Living World NEET MCQ

1. Which among these is not a taxonomic aid?

a) Flora
b) Herbarium
c) Key
d) Physiology

Answer:

d) Physiology

Explanation:

Physiology is the study of functions of living organisms. It is not a taxonomic aid, which is used for identification and classification of organisms.

2. Biological names are derived from which language?

a) Latin
b) Greek
c) English
d) French

Answer:

a) Latin

Explanation:

Biological names are primarily derived from Latin because it is a dead language, ensuring that meanings of words will not change over time.

3. Which of the following is not a correct binomial name?

a) Homo sapiens
b) Felis domestica
c) Panthera leo
d) Canis

Answer:

d) Canis

Explanation:

A binomial name consists of two words – the genus name followed by the species name. “Canis” is only a genus name.

4. Who is known as the father of taxonomy?

a) Robert H. Whittaker
b) Charles Darwin
c) Carl Linnaeus
d) Gregor Mendel

Answer:

c) Carl Linnaeus

Explanation:

Carl Linnaeus is known as the father of taxonomy for his pioneering work in the classification of organisms.

5. In which taxonomic aid can dried plant specimens be seen?

a) Museum
b) Herbarium
c) Botanical garden
d) Zoo

Answer:

b) Herbarium

Explanation:

A herbarium is a collection of preserved plant specimens and associated data used for scientific study.

6. The term ‘systematics’ is used to describe:

a) Evolutionary relationships among organisms
b) Study of diversity of organisms
c) Identification and classification of organisms
d) Study of habitats of organisms

Answer:

c) Identification and classification of organisms

Explanation:

Systematics deals with the identification, classification, and nomenclature of organisms.

7. How many kingdoms did Robert H. Whittaker propose in his five-kingdom classification?

a) 3
b) 4
c) 5
d) 6

Answer:

c) 5

Explanation:

Robert H. Whittaker proposed a five-kingdom classification: Monera, Protista, Fungi, Plantae, and Animalia.

8. Which one of the following is not a correctly matched pair?

a) Binomial nomenclature – Carl Linnaeus
b) Five kingdom system – Robert H. Whittaker
c) Three domain system – Ernst Haeckel
d) Species concept – John Ray

Answer:

c) Three domain system – Ernst Haeckel

Explanation:

The three domain system was proposed by Carl Woese, not Ernst Haeckel.

9. In the hierarchy of classification, which of the following is the correct order of taxa from highest to lowest?

a) Phylum → Class → Order → Family
b) Family → Order → Class → Phylum
c) Class → Phylum → Family → Order
d) Order → Class → Family → Phylum

Answer:

a) Phylum → Class → Order → Family

Explanation:

The correct hierarchy from the highest to lowest in classification is Phylum, Class, Order, and then Family.

10. Which taxonomic aid provides an index to the plant species of a particular area?

a) Herbarium
b) Flora
c) Key
d) Manual

Answer:

b) Flora

Explanation:

Flora refers to the list of plant species in a particular geographical area.

11. What is the primary aim of taxonomy?

a) Study of physiology of organisms
b) Classification of organisms based on similarities and differences
c) Study of fossils
d) Understanding behavior of animals

Answer:

b) Classification of organisms based on similarities and differences

Explanation:

The primary aim of taxonomy is to classify organisms based on similarities and differences.

12. What is a monophyletic group?

a) Group that includes organisms and all their descendants
b) Group that includes only a part of the lineage
c) Group that excludes its common ancestor
d) Group with members from different ancestors

Answer:

a) Group that includes organisms and all their descendants

Explanation:

A monophyletic group comprises an ancestral species and all its descendants.

13. Who introduced the concept of ‘species’ as a group of organisms?

a) Carl Linnaeus
b) Ernst Mayr
c) John Ray
d) Charles Darwin

Answer:

c) John Ray

Explanation:

John Ray was the one who introduced the concept of species as a group of organisms.

14. Which among these is the basic unit of classification?

a) Genus
b) Family
c) Species
d) Order

Answer:

c) Species

Explanation:

Species is considered the basic unit in the hierarchy of classification.

15. The scientific name of the human being is written correctly as:

a) Homo Sapiens
b) Homo sapiens
c) homo sapiens
d) HOMO SAPIENS

Answer:

b) Homo sapiens

Explanation:

According to binomial nomenclature, the genus name is capitalized, while the species name is written in lowercase.

16. The evolutionary development and diversification of a species or group of organisms is termed:

a) Phylogeny
b) Ontogeny
c) Genomics
d) Taxonomy

Answer:

a) Phylogeny

Explanation:

Phylogeny refers to the evolutionary development and diversification of a species or group of organisms.

17. Which taxonomic category represents the most closely related group of organisms?

a) Order
b) Genus
c) Class
d) Family

Answer:

b) Genus

Explanation:

Genus is a taxonomic rank that is more specific than family and represents a group of species that are closely related.

18. The correct order of taxonomic categories is:

a) Kingdom → Phylum → Class → Order → Family → Genus → Species
b) Phylum → Kingdom → Class → Order → Genus → Species → Family
c) Kingdom → Class → Order → Phylum → Family → Genus → Species
d) Class → Kingdom → Phylum → Order → Genus → Species → Family

Answer:

a) Kingdom → Phylum → Class → Order → Family → Genus → Species

Explanation:

The taxonomic hierarchy goes from broader categories to more specific ones, starting with Kingdom and ending with Species.

19. Taxonomic keys are used for:

a) Identifying the common name of an organism
b) Identifying the species of an organism
c) Naming an organism
d) Classifying new organisms

Answer:

b) Identifying the species of an organism

Explanation:

Taxonomic keys provide a systematic and stepwise approach to identify the species of an organism.

20. What does ICZN stand for?

a) International Code of Zoological Nomenclature
b) International Council of Zoological Names
c) International Code of Zygotic Nomenclature
d) International Community of Zoological Nomenclature

Answer:

a) International Code of Zoological Nomenclature

Explanation:

ICZN stands for International Code of Zoological Nomenclature, which is a set of rules to name animals.

21. The category which is between class and family is:

a) Genus
b) Species
c) Order
d) Kingdom

Answer:

c) Order

Explanation:

In the taxonomic hierarchy, the category between class and family is the order.

22. Which category in the taxonomic hierarchy is more general than genus but more specific than order?

a) Species
b) Family
c) Phylum
d) Kingdom

Answer:

b) Family

Explanation:

In the taxonomic hierarchy, the category more general than genus but more specific than order is family.

23. Two plants that belong to the same __________ must also belong to the same family and order.

a) Genus
b) Species
c) Class
d) Kingdom

Answer:

a) Genus

Explanation:

In the taxonomic hierarchy, if two plants belong to the same genus, they necessarily belong to the same family and order as well.

24. Which of the following is not a principal taxonomic category?

a) Tribe
b) Division
c) Universe
d) Kingdom

Answer:

c) Universe

Explanation:

“Universe” is not a recognized taxonomic category. The other options, Tribe, Division, and Kingdom, are all taxonomic categories.

25. 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) Photoperiod

Explanation:

Seasonal breeders, both plants and animals, use the photoperiod (length of day and night) as a cue for timing their reproductive cycles. While water and temperature can impact the overall health and reproductive capabilities, it is the photoperiod that exclusively determines the breeding season for many organisms.

26. The keys are based on contrasting characters generally in a pair called _______.

a) flora
b) couplet
c) both (a) and (b)
d) manuals

Answer:

b) couplet

Explanation:

In taxonomy, keys are based on contrasting characters that help in identifying organisms. These characters are generally in pairs and are referred to as a “couplet”. Flora refers to the plants of a particular region or habitat, and manuals are descriptive accounts of species, but the correct term for the paired contrasting characters in keys is “couplet”.

27. The order generally ends with

a) ales
b) aceae
c) eae
d) none of these

Answer:

a) ales

Explanation:

In the biological nomenclature, taxonomic ranks have specific endings to denote their level. For plants, the order typically ends with “ales”, while the family ends with “aceae”.

28. 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) Biodiversity

Explanation:

Biodiversity refers to the variety and variability of life on Earth. It encompasses the number of different species of plants and animals, the genetic differences within these species, and the ecosystems and habitats in which they are found.

29. Taxon is a

a) unit of classification.
b) species.
c) highest rank of classification.
d) group of closely related organisms.

Answer:

d) group of closely related organisms.

Explanation:

A taxon encompasses all included taxa of lower rank and individual organisms. It represents a group of closely related organisms at any level in the classification hierarchy.

30. 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) Manual

Explanation:

Manuals provide the key for the identification of names of species occurring in an area. They are especially designed for ready reference to the names of species and are used extensively by taxonomists and researchers in the field

31. The famous botanical garden ‘Kew’ is located in

a) England
b) Lucknow
c) Berlin
d) Australia

Answer:

a) England

Explanation:

The Royal Botanic Gardens, Kew, commonly known as Kew Gardens, is located in southwest London, England. It is a world-famous botanical garden and a center of botanical research and conservation.

32. Herbarium is a

a) garden where medicinal plants are grown.
b) garden where herbaceous plants are grown.
c) dry garden.
d) chemical to kill plants.

Answer:

c) dry garden.

Explanation:

A herbarium is a collection of preserved plant specimens and associated data used for scientific study. The specimens are dried, pressed, and mounted on sheets. It serves as a reference center and provides authentic plant material for taxonomic and phylogenetic studies.

33. 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) International Code of Botanical Nomenclature

Explanation:

ICBN (International Code of Botanical Nomenclature) provides the rules and guidelines for naming plants. It ensures that every plant has a unique and universally accepted scientific name.

34. Binomial nomenclature means

a) one name given by two scientists.
b) one scientific name consisting of a generic and specific epithet.
c) two names, one latinized, other of a person.
d) two names of same plant.

Answer:

b) one scientific name consisting of a generic and specific epithet.

Explanation:

Binomial nomenclature refers to the system of naming an organism with two terms: the first indicating the genus and the second indicating the species. This system was introduced by Carl Linnaeus.

35. Families are characterized on which of the following features of plant species?

a) External morphology
b) Anatomy of parts
c) Vegetative and reproductive parts
d) Seasonal similarities and variations

Answer:

c) Vegetative and reproductive parts

Explanation:

The classification of plants into families is largely based on the vegetative and reproductive parts. These characteristics provide essential information about the relationships among different species, thus aiding in their classification into appropriate families.

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