II, C - IV, D - I, E - V
Answer : C

35. Taxonomic hierarchy refers to
A. step-wise arrangement of all categories for classification of plants and animals.
B. a group of senior taxonomists who decide the nomenclature of plants and animals.
C. a list of botanists or zoologists who have worked on taxonomy of a species or group.
D. classification of a species based on fossil record.
Answer : A

36. In majority of higher animals and plants, _____ and _____ are mutually exclusive events.
A. growth; nutrition
B. nutrition; consciousness
C. growth; reproduction
D. reproduction; consciousness
Answer : C

37. Two animals which are the members of the same order must also be the members of the same __________.
A. class
B. family
C. genus
D. species
Answer : A

38. Cell division occurs _______ in plants and _______ in animals.
A. continuously, only upto a certain age
B. only upto a certain age, continuously
C. continuously, never
D. once, twice
Answer : A

39. In the given columns, column I contains the terms and column II contains its description. Select the correct match from the option given below.

Column I	Column II
A. Growth	I. Production o f offspring.
B. Reproduction	II. Compos ed o f one or more cells .
C. Metabolism	III. Increase in mass and increase in number o f individuals .
D. Cellular organization	IV. Sum total of all chemical reactions occurring in body.

A. A - I, B - II, C - III, D - IV
B. A - III, B - I, C - II, D - IV
C. A - III, B - I, C - IV, D - II
D. A - II, B - IV, C - III, D - I
Answer : C

40. The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for
A. interaction with the environment and progressive evolution.
B. reproduction.
C. growth and movement.
D. responsiveness to touch.
Answer : B

41. Which of the following statements are not correct ?
(i) Lower the taxon, more are the characteristics that the members within the taxon share.
(ii) Order is the assemblage of genera which exhibit a few similar characters.
(iii) Cat and dog are included in the same family Felidae.
(iv) Binomial nomenclature was introduced by Carolus Linnaeus.
A. (i), (ii) and (iii)
B. (ii), (iii) and (iv)
C. (i) and (iv)
D. (ii) and (iii)
Answer : D

42. Statement 1: Information given on the label of herbarium sheets does not include family.
Statement 2: Families are characterized on the basis of reproductive features of plant species only.
A. Statement 1 and 2 are true and statement 2 is the correct explanation for statement 1.
B. Statement 1 and 2 are true but statement 2 is not a correct explanation for statement 1.
C. Statement 1 is true and statement 2is false.
D. Both the statements are false.
Answer : D

43. If an organism is in the same class but not in the same family then it may belong to same
A. genus
B. species
C. variety
D. order
Answer : D

44. Systematics refers to the
A. identification and classification of plants and animals.
B. nomenclature and identification of plants and animals.
C. diversity of kinds of organisms and their relationship.
D. different kinds of organisms and their classification.
Answer : C

45. Which of the following statements regarding growth is incorrect?
A. In animals growth is seen up to a certain age.
B. Increase in body mass is considered as growth.
C. Growth by cell division occurs continuously throughout their life span in animals.
D. Increase in mass and number of individuals is the characteristics feature of animal growth.
Answer : C

46. Which of the following taxonomic aid provides information for the identification of names of species found in an area?
A. Monograph
B. Manual
C. Flora
D. Periodical
Answer : B

47. Genus represents
A. an individual plant or animal.
B. a collection of plants or animals.
C. group of closely related species of plants or animals.
D. none of the above.
Answer : C

48. Keys are generally _______ in nature.
A. physical
B. chemical
C. analytical
D. qualitative
Answer : C

49. Which of the following statement(s) is/are correct for Metabolsim ?
A. It is the sum total of all physical reactions taking place inside a living system.
B. All plants, animals, fungi and microbes exhibit metabolism.
C. Isolated metabolic reactions in-vitro are not living but are living reactions.
D. All of the above
Answer : B

50. Statement 1 : Taxon and category are different things.
Statement 2 : Category shows hierarchical classification.
A. Statement- 1 and statement-2 are true and statement-2 is a correct explanation for statement -1
B. Statement -1 and Statement -2 are true; statement-2 is not a correct explanation for statement - 1
C. Statement - 1 is true and statement- 2 is false
D. Both the statements are false.
Answer : A