The Living World Chapter-Wise Test 19

Correct answer Carries: 4.

Wrong Answer Carries: -1.

A student writes the mango’s biological name by hand as Mangifera indica and underlines both words together. Which correction follows the rules of nomenclature?

Both words should begin with capital letters.
Only the specific epithet should be underlined.
The generic name and specific epithet should be underlined separately.
The specific epithet should be written before the generic name.
3

When a biological name is handwritten, the generic name and specific epithet are underlined separately. The generic name begins with a capital letter, while the specific epithet begins with a small letter.

The same organism is known by different local names in different regions. Which procedure would most directly remove this confusion?

Assigning an additional local name in every region
Assigning a standardised scientific name accepted by biologists
Classifying the organism only according to its economic use
Using the name of its habitat as its biological name
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 biologist characterises an organism, determines its identity, assigns a scientific name and places it in appropriate categories. Which field includes all these processes?

Nomenclature alone
Identification alone
Classification alone
Taxonomy
4

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

A human is placed in the family Hominidae and the class Mammalia. Which category lies between these two ranks?

Primata
Chordata
Homo
sapiens
1

Humans belong to the family Hominidae, order Primata and class Mammalia. Therefore, Primata lies between Hominidae and Mammalia.

A taxonomist is comparing newly collected organisms. Which set of information should be considered in a modern taxonomic study?

Only their local names and economic uses
Only their external colour and size
Only their habitats and geographical locations
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.

Fishes, amphibians, reptiles, birds and mammals are grouped into a common higher category in animal classification. Which category is it?

Order
Family
Phylum
Genus
3

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.

Solanum tuberosum, Solanum melongena and Solanum nigrum are compared. Which conclusion is correct?

They are different species belonging to the same genus.
They are three names for the same species.
They belong to three different genera.
Their specific epithets represent a common family.
1

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

A tiger and a lion belong to Panthera, while a domestic cat belongs to Felis. All three are placed in Felidae. Which conclusion follows from their taxonomic positions?

All three must belong to the same species.
The tiger and lion share more characteristics with each other than either shares with the cat.
The domestic cat shares more characteristics with the tiger than the lion does.
The tiger and lion belong to different families.
2

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

A scientist proposes a scientific name for an organism without first determining exactly which organism the name represents. Which essential step has been omitted?

Grouping the organism according to its economic use
Placing the organism directly in a kingdom
Studying only its geographical distribution
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.

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

International Code for Botanical Nomenclature
International Code of Zoological Nomenclature
International Union for Conservation of Nature
World Health Organization
2

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

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