The Living World MCQs Quiz Multiple Choice Questions & Answers

1. Assertion : Study of internal structure is called anatomy.
Reason : It is useful for phylogentic study

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

2. Assertion : The science of classifiying organisms is called taxonomy.
Reason : Systematics and taxonomy have same meaning.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

3. Assertion: The growth in living organisms is from inside.
Reason : Plants grow only upto certain age.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

4. Assertion: Species constitute a group of individuals with fundamental similarities.
Reason: Indica, leo, tuberosum represent such group of individuals.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

5. Assertion: Consciousness and response to stimuli can be considered as defining property of living organism.
Reason: The external environmental stimuli can be physical, chemical or biological.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

6. Assertion: In fungi, vegetative reproduction occurs by fragmentation and budding.
Reason: Asexual reproduction in fungi, occurs through formation of asexual spores.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

7. Assertion : Study of biology requires basic knowledge of chemistry and physics.
Reason : Living organisms are made up of atoms and molecules which follow chemical and physical laws.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

8. Assertion: Binomial nomenclature is system of providing name with two words.
Reason: Each name consists first of a specific name and second of a generic name.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

9. Assertion: A living organism is unexceptionally differentiated from a non living structure in the basis of responsiveness.
Reason: Response to stimuli is a defining property of living organism.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

10. Assertion: Classification is necessary to study all living organisms.
Reason: Individuals are grouped into categories in classification.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

11. Assertion: Living organisms are self replicating, evolving and self regulating unit.
Reason: These are capable of responding to external stimuli.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

12. The process to standardize the naming of living organisms is called nomenclature. Obviously, the nomenclature is only possible when the organism is described correctly and we know to what organism the name is attached to this is identification. The system of providing scientific name with two components is called Binomial Nomenclature. The scientific name ensures that each organism is identified by only one name all across the world. They also ensures that such a name has not been used for any other known organism. Scientific names for plants are provided in ICBN and for animals, in ICZN. Who proposed binomial nomenclature?

1. Albert Einstein
2. Carolus Linnaeus
3. Charles Darwin
4. Francis crick

13. From the passage in question number 16, Which of the following is an example of binomial scientific name?

1. China rose
2. Green algae
3. Rana tigrina
4. Snow leopard

14. From the passage in question number 16, In binomial nomenclature, the name of organism consists of

1. Both B and C
2. kingdom
3. genus
4. species

15. From the passage in question number 16, ICBN stands for

1. Internal code of botanical nomenclature
2. Internal botanical congress names
3. International center of botanical names
4. International code of botanical nomenclature

16. From the passage in question number 16, In binomial nomenclature, ...............epithet starts with small letter

1. None of the above
2. Genus
3. Species
4. Both A and B

17. All living organisms grow. Increase in mass and increase in number are twin characteristic of growth. Multicellular organisms grow by cell division. In plants, growth occurs continuously throughout their life span. Non living organisms also grow if we take increase in body mass as criterian for growth. However, this kind of growth exhibited by non living objects is by accumulation of the material on surface. Growth, therefore cannot be taken as defining property of living organisms What are the twin characteristics of growth?

1. none of the above
2. increase in mass
3. increase in number
4. both a and b

18. From the passage in question number 21, Growth in living organisms is from

1. none of the above
2. outside
3. inside
4. both a and b

19. From the passage in question number 21, Growth cannot be taken as a defining property or feature of living organisms because

1. some living organisms do not show the process of reproduction
2. all living organisms do not show growth
3. non living things grow from inside
4. non living things also grow

20. From the passage in question number 21, Growth is synonymous with reproduction for which of the following organisms?

1. all of the above
2. unicellular algae
3. amoeba
4. bacteria

21. From the passage in question number 21, Growth and reproduction are mutually exclusive events in which of the following

1. lower organisms
2. plants only
3. animals only
4. higher animals and plants

22. In multicellular organisms...........refers to the production of progeny possessing features more or less similar to those of parents.

1. consciousness
2. growth
3. reproduction
4. metabolism

23. The sum total of all the chemical reactions occurring in our body is known as

1. reproduction
2. metabolism
3. growth
4. regeneration

24. Cell division occurs..............in plants and...........in animals.

1. once, twice
2. continuously, only up to a certain age
3. only up to a certain age, continuously
4. continuously, never

25. The scientific name of mango is

1. Mangifera Indica
2. Mangifera indica
3. Mangifera Indica
4. Mangifera indica

26. The order generally ends with

1. none of these
2. ales
3. aceae
4. eae

27. Which of the following are unique features of living organisms?

1. All of the above
2. Growth and reproduction
3. Reproduction and ability to sense environment
4. Metabolism and interaction

28. Which of the following term is used to refer the number of varieties of plants and animals on earth ?

1. Classification
2. Taxonomy
3. Identification
4. Biodiversity

29. Three domains of life are:

1. Prokarya, Eukarya, Mammalia
2. Archea, Bacteria, Eukarya
3. Plant, Animal, Fungi
4. Aves, Fishe, Mammalia

30. Identify the correct match:

1. Triticum – species
2. Mangifera - species
3. Rana - genus
4. Sapiens - genus

31. Scientific names of animals are provided in:

1. None of the above
2. Red data book
3. ICZN
4. ICBN

32. Taxon is a

1. group of closely related organisms.
2. unit of classification.
3. species.
4. highest rank of classification.

33. What is the correct sequence of taxa from larger to smaller?

1. Kingdom-phylum-class-order
2. Genus-species-order-kingdom
3. Species-order-phylum-kingdom
4. Species-genus-order-phylum

34. In printed scientific names, only the.................is capitalized.

1. family
2. class
3. species
4. genus

35. Each category of taxonomic hierarchy refers to as a unit of

1. classification
2. systematic
3. identification
4. nomenclature

36. Which of the following statement(s) is/are correct?

1. All of the above
2. Only living organisms grow.
3. Plants grow only up to a certain age.
4. The growth in living organisms is from inside.

37. Which of the following statements regarding nomenclature is correct?

1. All of the above
2. Generic name always begins with capital letter whereas specific name with small letter.
3. Scientific name should be printed in italics.
4. Scientific name when handwritten should be underlined.

38. Musca domestica is scientific name of

1. Ant
2. Housefly
3. Mosquito
4. Snail

39. Which of the following statements regarding growth is incorrect?

1. Growth in in vitro culture of unicellular organisms can be observed by counting the number of cells.
2. In plants, growth by cell division is seen only up to a certain stage.
3. Growth exhibited by non-living objects is by accumulation of material on the surface.
4. A multicellular organism grows by cell division.

40. Which of the following statements is incorrect?

1. Species that are in the same genus share very specific characteristics.
2. The scientific name for humans is Homo-sapiens.
3. Organisms placed in the same genus are least closely related.
4. Moving from species to kingdom, more different species are included in each higher category.

41. Which one of the following statements is correct about biodiversity ?

1. All of the above
2. It is the occurrence of varied type of organisms on earth.
3. Each different kind of plant, animal or organism represents a species.
4. The number of species that are known and described range between 1.7–1.8million.

42. Which of the following statements (i – vi) are correct ?
(i) Growth cannot be taken as a defining property of living organism.
(ii) Dead organism does not grow.
(iii) Reproduction cannot be an all inclusive defining characteristic of living organisms.
(iv) No non-living object is capable of replicating itself.
(v) Metabolism in a test tube is non-living.
(vi) Metabolism is a defining feature of all living organisms.

1. All of these
2. (i) and (iii)
3. All except (v)
4. All except (iii)

43. Which of the following statements are correct?
(i) Genus comprises a group of related species.
(ii) Taxon represents a taxonomic group of individual organisms.
(iii) Family comprises a group of related genera.
(iv) Taxonomic category class includes related orders.

1. (ii), (iii) and (iv)
2. (i), (ii), and (iv)
3. (ii) and (iv)
4. (i), (iii) and (iv)

44. Which of the following statement(s) is/are correct ?
(i) All living organisms have ability to respond the environment stimuli which could be physical, chemical or biological.
(ii) Plants respond to external factors like light, water, temperature, other organisms, pollutants, etc.
(iii) Photoperiod affects the process of reproduction.
(iv) Human being is the only organism who has self-consciousness.

1. All of these
2. Only (i)
3. Both (ii) and (iii)
4. Both (i) and (iv)

45. 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 off springs.
(iii) Human beings belong to the species sapiens which is grouped in the genus-Homo.

1. Family
2. Species
3. Genus
4. Order

46. Which of the following does not come under taxon?

1. Biodiversity
2. Species
3. Kingdom
4. Division

47. Assertion: Living organisms are regarded as closed systems.
Reason: Energy of living organisms can not be lost or gained from external environment.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

48. Assertion : The species is reproductively isolated natural population.
Reason : Prokaryotes cannot be kept under differents species on the basis of reproductive isolation.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

49. Assertion : Chemotaxonomy is classifying organisms at molecular level.
Reason : Cytotaxonomy is classifying organisms at cellular level.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false

50. Assertion: Bacteria, Protista do not have circulatory system.
Reason: These organisms live in moist and watery environment.

1. Both Assertion and reason are false.
2. Both Assertion and Reason are true and Reason is a correct explanation for Assertion
3. Both Assertion and Reason are true but Reason is not a correct explanation for Assertion
4. Assertion is true and Reason is false