Class 9 Five Kingdom Classification Mock Test (ICSE)

Topics in Five Kingdom Classification

• Need for classification
• Binomial nomenclature
• Monera, Protista, Fungi, Plantae and Animalia
• Characteristics with examples

Five Kingdom Classification practice questions with answers

1. Q1Multiple choice·1 mark
   Which of the following kingdoms comprises unicellular eukaryotic organisms such as Amoeba, Paramecium, and Euglena?

   1. (a)Plantae
   2. (b)Fungi
   3. (c)Monera
   4. (d)Protista
   Show answer and step marks

   1. Correct option: (d) Protista+1

   Answer: (d)
2. Q2Multiple choice·1 mark
   Which of the following organisms belongs to the kingdom Fungi and possesses a chitinous cell wall?

   1. (a)Amoeba
   2. (b)Rhizopus
   3. (c)Paramecium
   4. (d)Spirogyra
   Show answer and step marks

   1. Correct option: (b) Rhizopus+1

   Answer: (b)
3. Q3Multiple choice·1 mark
   Which of the following best describes the primary basis used in biological classification to organize diverse organisms into orderly groups?

   1. (a)Similarities and differences in habitat and geographical distribution
   2. (b)Similarities and differences in body structure and form
   3. (c)Similarities and differences in lifespan and rate of reproduction
   4. (d)Similarities and differences in their usefulness to human beings
   Show answer and step marks

   1. Correct option: (b) Similarities and differences in body structure and form. Organisms are grouped by shared structural and morphological characters, not by where they live or how useful they are.+1

   Answer: (b)
4. Q4Multiple choice·1 mark
   According to the rules of binomial nomenclature, how should a scientific name be correctly written in print?

   1. (a)In plain type, genus with a capital letter, species with a small letter
   2. (b)In italics, genus with a capital letter, species with a capital letter
   3. (c)In italics, genus with a capital letter, species with a small letter
   4. (d)In italics, genus with a small letter, species with a capital letter
   Show answer and step marks

   1. Correct option: (c) In italics, genus with a capital letter, species with a small letter, as in Homo sapiens; when handwritten, the two names are underlined separately instead.+1

   Answer: (c)
5. Q5Short answer·2 marks
   State any two key characteristics of Kingdom Monera and name one organism belonging to this kingdom.
   Show answer and step marks

   1. First characteristic, any one of: they are prokaryotic, with no nuclear membrane (a nucleoid instead of a true nucleus); they lack membrane-bound organelles such as mitochondria; they are mostly unicellular; most have a cell wall made of peptidoglycan; they reproduce mainly by binary fission; their nutrition may be autotrophic or heterotrophic; or any other valid characteristic.+0.5
   2. Second characteristic, a different one from the same list.+0.5
   3. Example, any one of: bacteria such as Escherichia coli or Lactobacillus; blue-green algae such as Nostoc or Anabaena; Mycoplasma; or any other valid moneran.+1

   Answer: Any two of: prokaryotic (no nuclear membrane), no membrane-bound organelles, mostly unicellular, peptidoglycan cell wall, binary fission, autotrophic or heterotrophic nutrition. Example: bacteria (e.g. E. coli), Nostoc or Anabaena.
6. Q6Long answer·4 marks
   (a) State two main reasons why the classification of living organisms is essential in the study of biology. [2] (b) How does biological classification help in understanding evolutionary relationships among organisms? Explain with a suitable example. [2]
   Show answer and step marks

   1. (a) First reason, any one of: it makes the study of the vast variety of organisms systematic and manageable; it helps in identifying organisms correctly; it shows the similarities and differences among groups of organisms; it gives a common basis for other branches of biology such as ecology and medicine; or any other valid reason.+1
   2. (a) Second reason, a different one from the same list.+1
   3. (b) Explanation: Classification arranges organisms into hierarchical groups based on shared characteristics, which reflects their common ancestry and evolutionary descent.+1
   4. (b) Example, any one of: birds share scales on the legs and egg-laying with reptiles, showing that birds evolved from reptile-like ancestors; humans and apes share a similar skeleton, so they are grouped together as primates; whales are grouped with mammals, not fish, because they have hair, lungs and suckle their young; or any other valid example.+1

   Answer: (a) Any two of: it makes the study of diverse organisms systematic, helps identify organisms, shows similarities and differences among groups, gives a basis for other branches of biology. (b) Grouping by shared characters reflects common ancestry; e.g. birds share leg scales and egg-laying with reptiles, showing they evolved from reptile-like ancestors.

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