NEET 2025 MCQ with Answer Explanation : “The Living World”.

71. The correct sequence of taxonomic categories from lowest to highest rank is:
    a) Kingdom > Phylum > Class > Order > Family > Genus > Species
    b) Species > Genus > Family > Order > Class > Phylum > Kingdom
    c) Genus > Species > Order > Family > Class > Phylum > Kingdom
    d) Family > Genus > Order > Class > Phylum > Species

Answer: b) Species > Genus > Family > Order > Class > Phylum > Kingdom

Explanation:
The correct sequence in ascending order of hierarchy is: Species, Genus, Family, Order, Class, Phylum, and Kingdom.

72. A group of organisms that belong to the same species and live in the same area is called a:
    a) Family
    b) Population
    c) Genus
    d) Ecosystem

Answer: b) Population

Explanation:
A population is a group of individuals of the same species that live in the same geographic area and can interbreed.

73. Which of the following is a feature of the five-kingdom system of classification?
    a) Separate kingdom for prokaryotic organisms
    b) All unicellular organisms placed in one kingdom
    c) Viruses included as a separate kingdom
    d) All multicellular organisms placed in one kingdom

Answer: a) Separate kingdom for prokaryotic organisms

Explanation:
In the five-kingdom system, prokaryotes are placed in the kingdom Monera, distinguishing them from eukaryotic organisms.

74. Which of the following organisms is NOT placed in the kingdom Protista?
    a) Amoeba
    b) Paramecium
    c) Algae
    d) Fungi

Answer: d) Fungi

Explanation:
Fungi belong to their own kingdom (Fungi), while organisms like Amoeba, Paramecium, and algae are classified under Protista.

75. Which one of the following characteristics is common to all living organisms?
    a) Reproduction
    b) Cellular organization
    c) Ability to photosynthesize
    d) Growth by external accretion

Answer: b) Cellular organization

Explanation:
All living organisms have cellular organization, either as unicellular or multicellular structures. Not all organisms reproduce, photosynthesize, or grow by accretion.

76. Which of the following taxonomic categories includes organisms with the most similarities?
    a) Class
    b) Family
    c) Species
    d) Phylum

Answer: c) Species

Explanation:
Species is the most specific taxonomic category and includes organisms that are most similar to each other and can interbreed to produce fertile offspring.

77. In the scientific name Panthera leo, the word leo refers to:
    a) Order
    b) Genus
    c) Species
    d) Family

Answer: c) Species

Explanation:
In the binomial nomenclature system, the second word (leo in Panthera leo) represents the species name.

78. Which of the following is an incorrect match?
    a) Bacteria – Prokaryotic
    b) Amoeba – Eukaryotic
    c) Yeast – Multicellular
    d) Algae – Eukaryotic

Answer: c) Yeast – Multicellular

Explanation:
Yeast is a unicellular organism, not multicellular. It belongs to the kingdom Fungi.

79. Which of the following are considered living organisms but do not exhibit all characteristics of life?
    a) Fungi
    b) Bacteria
    c) Viruses
    d) Protozoa

Answer: c) Viruses

Explanation:
Viruses are considered to be at the borderline of living and non-living. They cannot reproduce or perform metabolic activities without a host.

80. Which of the following kingdoms includes autotrophic and multicellular organisms?
    a) Animalia
    b) Fungi
    c) Plantae
    d) Monera

Answer: c) Plantae

Explanation:
Kingdom Plantae consists of multicellular, autotrophic organisms that produce their own food through photosynthesis.