The Living World Chapter-Wise Test 20

Correct answer Carries: 4.

Wrong Answer Carries: -1.

A specimen is identified as Mangifera indica. Which additional classification is correct?

Family Poaceae and order Poales
Family Solanaceae and order Polymoniales
Family Muscidae and order Diptera
Family Anacardiaceae and order Sapindales
4

Mangifera indica is mango. It belongs to the genus Mangifera, family Anacardiaceae and order Sapindales.

A plant taxon is placed above class but below kingdom. Which category should be assigned to it?

Phylum
Division
Family
Genus
2

In plant classification, related classes are assigned to a division. Division corresponds to phylum in animal classification.

A student prints the human biological name as homo Sapiens. Which corrected form follows the rules of nomenclature?

Homo Sapiens
homo sapiens
Homo sapiens
sapiens Homo
3

The generic name is written first and begins with a capital letter. The specific epithet follows and begins with a small letter. Both words are italicised when printed.

A taxonomist is comparing several newly identified organisms. Which set of information should be used in a modern taxonomic study?

Only local names and economic uses
Only external colour and body size
Only habitat and geographical distribution
External and internal structure, cell structure, development and ecological information
4

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

An animal taxonomist needs internationally accepted principles for assigning a scientific name to a newly identified animal. Which code should be consulted?

International Code of Zoological Nomenclature
International Code for Botanical Nomenclature
International Union for Conservation of Nature
World Health Organization
1

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

Solanum tuberosum, Solanum melongena and Solanum nigrum are compared. Which conclusion is supported by their biological names?

They are three names for the same species.
They are different species belonging to the same genus.
They belong to three different genera.
Their specific epithets represent a common family.
2

All three names contain the generic name Solanum but have different specific epithets. They therefore represent different species belonging to the same genus.

A scientist assigns a biological name before determining exactly which organism the name represents. Which essential process has been omitted?

Grouping the organism according to its economic use
Placing the organism directly in a kingdom
Studying only its habitat
Identification through correct description of the organism
4

Nomenclature is possible only when the organism has been correctly described and the organism to which the name is attached is known. This process is identification.

Early humans grouped organisms according to whether they supplied food, clothing or shelter. Which basis of classification does this illustrate?

Uses of organisms
Evolutionary relationships
Scientific nomenclature
Taxonomic rank alone
1

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

A label reads Mangifera indica Linn. What does “Linn.” indicate?

The plant belongs to the family Linnaceae.
The plant was first found in India.
The species was first described by Linnaeus.
The specific epithet has been abbreviated.
3

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 into a common higher category because they share features such as a notochord and a dorsal hollow neural system. Which category is formed?

Order Carnivora
Phylum Chordata
Family Felidae
Genus Panthera
2

Classes containing fishes, amphibians, reptiles, birds and mammals are grouped into phylum Chordata because they share features such as a notochord and a dorsal hollow neural system.

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