Biological Classification: 8 MCQs with Explanations

Darwin's work "On the Origin of Species" outlined evolution by natural selection.

All animals in the kingdom Animalia are multicellular, eukaryotic heterotrophs that obtain nutrition by ingesting other organisms.

Homo habilis (''handy man'') is one of the earliest members of the genus Homo and is associated with the use of simple stone tools.

Paramecium is a unicellular organism and belongs to the kingdom Protista, not the kingdom Animalia, which is exclusively multicellular.

O₂²⁻ (peroxide ion) has all electrons paired (bond order 1), making it diamagnetic. O₂, O₂⁻, and B₂ have unpaired electrons and are paramagnetic.

Whittaker's five-kingdom system includes Monera, Protista, Fungi, Plantae, and Animalia. Fungi form a separate kingdom due to their absorptive heterotrophic nutrition.

Convergent evolution produces analogous structures (e.g., wings of bats and insects) with similar function but different evolutionary origins.

Divergent evolution produces homologous structures (e.g., forelimbs of mammals) with similar anatomy but different functions due to adaptation to different environments.

Niche is the correct answer to “Which one of the following is referred as the species occupation”. Items of this type are drawn from the Biological Classification syllabus of Pakistani competitive exams, where the fact is tested verbatim.

arthropoda is the correct answer to “In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen”. Items of this type are drawn from the Biological Classification syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Sub- phylum vertebrate is also known as Craniata .

50,000 is the correct answer to “The phylum chrordata comprise about how many species”. Items of this type are drawn from the Biological Classification syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Second largest phylum of invertebrates is Mollusca .

Kingdom protista includes 27 phyla.

Which of the following statement about Kingdom Protista is incorrect They only include unicellular aquatic eukaryotic organisms .

The Kingdom of recyclers is known as kingdom Fungi .

According to two kingdom classification fungi were placed in kingdom Plantae .

50% is the correct answer to “How many species of ascomycota occur in lichen symbiotic association”. Items of this type are drawn from the Biological Classification syllabus of Pakistani competitive exams, where the fact is tested verbatim.

200 is the correct answer to “How many species of mushrooms are edible”. Items of this type are drawn from the Biological Classification syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Those fungi which can grow only on their living host and cannot be grown on available defined growth culture medium e.g. various mildews and most rust species are called Obligate parasitic fungi .

100000 is the correct answer to “How many species of fungi are known till now”. Items of this type are drawn from the Biological Classification syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Other name for Kingdom monera is Prokaryotae .

Amoeba belongs to which kingdom Protista .

Competition between species will be greatest if they attempt to occupy the same Niche .

So far over 1 number of species of animals are known.

Five kingdom classification was proposed by Robert Whittaker .

Organisms of which of the following kingdom have absorptive mode of nutrition Fungi .

Maximum number of species of living things on earth are Insects .

Group of living organisms of the same species living in the same place at the same time is called Population .

Euglena belongs to the kingdom Protista .

The number of species of organisms currently known to science is 2500000.

Which of the following is the basic unit of classification Species .

Phyletic lineage is the correct answer to “An unbroken series of species arranged in ancestors to descendent sequence with each later species having evolved from one that immediately preceded it is called”. Items of this type are drawn from the Biological Classification syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Population is the correct answer to “Group of living organisms of the same species living in the same place at the same time is called”. Items of this type are drawn from the Biological Classification syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Members of one species inhabiting the same are form Population .