CBSE Class 11 Biology The Living World MCQs Set B

Question: Glycogen is a polymer of 
a) galactose 
b) glucose
c) fructose
d) sucrose
Answer: b
 
Question: Adenine is 
a) purine 
b) pyrimidine
c) nucleoside
d) nucleotide
Answer: a
 
Question: The CO₂ content by volume, in the atmospheric air is about
a) 0.0314 %
b) 0.34 %
c) 3.34 %
d) 4 %
Answer: a
 
Question: If there was no CO₂ in the earth’s atmosphere the temperature of earth’s surface would be
a) higher than the present
b) less than the present
c) the same
d) dependent on the amount of oxygen in the atmosphere
Answer: b
 
Question: The most important feature of all living systems is to 
a) utilize oxygen to generate energy
b) replicate the genetic information
c) produce gametes
d) utilize solar energy for metabolic activities
Answer: b
 
Question: Most abundant organic compound on earth is
a) protein 
b) cellulose
c) lipids
d) steroids
Answer: b

Question: The label of a herbarium sheet does not carry information on:
a) Date of collection
b) Name of collector
c) Local names
d) Height of the plant
Answer: d

Question: Which one of the following is not a correct statement?
a) A museum has collection of photographs of plants and animals
b) Key is a taxonomic aid for identification of specimens
c) Herbarium houses dried, pressed and preserved plant specimens
d) Botanical gardens have collection of living plants for reference
Answer: a

Question: Choose correct scientific name of mango:
a) Mangifera indica Linn
b) Mangifera indica Hook
c) Mangifera indica L
d) Mangifera Indica
Answer: a 

Question: Reason of diversity in living being is 
a) mutation
b) gradual change
c) long term evolutionary change
d) short term evolutionary change
Answer: c
 
Question: First life on earth was
a) cyanobacteria
b) chemoheterotrophs
c) autotrophs
d) photoautotrophs
Answer: b

Question: Linnaeus system of classification is:
a) Natural
b) Artificial
c) Phylogenetic
d) Progressive
Answer: b

Question: Binomial nomenclature was introduced by:
a) Linnaeus
b) Darwin
c) Bentham and Hooker
d) Aristotle
Answer: a

Question: Select the correctly written scientific name of Mango which was first described by Carolus Linnaeus.
a) Mangifera Indica
b) Mangifera indica Car. Linn.
c) Mangifera indica Linn.
d) Mangifera indica
Answer: c

Question: Sequence of taxonomic categories is:
a) Class-phylum-tribe-order-family-genus-species
b) Division-class-family-tribe-order-genus-species
c) Division-class-order-family-tribe-genus-species
d) Phylum-order-class-tribe-family-genus-species
Answer: c

Question: Choose the correct statements from following:
A) Taxonomic hierarchy includes seven obligate categories.
B) Haeckel introduced the taxon phylum.
C) Three–domain classification was introduced by Carl Woese.
Options:
a) A & B
b) B & C
c) A & C
d) All
Answer: d

Question: 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) A group of plants in a given area
Answer: c

Question: The term “New Systematics” was introduced by:
a) Bentham and Hooker
b) Linnaeus
c) Julian Huxley
d) P. de Candolle
Answer: c

Question: Which of the following is a defining characteristic of living organisms?
a) Growth
b) Ability to make sound
c) Reproduction
d) Response to external stimuli
Answer: d

Question: The label of a herbarium sheet does not carry information on:
a) Local names
b) Height of the plant
c) Date of collection
d) Name of collector
Answer: b

Question: The high boiling point of water is advantageous to living organisms because:
a) The environment seldom reaches the boiling point of water.
b) Organisms can easily boil off enough water to keep themselves cool.
c) It allows organisms to spread heat evenly throughout their bodies.
d) Organisms can absorb a great deal of heat before they reach the boiling point.
Answer: b

Question: As we go from species to kingdom in a taxonomic hierarchy, the number of common characteristics:
a) Will decrease
b) Will increase
c) Remain same
d) May increase or decrease
Answer: a

Question: The term ‘systematics’ refers to:
a) Identification and study of organ systems
b) Identification and preservation of plants and animals
c) Diversity of kinds of organisms and their relationship
d) Study of habitats of organisms and their classification
Answer: c

Question: The taxonomic unit ‘Phylum’ in the classification of animals is equivalent to which hierarchical level in classification of plants:
a) Class
b) Order
c) Division
d) Family
Answer: c

Question: Which of the following ‘suffixes’ used for units of classification in plants indicates a taxonomic category of ‘family’?
a) —ales
b) —onae
c) —aceae
d) —ae
Answer: c

Question: 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 organization
d) All of the above
Answer: b

Question: Read the following statements and identify the correct statements:
(a) Biodiversity refers to the number and types of organisms present on earth.
(b) The local names would vary from place to place, even within a country.
(c) The number of species that are known and described range between 1.7–1.8 million.
(d) International Code for Botanical Nomenclature (ICBN) provides scientific names for plants.
(e) Nomenclature or naming is only possible when the organism is described correctly.
a) A and B only
b) A, B and C only
c) A, D and C only
d) All of these
Answer: d

Question: Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature and correctly described?
a) Musca domestica – the common house lizard, a reptile
b) Plasmodium falciparum – a protozoan pathogen causing the most serious type of malaria
c) Felis tigris – the Indian tiger, well protected in Gir forests
d) E. coli – full name Entamoeba coli, a commonly occurring bacterium in human intestine
Answer: b

Question: What is true for photolithotrophs? 
a) Obtain energy from radiations and hydrogen from organic compounds
b) Obtain energy from radiations and hydrogen from inorganic compounds
c) Obtain energy from organic compounds
d) Obtain energy from inorganic compounds
Answer: b
 
Question: There is no life on moon due to the absence of 
a) O₂ 
b) water
c) light
d) temperature
Answer: b
 
Question: According to Oparin, which one of the following was not present in the primitive atmosphere of the earth? 
a) Methane 
b) Oxygen
c) Hydrogen
d) Water vapour
Answer: b
 
Question: The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for 
a) responsiveness to touch
b) interaction with the environment and progressive evolution
c) reproduction
d) growth and movement
Answer: c
 
Question: Which one of the following aspects is an exclusive characteristic of living things ?
a) Increase in mass by accumulation of material both on surface as well as internally.
b) Isolated metabolic reactions occur in vitro.
c) Increase in mass from inside only
d) Perception of events happening in the environment and their memory.
Answer: c

Question: The system of classification based on evolutionary and genetic relationships among organisms, ignoring the morphological similarities or differences, is called:
a) Cladistics
b) Phenetics
c) Classical systematics
d) New systematics
Answer: a

Question: Which one of the following animals is correctly matched with its particular taxonomic category?
a) Tiger – tigris, species
b) Cuttlefish – mollusca, class
c) Humans – primata, family
d) Housefly – Musca, order
Answer: a

Question: Species are considered as:
a) Real basic units of classification
b) The lowest units of classification
c) Artificial concept of human mind which cannot be defined in absolute terms
d) Real units of classification devised by taxonomists
Answer: a

Question: Scientific name of Mango plant is Mangifera indica (Linn.) Santapau. In the above name, Santapau refers to:
a) Variety of Mango
b) A taxonomist who proposed the present nomenclature in honour of Linnaeus
c) A scientist who first described Mango plant
d) A scientist who changed the name proposed by Linnaeus and proposed present name
Answer: d

Question: Which of the following is less general in characters as compared to genus?
a) Species
b) Division
c) Class
d) Family
Answer: a

Question: ‘Taxon’ is the unit of a group of:
a) Order
b) Taxonomy
c) Species
d) Genes
Answer: b

Question: The classification of Linnaeus was mainly based on:
a) Sepals
b) Carpels
c) Petals
d) Stamens
Answer: d

Question: Sequence of taxonomic categories is:
a) Class–phylum–tribe–order–family–genus–species
b) Division–class–family–tribe–order–genus–species
c) Division–class–order–family–tribe–genus–species
d) Phylum–order–class–tribe–family–genus–species
Answer: c

Question: The term phylum was given by:
a) Cuvier
b) Haeckel
c) Theophrastus
d) Linnaeus
Answer: b

Question: A group of plants or animals with similar traits of any rank is:
a) Species
b) Genus
c) Order
d) Taxon
Answer: d

Question: A taxon is:
a) A group of related families
b) A group of related species
c) A type of living organism
d) A taxonomic group of any ranking
Answer: d

Question: Read the following statements:
(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.
Which of the following statements are NOT correct?
a) (i), (ii) and (iii)
b) (ii), (iii) and (iv)
c) (i) and (iv)
d) (ii) and (iii)
Answer: d

Question: Basic unit or smallest taxon of taxonomy/classification is:
a) Species
b) Kingdom
c) Family
d) Variety
Answer: a

Question: Static concept of species was put forward by:
a) de Candolle
b) Linnaeus
c) Theophrastus
d) Darwin
Answer: b

Question: Choose the correct one:
(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.
a) (i) and (iii)
b) All except (v)
c) All except (iii)
d) All of these
Answer: b

Question: One of the most important functions of botanical gardens is that:
a) They provide a beautiful area for recreation
b) One can observe tropical plants there
c) They allow ex situ conservation of germplasm
d) They provide the natural habitat for wild life
Answer: c

Question: Viable material of endangered species can be preserved by:
a) Gene bank
b) Gene library
c) Herbarium
d) Gene pool
Answer: a