The Living World Chapter-Wise Test 10

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following correctly represents the taxonomic hierarchy in descending order?

Kingdom → Phylum → Class → Order → Family → Genus → Species
Kingdom → Class → Phylum → Order → Family → Genus → Species
Species → Genus → Family → Order → Phylum → Class → Kingdom
Kingdom → Phylum → Family → Order → Class → Genus → Species
1

The descending hierarchy in animals is Kingdom → Phylum → Class → Order → Family → Genus → Species. In plants, division is used in place of phylum.

Which statement correctly describes a species?

It is a group of related genera.
It is the highest category of classification.
It is a group of organisms occupying the same habitat.
It is a group of individual organisms with fundamental similarities.
4

A species is a group of individual organisms with fundamental similarities. One species can be distinguished from a closely related species by distinct morphological differences.

Panthera and Felis are placed together in Felidae. What does this demonstrate?

A genus contains several related families.
A family contains related genera with some common characteristics.
An order contains only one genus.
A species contains several unrelated genera.
2

A family is a group of related genera. Felidae includes the related genera Panthera and Felis.

Who gave the system of binomial nomenclature described in the chapter?

Ernst Mayr
Charles Darwin
Carolus Linnaeus
Gregor Mendel
3

Carolus Linnaeus gave the system of binomial nomenclature, in which each biological name has a generic name and a specific epithet.

Felidae and Canidae are placed together in which higher taxonomic category?

Mammalia
Chordata
Panthera
Carnivora
4

Felidae and Canidae are related families included in the order Carnivora. An order is an assemblage of families sharing a few similar characters.

What is the taxonomic status of Panthera tigris?

It is a genus.
It is the biological name of a species.
It is a family.
It is a phylum.
2

Panthera tigris is the biological name of the tiger species. Panthera is the generic name, while tigris is the specific epithet.

Which combination of information forms the basis of modern taxonomic studies?

Only the economic uses and local names of organisms
Only external appearance and habitat
External and internal structure, cell structure, development and ecological information
Only the reproductive structures of plants
3

Modern taxonomic studies use external and internal structure, cell structure, developmental processes and ecological information.

Why is standardised scientific nomenclature necessary?

It ensures that a particular organism is known by the same name throughout the world.
It permits every region to assign a different scientific name.
It eliminates the need to identify an organism.
It restricts biological names to economically useful organisms.
1

Local names vary from place to place. Standardised nomenclature ensures that a particular organism is known by the same scientific name throughout the world.

An organism is moved from its species category towards its kingdom. Which change is expected?

The number of shared characteristics increases.
The category becomes more specific.
The number of included organisms decreases.
The number of shared characteristics decreases.
4

As one moves from species towards kingdom, categories become broader and the number of common characteristics shared by their members decreases.

Why is classification necessary for studying living organisms?

It assigns names without describing organisms.
It groups organisms into convenient categories because studying all organisms individually is nearly impossible.
It restricts biological study to familiar organisms.
It groups organisms only according to their economic uses.
2

Because it is nearly impossible to study all living organisms individually, classification groups them into convenient categories and makes their study manageable.

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