The Living World Chapter-Wise Test 18

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following taxonomic ranks is NOT commonly used in zoological classification?

Phylum
Division
Class
Order
2

Division is a taxonomic rank used in plant classification, whereas zoological classification uses Phylum.

What role does classification play in conservation biology?

It helps in identifying species at risk of extinction
It focuses only on domesticated species
It ignores biodiversity threats
It eliminates the need for species protection
1

Classification helps in identifying species at risk of extinction and aids in biodiversity conservation.

Which of the following statements about phylogenetic classification is correct?

It classifies organisms based on their evolutionary relationships.
It ignores genetic information.
It only considers external morphology.
It does not include fossil evidence.
1

Phylogenetic classification groups organisms based on evolutionary history, using genetic and fossil evidence.

Which of the following statements about taxonomic hierarchy is correct?

Lower taxonomic levels have more similarities among organisms
Higher taxonomic levels have more similarities among organisms
Species is the broadest taxonomic category
Phylum includes fewer organisms than Family
1

Lower taxonomic levels (such as species and genus) contain organisms with more similarities than higher levels.

Which of the following is correct about molecular taxonomy?

It classifies organisms based on their DNA and protein sequences.
It ignores evolutionary relationships.
It only considers external morphology.
It is not useful for classifying microorganisms.
1

Molecular taxonomy classifies organisms by comparing DNA, RNA, and protein sequences to determine evolutionary relationships.

How do molecular techniques contribute to modern taxonomy?

They help in understanding evolutionary relationships
They replace the need for morphological classification
They are used only for plant classification
They have no impact on taxonomy
1

Molecular techniques such as DNA sequencing help in determining evolutionary relationships between organisms.

Which of the following statements about binomial nomenclature is incorrect?

It consists of two names: Genus and species
Genus name starts with a capital letter
Species name starts with a capital letter
Scientific names are italicized when printed
3

In binomial nomenclature, the species name always starts with a lowercase letter.

Which feature makes species the most basic unit of classification?

Species share identical physical characteristics
Individuals of a species can interbreed and produce fertile offspring
Species are the largest unit of classification
Species include multiple genera
2

Species are defined as a group of individuals capable of interbreeding and producing fertile offspring.

Which of the following is correct about systematics?

Systematics only deals with naming species.
Systematics studies the evolutionary relationships of organisms.
Systematics ignores molecular data.
Systematics is unrelated to taxonomy.
2

Systematics studies evolutionary relationships among organisms and includes taxonomy, classification, and phylogeny.

Which statement about systematics is correct?

It only deals with classification
It is based only on morphological traits
It includes classification, identification, and nomenclature
It ignores evolutionary relationships
3

Systematics is a broad field that includes classification, identification, nomenclature, and evolutionary relationships.

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