The Living World Chapter-Wise Test 22

Correct answer Carries: 4.

Wrong Answer Carries: -1.

A taxonomist places the families Felidae and Canidae together because they share a few similar characters. Which taxonomic category has been formed?

Class Mammalia
Phylum Chordata
Order Carnivora
Genus Panthera
3

An order is an assemblage of related families that share a few similar characters. Felidae and Canidae are placed together in the order Carnivora.

Two groups of organisms possess fundamental similarities, but consistent morphological differences distinguish one group from the other. How should they be classified?

As two closely related species
As a single species because they show similarities
As members of different kingdoms
As organisms that cannot belong to the same genus
1

A species is a group of individual organisms with fundamental similarities. Distinct morphological differences are used to distinguish one closely related species from another.

A researcher identifies organisms, assigns scientific names, classifies them and examines their evolutionary relationships. Which field describes the complete investigation?

Identification alone
Nomenclature alone
Classification based only on economic use
Systematics
4

Systematics includes identification, nomenclature and classification and also considers evolutionary relationships among organisms.

A label bears the name Mangifera indica Linn. What information is conveyed by “Linn.”?

The plant belongs to a genus called Linn.
The species was first described by Linnaeus.
The species was first discovered in India.
The specific epithet has been shortened.
2

The abbreviated author name written after the specific epithet indicates the scientist who first described the species. “Linn.” indicates Linnaeus.

Fishes, amphibians, reptiles, birds and mammals are grouped together because they possess features such as a notochord and a dorsal hollow neural system. Which higher category includes these classes?

Order Carnivora
Family Felidae
Genus Panthera
Phylum Chordata
4

Related animal classes are grouped into a phylum. The classes containing fishes, amphibians, reptiles, birds and mammals are included in phylum Chordata.

The same organism is known by different local names in different regions. Which procedure most directly prevents confusion among biologists?

Selecting one regional name and rejecting all others
Assigning a standardised scientific name accepted throughout the world
Naming the organism according to its habitat
Classifying it only according to its economic use
2

Standardised nomenclature ensures that a particular organism is known by the same scientific name throughout the world, avoiding confusion caused by different local names.

A specimen has been identified as Musca domestica. Which additional information should be entered in its classification record?

Family Hominidae and order Primata
Family Felidae and order Carnivora
Family Muscidae and order Diptera
Family Poaceae and order Poales
3

Musca domestica is the housefly. It belongs to the genus Musca, family Muscidae and order Diptera.

A community groups organisms according to whether they provide food, clothing or shelter. Which historical approach does this resemble?

The earliest classification based on the uses of organisms
Classification based on evolutionary relationships
Classification based on scientific names
Classification based only on taxonomic rank
1

The earliest classifications were based on the usefulness of organisms to humans, particularly as sources of food, clothing and shelter.

A biologist characterises an organism, establishes its identity, assigns it a scientific name and places it in appropriate categories. Which field includes all these activities?

Nomenclature alone
Taxonomy
Identification alone
Evolutionary systematics alone
2

Characterisation, identification, classification and nomenclature are the basic processes of taxonomy.

A zoologist has correctly identified a new animal and now needs internationally accepted principles for assigning its scientific name. Which code should be consulted?

International Code for Botanical Nomenclature
International Union for Conservation of Nature
World Health Organization
International Code of Zoological Nomenclature
4

The International Code of Zoological Nomenclature provides internationally accepted principles for assigning scientific names to animals.

Performance Summary

Score:

Category Details
Total Attempts:
Total Skipped:
Total Wrong Answers:
Total Correct Answers:
Time Taken:
Average Time Taken per Question:
Accuracy:
0