Home » BIOLOGY CHAPTERWISE QUESTIONS & ANSWERS » CHAPTER-1: The Living World

CHAPTER-1: The Living World

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

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

In unicellular organisms, with respect to growth and
reproduction following can be true.

  1. Growth and Reproduction are inclusive events.
  2. unicellular organisms grow by cell division.
  3. Both are exclusive
    (a) Only 1 correct (b) Only 2 correct
    (c) Both 1 and 2 correct (d) Only 3 correct

In majority of higher animals and plants, _ and _are mutually exclusive events.
(a) growth; nutrition
(b) nutrition; consciousness
(c) growth; reproduction
(d) reproduction; consciousness

Non-living objects-

  1. Grows from external surface by collecting substance
    on it.
  2. Grows from internal surface like living.
  3. Do not grow at all.
    Which of the followings option is correct?
    (a) Only 1 correct (b) Only 2 correct
    (c) Only 3 correct (d) All 1, 2, 3 correct

In multicellular organisms, _ refers to the production of progeny possessing features more or less similar to those of parents.
(a) growth (b) reproduction
(c) metabolism (d) consciousness

The fungi, the filamentous algae, the protonema of mosses, all easily multiply by _.
(a) budding (b) fission
(c) regeneration (d) fragmentation

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

The sum total of all the chemical reactions occurring in our body is known as
(a) metabolism (b) growth
(c) regeneration (d) reproduction

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

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

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.

In printed scientific names, only the __ is capitalized.
(a) class (b) species
(c) genus (d) family

Each category of taxonomic hierarchy refers to as a unit of __.
(a) systematic (b) identification
(c) nomenclature (d) classification

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

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

The practical purpose of classification of living organisms is to
(a) explain the origin of living organsims.
(b) trace the evolution of living organsims.
(c) name the living organisms.
(d) facilitate identification of unknown organisms.

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

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

The order generally ends with
(a) ales (b) aceae
(c) eae (d) none of these

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

Which one of the taxonomic aids can give comprehensive account of complete compiled information of any one genus or family at a particular time?
(a) Taxonomic key (b) Flora
(c) Herbarium (d) Monograph

Which one of the following taxonomical aid is used for identification of plants and animals based on similarities and dissimilarities?
(a) Flora (b) Keys
(c) Monographs (d) Catalogues

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

The famous botanical garden ‘Kew’ is located in
(a) England (b) Lucknow
(c) Berlin (d) Australia

Keys are generally _ in nature.
(a) physical (b) chemical
(c) analytical (d) qualitative

Each statement in the key is called _.
(a) lead (b) catalogues
(c) manuals (d) monographs

The keys are based on contrasting characters generally in a pair called _.
(a) flora (b) couplet
(c) both (a) and (b) (d) manuals

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.

Growth in living organisms occurs by
(a) division of cells.
(b) increase in biomass.
(c) accumulation of materrial by external agency.
(d) both (a) and (b).

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

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)

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

Which of the following statements are correct about herbarium?
(a) It is a store house of collected plant specimens that are dried and preserved on sheets.
(b) Herbarium sheets contain information about date and place of collection, names, family, collector’s name, etc.
(c) It serves as quick referral systems in taxonomical studies.
(d) All of the above

Which of the following statements regarding growth is incorrect?
(a) In plants, growth by cell division is seen only upto a
certain stage.
(b) Growth exhibited by non-living objects is by
accumulation of material on the surface.
(c) A multicellular organism grows by cell division.
(d) Growth in in vitro culture of unicellular organisms
can be observed by counting the number of cells.

Which of the following statement(s) is/are correct for Metabolism ?
(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

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 1.7–1.8 million.
(d) All of the above

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)

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.
(a) (i), (ii), and (iv)
(b) (ii) and (iv)
(c) (i), (iii) and (iv)
(d) (ii), (iii) and (iv)

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

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.
(a) Only (i) (b) Both (ii) and (iii)
(c) Both (i) and (iv) (d) All of these

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

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

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

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

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.

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

Which of the following statements is incorrect?
(a) The scientific name for humans is Homo sapiens.
(b) Organisms placed in the same genus are least closely related.
(c) Moving from species to kingdom, more different species are included in each higher category.
(d) Species that are in the same genus share very specific characteristics.

Study the following statements and select 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

Which of the following is the correct sequence of the various steps of Herbarium formation?
(1) Drying (2) Poisoning (3) Collection
(4) Labelling (5) Mounting (6) Deposition
(7) Stitching
(a) 3, 1, 2, 5, 7, 4, 6 (b) 3, 2, 4, 5, 6, 7, 1
(c) 3, 1, 2, 5, 7, 6, 4 (d) 3, 1, 2, 7, 5, 6, 4

Which of the following pair is correctly matched.
(i) Fungi – Regeneration
(ii) Mossess – Fragmentation
(iii) Planaria – Budding
(a) (i) and (ii) (b) Both (i) and (iii)
(c) only (ii) (d) only (iii)

Dicotyledons like mango, brinjal and monocotyledons like Wheat and Rice are placed under a taxonomic category known as
(a) Phylum – Angiospermae
(b) Division – Angiospermae
(c) Class – Angiospermae
(d) Sereis – Polypetalae

Amongst the given taxonomic aids, how many are associated with preservation of specimens? Monograph, Flora, Key, Museums, Botanical Gardens, Catalogue, Herbarium, Manual
(a) One (b) Three
(c) Two (d) Four

In the following questions, a statement of Assertion is followed
by a statement of Reason.
(a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
(b) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false

Assertion : Taxon and category are different things.
Reason : Category shows hierarchical classification.

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

Assertion: Information given on the label of herbarium sheets does not include family.
Reason: Families are characterized on the basis of reproductive features of plant species only.

Assertion: Flora contains the actual account of habitat and distribution of plants of a given area.
Reason : Flora helps in correct identification.

Assertion : Panthera is a polytypic genera.
Reason : Panthera has specific epithets like leo, tigris and pardus.

Assertion : Biological concept of species is based on reproductive isolation.
Reason : Most accepted species concept was given by Linnaeus.

Assertion : Botanical Gardens are ex-situ conservation strategy of plants.
Reason : National botanical Garden is situated at Howrah.

Assertion : Scientific names for plants have been standardized through ICBN.
Reason : Naming system which used three word format was given by Linnaeus

Assertion : Two plants A and B are treated as two taxonomic species.
Reason : Both A and B are different in correlated characters.

Match the common name given in column I with their taxonomic category order given in column II and choose the correct combination from the options given below.

(a) A – I; B – II; C – IV; D – III
(b) A – IV; B – III; C – II; D – I
(c) A – II; B – IV; C – I; D – III
(d) A – III; B – IV; C – II; D – I

Match the common name given in column I with their taxonomic category family given in column II and choose the correct combination from the options given below.

(a) A – IV; B – III; C – II; D – I
(b) A – IV; B – III; C – I; D – II
(c) A – I; B – II; C – III; D – IV
(d) A – I; B – III; C – II; D – IV

Match column-I (Biological name) with column-II (Class) and choose the correct option.

(a) A – IV; B – II; C – I; D – III
(b) A – II; B – IV; C – III; D – I
(c) A – II; B – IV; C – I; D – III
(d) A – II; B – I; C – IV; D – III

Match column-I with column-II and choose the correct combination from the options given below.

(a) A – III; B – IV; C – I; D – II
(b) A – IV; B – III; C – I; D – II
(c) A – IV; B – III; C – II; D – I
(d) A – IV; B – I; C – III; D – II

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

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

Which of the following taxonomic category of housefly is incorrectly matched?
(a) Genus – Musca
(b) Family – Muscidae
(c) Order – Primata
(d) Class – Insecta

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

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

A B C D
(a) I II III IV
(b) III I II IV
(c) III I IV II
(d) II IV III I

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

Select the correct taxonomic aids given in column I with their feature given in columns II.

Select the correct Match.

Consider following diagram and fill the following blank spaces/boxes.

(a) A-Strain, B-Order, C-Sub kingdom
(b) A-species, B-order, C-kingdom
(c) A-subspecies, B-Tribe, C-Domain
(d) A-species, B-Cohort, C-Subdivision

Identify the correct sequence of taxonomic categories.
(a) Species → Genus → Order → Class → Family → Phylum/Division → Kingdom
(b) Species → Genus → Family → Class → Phylum/ Division → Order → Kingdom
(c) Species → Genus → Family → Order → Class → Phylum/Division → Kingdom
(d) Species → Genus → Family → Order → Class v Phylum/Division → Kingdom

Two plants can be conclusively said to belong to the same species if they
(a) have same number of chromosomes.
(b) can reproduce freely with each other and form seeds.
(c) have more than 90 per cent similar genes.
(d) look similar and possess identical secondary metabolites.

‘Taxa’ differs from ‘taxon’ due to being
(a) a higher taxonomic category than taxon.
(b) lower taxonomic category than taxon.
(c) the plural of taxon.
(d) the singular of taxon.

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.

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

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 germ plasm.
(d) they provide the natural habitat for wildlife.

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

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

The common characteristics between tomato and potato will be maximum at the level of their__________.
(a) genus (b) family
(c) order (d) division

Which one of the following is the first step in taxonomy ?
(a) Naming (b) Description
(c) Identification (d) Classification

Which of the following is the only taxonomic categories that has a real existence?
(a) Phylum (b) Species
(c) Genus (d) Kingdom

In angiosperm, characters of flowers are used in classification because
(a) flowers are attractive.
(b) flowers are large.
(c) character of flowers are conserved.
(d) none of the above.

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.

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.

The taxonomic unit ‘phylum’ in the classification of animals is equivalent to which hierarchial level in classification of plants ?
(a) Class (b) Order
(c) Division (d) Family

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

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

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.

Which of the following characters given below displays the description of lowest taxonomic category of organisms in the 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 organisms that resemble one another.
(d) It is a group of organisms that are closely related and share similar characteristics

Which of the following shows the correct example of taxonomic category – Genus?
(a) Potato, tomato and brinjal belong to Solanum.
(b) Monkey, gorilla and gibbon are placed in Mammalia.
(c) Solanum, Petunia, and Datura are placed in Solanacea.
(d) Mangifera indica, Solanum tuberosum, and Panthera leo.

“X” being a higher category is the assemblage of families which exhibit a few “Y” characters. The “Z” characters are less in a number as compared to different genera included in a family. Identify “X”, “Y”, and “Z”.
(a) X – Order; Y – Similar; Z – Similar
(b) X – Genus; Y – Similar; Z – Different
(c) X – Species; Y – Different; Z – Similar
(d) X – Class; Y – Different; Z – Different

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.


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