Part 5 – Taxonomic Categories & Hierarchy (25 MCQs)

Part 5 – Taxonomic Categories & Hierarchy (25 MCQs)

Q1. The basic and smallest unit of classification is:

A. Genus
B. Species
C. Family
D. Order

Answer: B. Species

• A. Genus → Incorrect, broader than species.
• B. Species → Correct, fundamental unit of classification.
• C. Family → Incorrect, higher rank.
• D. Order → Incorrect, even higher.

Q2. The correct sequence of taxonomic hierarchy from lower to higher is:

A. Kingdom → Class → Order → Family → Genus → Species
B. Species → Genus → Family → Order → Class → Phylum → Kingdom
C. Species → Family → Genus → Order → Class → Kingdom → Phylum
D. Kingdom → Phylum → Class → Family → Order → Genus → Species

Answer: B. Species → Genus → Family → Order → Class → Phylum → Kingdom

• A. Incorrect sequence.
• B. Correct standard hierarchy.
• C. Incorrect order of categories.
• D. Incorrect sequence.

Q3. The category higher than genus but lower than order is:

A. Class
B. Family
C. Phylum
D. Species

Answer: B. Family

• A. Class → Higher than order.
• B. Family → Correct, between genus and order.
• C. Phylum → Higher category.
• D. Species → Lower than genus.

Q4. Which taxonomic category directly ranks above species?

A. Order
B. Class
C. Genus
D. Family

Answer: C. Genus

• A. Order → Incorrect.
• B. Class → Incorrect.
• C. Genus → Correct, contains related species.
• D. Family → Higher.

Q5. Which category contains organisms that share the maximum similarities?

A. Class
B. Genus
C. Species
D. Family

Answer: C. Species

• A. Class → Too broad.
• B. Genus → Somewhat similar.
• C. Species → Correct, most closely related group.
• D. Family → Broader than genus.

Q6. Panthera leo and Panthera tigris belong to the same:

A. Species
B. Genus
C. Family only
D. Order only

Answer: B. Genus

• A. Species → Incorrect, different species.
• B. Genus → Correct, both belong to genus Panthera.
• C. Family only → Incorrect, family Felidae is higher.
• D. Order only → Incorrect, broader level.

Q7. A group of similar species constitutes:

A. Family
B. Genus
C. Order
D. Class

Answer: B. Genus

• A. Family → Group of genera.
• B. Genus → Correct, contains similar species.
• C. Order → Group of families.
• D. Class → Group of orders.

Q8. The category that includes related families is:

A. Genus
B. Class
C. Order
D. Species

Answer: C. Order

• A. Genus → Incorrect, contains species.
• B. Class → Contains orders.
• C. Order → Correct, group of families.
• D. Species → Smallest unit.

Q9. Which is the broadest taxonomic category?

A. Kingdom
B. Species
C. Genus
D. Family

Answer: A. Kingdom

• A. Correct → Largest grouping.
• B. Incorrect → Smallest unit.
• C. Incorrect.
• D. Incorrect.

Q10. The category directly above order is:

A. Species
B. Family
C. Class
D. Genus

Answer: C. Class

• A. Species → Incorrect.
• B. Family → Below order.
• C. Class → Correct, above order.
• D. Genus → Much lower.

Q11. The plant Solanum tuberosum (potato) belongs to the family:

A. Poaceae
B. Solanaceae
C. Fabaceae
D. Malvaceae

Answer: B. Solanaceae

• A. Poaceae → Grasses.
• B. Solanaceae → Correct family of potato.
• C. Fabaceae → Pea family.
• D. Malvaceae → Cotton, hibiscus.

Q12. The domestic dog (Canis familiaris) belongs to the order:

A. Felidae
B. Carnivora
C. Rodentia
D. Primata

Answer: B. Carnivora

• A. Felidae → Family of cats.
• B. Carnivora → Correct order of dog.
• C. Rodentia → Rats and mice.
• D. Primata → Monkeys, apes, humans.

Q13. The correct taxonomic hierarchy for man is:

A. Animalia → Mammalia → Primata → Hominidae → Homo → sapiens
B. Animalia → Chordata → Mammalia → Primata → Hominidae → Homo → sapiens
C. Animalia → Mammalia → Hominidae → Homo → sapiens
D. Animalia → Primata → Homo → sapiens

Answer: B. Animalia → Chordata → Mammalia → Primata → Hominidae → Homo → sapiens

• A. Incorrect → Missing phylum.
• B. Correct full hierarchy.
• C. Incorrect → Missing phylum and class.
• D. Incorrect → Incomplete.

Q14. Which taxonomic category is directly above phylum?

A. Order
B. Kingdom
C. Class
D. Family

Answer: B. Kingdom

• A. Order → Much lower.
• B. Kingdom → Correct, highest after phylum.
• C. Class → Below phylum.
• D. Family → Below order.

Q15. Which one of the following pairs is correctly matched?

A. Wheat – Poaceae
B. Mango – Rosaceae
C. Potato – Poaceae
D. Sunflower – Fabaceae

Answer: A. Wheat – Poaceae

• A. Correct → Wheat belongs to family Poaceae.
• B. Incorrect → Mango is in Anacardiaceae.
• C. Incorrect → Potato is Solanaceae.
• D. Incorrect → Sunflower is Asteraceae.

Q16. Which taxonomic rank comes between phylum and order?

A. Genus
B. Species
C. Class
D. Family

Answer: C. Class

• A. Genus → Lower level.
• B. Species → Lowest level.
• C. Class → Correct, between phylum and order.
• D. Family → Between order and genus.

Q17. The correct sequence for classification of Homo sapiens is:

A. Animalia → Chordata → Mammalia → Primata → Hominidae → Homo → sapiens
B. Plantae → Chordata → Mammalia → Primata → Homo → sapiens
C. Animalia → Arthropoda → Mammalia → Primata → Homo → sapiens
D. Animalia → Chordata → Mammalia → Carnivora → Homo → sapiens

Answer: A. Animalia → Chordata → Mammalia → Primata → Hominidae → Homo → sapiens

• A. Correct → Accepted hierarchy.
• B. Incorrect → Humans are not plants.
• C. Incorrect → Not arthropods.
• D. Incorrect → Not carnivores.

Q18. Which group includes organisms of different genera but with common characters?

A. Genus
B. Family
C. Species
D. Order

Answer: B. Family

• A. Genus → Contains only related species.
• B. Family → Correct, contains related genera.
• C. Species → Too specific.
• D. Order → Higher category.

Q19. All plants with seeds but without flowers belong to:

A. Pteridophyta
B. Gymnosperms
C. Angiosperms
D. Bryophyta

Answer: B. Gymnosperms

• A. Pteridophyta → No seeds.
• B. Gymnosperms → Correct, seed-bearing without flowers.
• C. Angiosperms → Flowering plants.
• D. Bryophyta → No vascular tissues or seeds.

Q20. Which of the following correctly represents a taxonomic category?

A. Dog – Canis
B. Cat – Carnivora
C. Mango – Plantae
D. All of these

Answer: D. All of these

• A. Dog belongs to genus Canis.
• B. Cat belongs to order Carnivora.
• C. Mango belongs to kingdom Plantae.
• D. Correct, all are valid examples.

Q21. The order “Primata” includes:

A. Lion, Tiger, Leopard
B. Man, Monkey, Gorilla
C. Frog, Toad, Salamander
D. Rat, Rabbit, Squirrel

Answer: B. Man, Monkey, Gorilla

• A. Incorrect → Carnivora.
• B. Correct → Primates include man and apes.
• C. Incorrect → Amphibia.
• D. Incorrect → Rodentia.

Q22. Which taxonomic rank is directly below kingdom in hierarchy?

A. Order
B. Phylum/Division
C. Class
D. Genus

Answer: B. Phylum/Division

• A. Incorrect → Much lower.
• B. Correct → Next to kingdom.
• C. Incorrect → Below phylum.
• D. Incorrect → Very low.

Q23. The family “Felidae” includes:

A. Lion and Tiger
B. Dog and Wolf
C. Cow and Buffalo
D. Frog and Salamander

Answer: A. Lion and Tiger

• A. Correct → Both belong to Felidae.
• B. Incorrect → Dogs/wolves = Canidae.
• C. Incorrect → Bovidae.
• D. Incorrect → Amphibia.

Q24. The genus Homo belongs to family:

A. Hylobatidae
B. Pongidae
C. Hominidae
D. Cercopithecidae

Answer: C. Hominidae

• A. Incorrect → Lesser apes.
• B. Incorrect → Great apes.
• C. Correct → Family of humans.
• D. Incorrect → Old world monkeys.

Q25. The taxonomic hierarchy is also known as:

A. Taxonomic aid
B. Linnaean hierarchy
C. Natural classification
D. Systematics

Answer: B. Linnaean hierarchy

• A. Incorrect → Tools for taxonomy.
• B. Correct → Proposed by Linnaeus.
• C. Incorrect → Classification type.
• D. Incorrect → Broader study.

✅ Part 5 Completed – 25 MCQs
This section covered taxonomic hierarchy, ranks (species → kingdom), examples, and classification of humans, animals, and plants.

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