The Living World Class 11 MCQs Questions with Answers
Question 1.
The term phylum was given by
(a) Cuvier
(b) Haeckel
(c) Theophrastus
(d) Linnaeus
Answer
Answer: (b) Haeckel
Question 2.
Binomial nomenclature was given by
(a) Theophrastus
(b) Linnaeus
(c) R. H. Whittaker
(d) Aristotle
Answer
Answer: (b) Linnaeus
Question 3.
A group of closely related classes is called
(a) Genus
(b) Phylum
(c) Family
(d) Order
Answer
Answer: (b) Phylum
Question 4.
Systematics refers to the study of
(a) Nomenclature and identification of plants and animals
(b) Different kinds of organisms and their classification
(c) Diversity of kinds of organisms and their relationships
(d) Identification and classification of plants and animals
Answer
Answer: (c) Diversity of kinds of organisms and their relationships
Question 5.
Basic unit or smallest taxon of taxonomy/ classification is
(a) species
(b) kingdom
(c) family
(d) variety
Answer
Answer: (a) species
Question 6.
In a scientific name, the name of the author is printed in
(a) Abbreviated
(b) Capital letters
(c) Bold
(d) Italics
Answer
Answer: (a) Abbreviated
Question 7.
As we go from species to kingdom in a taxonomic hierarchy, the number of common characteristics
(a) Remain same
(b) Will increase
(c) Will decrease
(d) May increase or decrease
Answer
Answer: (c) Will decrease
Question 8.
The taxonomic unit ‘Phylum’ in the classification of animals is equivalent to which hierarchical level in classification of plants?
(a) Class
(b) Order
(c) Family
(d) Division
Answer
Answer: (d) Division
Question 9.
Phylogenetic classification is based on
(a) utilitarian system
(b) habits
(c) overall similarities
(d) common evolutionary descent
Answer
Answer: (d) common evolutionary descent
Question 10.
Example of interspecific hybrid is
(a) Liger and dog
(b) Tigon and tiger
(c) Cat and lion
(d) Tigon and liger
Answer
Answer: (d) Tigon and liger
Question 11.
In nomenclature,
(a) The genus is written after the species.
(b) Genus and species may not be of the same name.
(c) Both genus and species are printed in italics.
(d) The first letter is capital in both genus and species.
Answer
Answer: (c) Both genus and species are printed in italics.
Question 12.
The term “New Systematics” was introduced by
(a) Bentham and Hooker
(b) Linnaeus
(c) Julian Huxley
(d) A.P. de Candolle
Answer
Answer: (c) Julian Huxley
Question 13.
Binomial nomenclature was introduced by
(a) de Vries
(b) Carlous Linnaeus
(c) Huxley
(d) John Ray
Answer
Answer: (b) Carlous Linnaeus
Question 14.
The branch connected with nomenclature, identification and classification is
(a) Ecology
(b) Taxonomy
(c) Physiology
(d) Morphology
Answer
Answer: (b) Taxonomy
Question 15.
The Darwin of 20th century is
(a) Aristotle
(b) Ernst Mayr
(c) Carolus Linnaeus
(d) Theophrastus
Answer
Answer: (b) Ernst Mayr
Question 16.
The basic unit of classification is
(a) Species
(b) Phylum
(c) Genus
(d) Family
Answer
Answer: (a) Species
Question 17.
In which organism protoplasm and cellular structure is absent
(a) Algae
(b) Virus
(c) Fungi
(d) Bacteria
Answer
Answer: (b) Virus
Question 18.
The highest categories of classification is
(a) Family
(b) Order
(c) Kingdom
(d) Class
Answer
Answer: (c) Kingdom
Question 19.
The maintenance of constant temperature inside the body is an example of
(a) Homeostasis
(b) Negative feedback loop
(c) Both A and B
(d) None of these
Answer
Answer: (a) Homeostasis
Question 20.
Preservative liquid used for storing fleshy organs is
(a) FAA
(b) Ethyl alcohol
(c) Acetic acid
(d) Formalin
Answer
Answer: (d) Formalin
Question 21.
A taxon is
(a) A type of living organism
(b) A group of related species
(c) A taxonomic group of any ranking
(d) A group of related families
Answer
Answer: (c) A taxonomic group of any ranking
Question 22.
“Taxonomy without phylogeny is similar to bones without flesh” is the statement of
(a) Oswald Tippo
(b) John Hutchinson
(c) Takhtajan
(d) Bentham and Hooker
Answer
Answer: (c) Takhtajan
Question 23.
System of classification used by Linnaeus was
(a) natural system
(b) artificial system
(c) phylogenetic system
(d) asexual system
Answer
Answer: (b) artificial system
Question 24.
In the five-kingdom system of classification, which single kingdom out of the following can include blue green algae, nitrogen-fixing bacteria and methanogenic archaebacteria?
(a) Fungi
(b) Plantae
(c) Protista
(d) Monera
Answer
Answer: (d) Monera
Question 25.
One of the following functions is exhibited only by green plants and not by animals.
(a) Growth
(b) Photosynthesis
(c) Digestion
(d) Response
Answer
Answer: (b) Photosynthesis
Question 26.
An important criterion for modern day classification is
(a) resemblances in morphology
(b) anatomical and physiological traits
(c) breeding habits
(d) presence or absence of notochord
Answer
Answer: (b) anatomical and physiological traits
Question 27.
The Father of Zoology is
(a) John Ray
(b) Buffon
(c) Carlous Linnaeus
(d) Aristotle
Answer
Answer: (d) Aristotle
Question 28.
All living organisms are linked to one another because
(a) They have common genetic material of the same type.
(b) They share common genetic material but to varying degrees.
(c) All have common cellular organisation.
(d) All of the above.
Answer
Answer: (b) They share common genetic material but to varying degrees.
Question 29.
Linnaeus evolved a system of nomenclature called
(a) mononomial
(b) vernacular
(c) binomial
(d) polynomial
Answer
Answer: (c) binomial
Question 30.
What is the difference between the taxonomic categories of division and phylum?
(a) Division is same as kingdom while phylum is more exclusive than division.
(b) Division is more inclusive category.
(c) Division refers to plants whereas phylum refers to animals
(d) Phylum is more inclusive category.
Answer
Question 31.
Which of the following is less general in characters as compared to genus?
(a) Species
(b) Family
(c) Class
(d) Division
Answer
Answer: (a) Species
Question 32.
Binomial nomenclature consists of two names. These are
(a) Family and genus
(b) Genus and species
(c) Species and variety
(d) Order and family
Answer
Answer: (b) Genus and species
Question 33.
A species was defined as ‘A population of interbreeding individuals which are reproductively isolated from other populations’ by
(a) J. B. Lamarck
(b) Charles Darwin
(c) Ernst Mayr
(d) Carolus Linnaeus
Answer
Answer: (c) Ernst Mayr
Question 34.
Artificial system of classification was first used by
(a) Linnaeus
(b) De Candolle
(c) Pliny the Edler
(d) Bentham and Hooker
Answer
Answer: (a) Linnaeus
Question 35.
A group of interbreeding organisms is called a
(a) Genus
(b) Species
(c) Family
(d) Order
Answer
Answer: (b) Species
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