The Living World
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
Which of the following is a characteristic of all living beings?
A.Response to external stimuli
B.Movement from one place to another
C.Presence of a heart
D.Growth by addition of matter to the surface
- 2.
In Binomial Nomenclature, the two words are written in Latin because:
A.Latin is a dead language
B.Latin is very easy to speak
C.Latin was the language of the common people
D.To show respect to ancient Greeks
- 3.
The National Botanical Research Institute (NBRI) is situated at:
A.New Delhi
B.Lucknow
C.Kolkata
D.Mumbai
- 4.
Growth and reproduction are mutually exclusive events in:
A.Bacteria
B.Unicellular algae
C.Higher plants and animals
D.Amoeba
- 5.
Modern taxonomic studies consider the external and internal structures of organisms, their cell structure, developmental processes, and ecological information. These features form the foundation for the basic processes required to study biodiversity. Identify the missing process labeled 'X' in the sequence of taxonomic procedures shown below.
A.Identification
B.Phylogeny
C.Genetic Variation
D.Speciation
- 6.
Which of the following is NOT a true statement about museums?
A.They have collections of preserved plant and animal specimens.
B.Insects are preserved in insect boxes after collecting, killing, and pinning.
C.They only contain living specimens of rare plants.
D.Skeletons of animals are also often displayed.
- 7.
The name of the author who first described a species appears:
A.Before the generic name
B.Between the generic name and specific epithet
C.After the specific epithet in abbreviated form
D.In italics at the end of the sentence
- 8.
Systematics refers to the study of:
A.Diversity of kinds of organisms and their evolutionary relationships.
B.Identification and classification of plants and animals.
C.Nomenclature and identification of plants and animals.
D.Internal structure of organisms.
- 9.
What is the common feature between 'Class Mammalia' and 'Class Insecta' that justifies their placement in the same Kingdom?
A.Presence of a cell wall
B.Autotrophic mode of nutrition
C.Multicellularity and eukaryotic cell structure without cell walls
D.Presence of a dorsal hollow nerve cord
- 10.
Which of the following groups of families are included in the order Polymoniales based on floral characters?
A.Solanaceae and Convolvulaceae
B.Poaceae and Anacardiaceae
C.Felidae and Canidae
D.Muscidae and Hominidae
Download the worksheet for The Living World - Biodiversity to practice offline. It includes additional chapter-level practice questions.
Need for classification
SubtopicNeed for classification under The Living World for Grade 11 CBSE.
Preview questions (no answers)
- 1.
The group 'Mammalia' in the taxonomic hierarchy represents a:
A.Genus
B.Family
C.Class
D.Order
- 2.
Which of the following provides a standardized set of rules for the nomenclature of bacteria?
A.ICZN
B.ICBN
C.ICNB
D.ICTV
- 3.
If two plants belong to the same Family, they must also belong to the same:
A.Genus
B.Species
C.Order
D.Variety
- 4.
The process of classifying organisms into different taxa is known as:
A.Taxonomy
B.Physiology
C.Evolution
D.Identification
- 5.
Which of the following is NOT a benefit of classifying living organisms?
A.Easier identification of organisms
B.Understanding the relationship between different groups
C.Establishing a globally accepted naming system
D.Predicting the exact future evolution of a species
- 6.
What role does 'Taxonomy' play in our understanding of agricultural pests?
A.It helps in the precise identification of the pest species to apply the correct control measures
B.It helps in counting the total number of insects in a field
C.It ensures that all insects are called by the same name regardless of their species
D.It is used to create new types of chemical fertilizers
- 7.
Which of the following best explains why classification is called a 'dynamic' science?
A.It is only studied by people who move around a lot
B.It changes and improves as new species and new information are discovered
C.It is a science that only deals with fast-moving animals
D.It refers to the fact that names are changed every day for no reason
- 8.
What is the primary goal of 'Gamma Taxonomy' within the broader field of systematics?
A.The study of intra-specific variations and evolutionary processes within species.
B.The naming of species based on their ecological importance.
C.The categorization of organisms based on their DNA sequence alone.
D.The study of fossils to determine the origin of life.
- 9.
If two organisms are in the same 'Class' but different 'Orders', which of the following must be true?
A.They are also in the same Phylum and Kingdom.
B.They belong to the same Genus but different Species.
C.They share more traits than two organisms in the same Family.
D.They have no common ancestors in their evolutionary history.
- 10.
Why is 'Classification' considered a dynamic and ever-changing field rather than a static one?
A.New scientific evidence (genetic, fossil, etc.) frequently leads to the reorganization of existing taxa.
B.Taxonomists are required by law to change the names of species every fifty years.
C.Organisms evolve so quickly that they become new species every few months.
D.The International Code of Nomenclature requires that names be updated to reflect modern slang.
Download the worksheet for The Living World - Need for classification to practice offline. It includes additional chapter-level practice questions.
Three domains of life
SubtopicThree domains of life under The Living World for Grade 11 CBSE.
Preview questions (no answers)
- 1.
Which of the following is the most inclusive category in the hierarchy of biological classification?
A.Domain
B.Kingdom
C.Phylum
D.Species
- 2.
The presence of a gene is used to study the phylogeny of which domains?
A.Bacteria and Archaea
B.Eukarya only
C.Bacteria only
D.All three domains
- 3.
Which domain is known for containing halophiles (salt-loving organisms)?
A.Eukarya
B.Archaea
C.Bacteria
D.Fungi
- 4.
Which domain includes mosses, ferns, and flowering plants?
A.Archaea
B.Bacteria
C.Eukarya
D.Monera
- 5.
Which domain contains eukaryotic organisms that are primarily unicellular and do not fit into the kingdoms of plants, animals, or fungi?
A.Archaea
B.Bacteria
C.Eukarya (Protista)
D.Monera
- 6.
The three-domain system provides a classification that is more 'natural' because it is based on:
A.Morphological similarities
B.Artificial characteristics
C.Phylogenetic relationships
D.Geographical distribution
- 7.
What is the key difference in the ribosome structure between the three domains?
A.Bacteria have 80S, others have 70S
B.Archaea have 80S, others have 70S
C.Eukarya have 80S, others have 70S
D.All three domains have identical 70S ribosomes
- 8.
The presence of a cytoskeleton composed of actin and tubulin homologs (MreB and FtsZ) is found in which domains?
A.Only Eukarya
B.Only Bacteria
C.All three domains (Bacteria, Archaea, and Eukarya)
D.Only Bacteria and Archaea
- 9.
Which type of RNA polymerase is responsible for transcribing mRNA in Archaea?
A.A single RNA polymerase with 4 subunits.
B.A single RNA polymerase with 8-13 subunits.
C.Three different RNA polymerases (I, II, and III).
D.A DNA-dependent RNA polymerase that is sensitive to Rifampicin.
- 10.
What happens to the ribosomes of Eukarya when exposed to the antibiotic Puromycin?
A.They are unaffected.
B.They are inhibited, as Puromycin mimics an aminoacyl-tRNA.
C.They dissociate into 30S and 50S subunits.
D.They begin to translate mRNA in the 3' to 5' direction.
Download the worksheet for The Living World - Three domains of life to practice offline. It includes additional chapter-level practice questions.
Taxonomy and Systematics
SubtopicTaxonomy and Systematics under The Living World for Grade 11 CBSE.
Preview questions (no answers)
- 1.
The suffix '-aceae' is used for which taxonomic category?
A.Order
B.Family
C.Class
D.Division
- 2.
The National Botanical Research Institute (NBRI) is located in:
A.Howrah
B.Kew
C.Lucknow
D.Darjeeling
- 3.
Biological names are generally printed in italics to indicate their:
A.English origin
B.Latin origin
C.Scientific importance
D.Ease of reading
- 4.
Which category contains organisms with the least number of common characters?
A.Genus
B.Family
C.Class
D.Kingdom
- 5.
In the taxonomic hierarchy, different genera are grouped into a single family based on specific shared characteristics. According to the relationship shown in the flowchart, which of the following criteria is primarily used to characterize plant genera like , , and into the family ?
A.Floral characters only, excluding vegetative structures
B.Both vegetative and reproductive features of the plant species
C.Geographical distribution and environmental niche specialization
D.Only the mode of seed dispersal and seed coat texture
- 6.
Manuals are useful taxonomic aids because they:
A.Contain information on only one taxon
B.Provide information for identification of names of species found in an area
C.Are analytical in nature
D.Are large collections of dried specimens
- 7.
Which of the following is not a botanical garden?
A.Royal Botanical Garden, Kew
B.Indian Botanical Garden, Howrah
C.National Botanical Research Institute, Lucknow
D.National Zoological Park, Delhi
- 8.
In systematic biology, phylogenetic trees (cladograms) are used to classify organisms based on their evolutionary history. Based on the cladogram provided, if a taxonomist defines a group that includes the common ancestor 'Ancestor 2' and its descendants 'Species B' and 'Species C', but excludes 'Species D', which of the following terms correctly describes this type of taxonomic grouping?
A.Monophyletic group
B.Polyphyletic group
C.Paraphyletic group
D.Holophyletic group
- 9.
Identify the correct statement about 'Museums'.
A.Insects are preserved in insect boxes after stuffing and pinning.
B.Larger animals like birds and mammals are usually stuffed and preserved.
C.Museums are only for the display of live animals.
D.Only plant specimens are kept in museums; animal specimens are kept in zoological parks.
- 10.
In taxonomy, a 'Grade' refers to:
A.A group of organisms sharing a similar level of complexity or organizational level.
B.A single line of descent in a phylogenetic tree.
C.The rank between Family and Genus.
D.The quality of the herbarium specimen.
Download the worksheet for The Living World - Taxonomy and Systematics to practice offline. It includes additional chapter-level practice questions.
Concept of species and taxonomical hierarchy
SubtopicConcept of species and taxonomical hierarchy under The Living World for Grade 11 CBSE.
Preview questions (no answers)
- 1.
In the taxonomic hierarchy, the 'Taxon' represents:
A.A rank in hierarchy
B.Any level of grouping of organisms
C.The unit of classification
D.The method of naming
- 2.
Which of the following taxonomical categories has a suffix ending in '-idae' for animals?
A.Order
B.Family
C.Class
D.Phylum
- 3.
The group of all organisms belonging to the same species in a specific area is called a:
A.Taxon
B.Population
C.Genus
D.Order
- 4.
Which of the following is the correct scientific name for Wheat?
A.B.C.D. - 5.
In the classification of plants, the presence of 'vessel-bearing' flowers and seeds enclosed in fruits characterizes which category level for Mango?
A.Division Angiospermae
B.Class Dicotyledonae
C.Order Sapindales
D.Family Anacardiaceae
- 6.
The taxonomic group 'Muscidae' represents which level of classification for the housefly?
A.Genus
B.Family
C.Order
D.Class
- 7.
Which level of classification is characterized by having the maximum number of shared features?
A.Kingdom
B.Phylum
C.Class
D.Species
- 8.
Select the correct combination of Taxon and its respective Category from the options below.
A.Taxon: Angiospermae; Category: Division
B.Taxon: Family; Category: Solanaceae
C.Taxon: Homo; Category: Species
D.Taxon: Mammalia; Category: Phylum
- 9.
If we assign values to the taxonomic levels such that Species = 1 and Kingdom = 7, which level represents the most generalized assemblage of characters?
A.Level 1
B.Level 4
C.Level 7
D.Level 0
- 10.
A researcher is studying two different species of the same genus. They will definitely share the same:
A.Family, Order, and Class
B.Specific epithet
C.Morphological traits in every aspect
D.Geographical habitat
Download the worksheet for The Living World - Concept of species and taxonomical hierarchy to practice offline. It includes additional chapter-level practice questions.
Binomial nomenclature
SubtopicBinomial nomenclature under The Living World for Grade 11 CBSE.
Preview questions (no answers)
- 1.
What is the scientific name of the Neem tree?
A.B.C.D. - 2.
Linnaeus used the binomial system for the first time in which year for plants?
A.1758
B.1753
C.1853
D.1653
- 3.
Which of the following is written according to the rules of binomial nomenclature?
A.B.C.D.FELIS leo
- 4.
In the binomial system, what does the second word represent?
A.The common name
B.The specific epithet
C.The genus name
D.The family name
- 5.
Before Linnaeus popularized binomial nomenclature, organisms were often described using long descriptive phrases. This system was called:
A.Monomial nomenclature
B.Polynomial nomenclature
C.Trinomial nomenclature
D.Vernacular nomenclature
- 6.
Which of the following is a drawback of using local names instead of scientific names?
A.Local names are too short
B.The same name may be used for different organisms in different regions
C.Local names are difficult to pronounce
D.Local names are not based on characteristics
- 7.
Identify the correct sequence of categories in the hierarchy where binomial nomenclature is applied to name the lowest level.
A.Family -> Genus -> Species
B.Genus -> Family -> Species
C.Species -> Genus -> Family
D.Order -> Genus -> Species
- 8.
In scientific writing, if the genus name is mentioned once, it can be abbreviated in subsequent mentions (e.g., '. '). What is the requirement for this abbreviation?
A.It must be the first two letters of the genus.
B.It must be followed by a period and the full specific epithet.
C.It can only be done if the genus name is more than 10 letters.
D.It is only allowed in zoology, not botany.
- 9.
Which of the following is a 'later synonym'?
A.A name published before 1753.
B.A name for a taxon that already has a validly published name.
C.A name that was rejected because it was a tautonym.
D.The first name ever given to a species.
- 10.
The suffix '-oideae' in plant taxonomy indicates which rank, and how does it relate to the binomial name?
A.Family; it is the first part of the binomial.
B.Subfamily; it is not part of the binomial.
C.Order; it replaces the genus name.
D.Tribe; it is written after the specific epithet.
Download the worksheet for The Living World - Binomial nomenclature to practice offline. It includes additional chapter-level practice questions.