The Living World Chapter-Wise Test 18

Correct answer Carries: 4.

Wrong Answer Carries: -1.

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

Phylum
Order
Division
Family
3

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

A specimen is identified as Musca domestica. Which additional classification is correct?

Family Felidae and order Carnivora
Family Poaceae and order Poales
Family Hominidae and order Primata
Family Muscidae and order Diptera
4

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

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

Placement in a kingdom
Identification
Classification based on use
Formation of a taxonomic hierarchy
2

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

A tiger and lion belong to the genus Panthera, whereas a domestic cat belongs to Felis. All three belong to Felidae. Which conclusion is correct?

The tiger and lion share more characteristics with each other than either shares with the cat.
All three belong to the same genus because they belong to Felidae.
The domestic cat belongs to the genus Panthera.
The tiger and lion belong to different families.
1

The tiger and lion share the same genus, while the cat shares only their family. Members of a lower taxon share more characteristics than members grouped only at a higher rank.

An animal possesses a notochord and a dorsal hollow neural system. In which phylum should it be placed?

Arthropoda
Mollusca
Animalia
Chordata
4

Animals possessing common features such as a notochord and a dorsal hollow neural system are placed in phylum Chordata.

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

Evolutionary relationships
Taxonomic hierarchy
Uses of organisms
Scientific nomenclature
3

The earliest classifications were based on the uses of organisms because humans needed sources of food, clothing and shelter.

A student prints the tiger’s biological name as panthera Tigris. Which corrected form follows the rules of nomenclature?

Panthera Tigris
Panthera tigris
panthera tigris
tigris Panthera
2

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

Two groups of organisms show fundamental similarities, but consistent morphological differences distinguish one group from the other. How should the two groups be treated?

As two closely related species
As a single species because both have similarities
As two different kingdoms
As unrelated organisms that cannot share a genus
1

Species contain 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 study?

Nomenclature alone
Classification alone
Identification alone
Systematics
4

Systematics includes identification, nomenclature and classification and also takes evolutionary relationships among organisms into account.

A specimen belongs to the genus Triticum and the order Poales. Which family should be assigned to it?

Anacardiaceae
Poaceae
Muscidae
Hominidae
2

Wheat belongs to the genus Triticum, family Poaceae and order Poales.

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