🌍 Diversity in Living Organisms – Class 9 Science MCQs

Section 2: Five Kingdom Classification – Monera, Protista & Fungi (Q26–Q50)

Q26. The kingdom Monera includes:

A. Bacteria and blue-green algae
B. Amoeba and Paramecium
C. Yeast and mushroom
D. Algae and fungi

✅ Correct Answer: A. Bacteria and blue-green algae

Explanation:

• A. Correct, Monera = prokaryotes (bacteria + cyanobacteria).
• B. Amoeba/Paramecium → Protista.
• C. Yeast/mushroom → Fungi.
• D. Wrong mix.

Q27. Monerans are:

A. Multicellular prokaryotes
B. Unicellular prokaryotes
C. Multicellular eukaryotes
D. Unicellular eukaryotes

✅ Correct Answer: B. Unicellular prokaryotes

Explanation:

• A. Prokaryotes are always unicellular.
• B. Correct, bacteria = unicellular prokaryotes.
• C. Wrong, eukaryotes.
• D. Protista, not Monera.

Q28. Cyanobacteria are also called:

A. Blue-green algae
B. Red algae
C. Brown algae
D. Green algae

✅ Correct Answer: A. Blue-green algae

Explanation:

• A. Correct, cyanobacteria = photosynthetic prokaryotes.
• B. Red algae = Rhodophyta.
• C. Brown algae = Phaeophyta.
• D. Green algae = Chlorophyta.

Q29. Cell wall of bacteria is made of:

A. Cellulose
B. Chitin
C. Peptidoglycan
D. Protein

✅ Correct Answer: C. Peptidoglycan

Explanation:

• A. Cellulose → Plants.
• B. Chitin → Fungi.
• C. Correct, bacteria have peptidoglycan walls.
• D. Protein → Not main component.

Q30. Protists are:

A. Unicellular prokaryotes
B. Multicellular prokaryotes
C. Unicellular eukaryotes
D. Multicellular eukaryotes

✅ Correct Answer: C. Unicellular eukaryotes

Explanation:

• A & B → Monera.
• C. Correct, Protista = unicellular eukaryotes (Amoeba, Paramecium).
• D. Plants/animals/fungi.

Q31. Amoeba belongs to kingdom:

A. Monera
B. Protista
C. Fungi
D. Plantae

✅ Correct Answer: B. Protista

Explanation:

• A. Prokaryotes.
• B. Correct, Amoeba = unicellular eukaryote.
• C. Fungi = non-photosynthetic.
• D. Plants = multicellular autotrophs.

Q32. Paramecium moves with the help of:

A. Pseudopodia
B. Cilia
C. Flagella
D. Fins

✅ Correct Answer: B. Cilia

Explanation:

• A. Amoeba uses pseudopodia.
• B. Correct, Paramecium uses cilia.
• C. Euglena uses flagella.
• D. Fins = in fish.

Q33. Euglena shows:

A. Only autotrophic nutrition
B. Only heterotrophic nutrition
C. Both autotrophic and heterotrophic nutrition
D. No nutrition

✅ Correct Answer: C. Both autotrophic and heterotrophic nutrition

Explanation:

• A. Not only autotrophic.
• B. Not only heterotrophic.
• C. Correct, Euglena = mixotroph (photosynthetic + heterotrophic).
• D. Wrong.

Q34. Which of the following are unicellular fungi?

A. Mushroom
B. Yeast
C. Mucor
D. Rhizopus

✅ Correct Answer: B. Yeast

Explanation:

• A. Mushroom = multicellular.
• B. Correct, yeast = unicellular fungus.
• C. Mucor = multicellular.
• D. Rhizopus = bread mould (multicellular).

Q35. Cell wall of fungi is made of:

A. Cellulose
B. Chitin
C. Peptidoglycan
D. Protein

✅ Correct Answer: B. Chitin

Explanation:

• A. Cellulose → Plants.
• B. Correct, fungi have chitinous cell walls.
• C. Bacteria.
• D. Not correct.

Q36. Mode of nutrition in fungi is:

A. Autotrophic
B. Heterotrophic
C. Parasitic only
D. Symbiotic only

✅ Correct Answer: B. Heterotrophic

Explanation:

• A. No photosynthesis.
• B. Correct, fungi absorb food (saprophytic, parasitic, symbiotic).
• C. Not always parasitic.
• D. Not always symbiotic.

Q37. Bread mould belongs to:

A. Monera
B. Protista
C. Fungi
D. Plantae

✅ Correct Answer: C. Fungi

Explanation:

• A. Bacteria.
• B. Amoeba, Euglena.
• C. Correct, Rhizopus (bread mould) is fungus.
• D. Wrong.

Q38. Lichens are symbiotic association of:

A. Algae and fungi
B. Bacteria and fungi
C. Algae and protozoa
D. Plants and fungi

✅ Correct Answer: A. Algae and fungi

Explanation:

• A. Correct, algae = photosynthesis + fungi = support.
• B. Wrong.
• C. Wrong.
• D. Too general.

Q39. Yeast is used in bakery because:

A. It produces alcohol
B. It produces CO₂ during respiration
C. It stores starch
D. It contains chlorophyll

✅ Correct Answer: B. It produces CO₂ during respiration

Explanation:

• A. True in brewing but bakery uses CO₂.
• B. Correct, CO₂ makes dough rise.
• C. Not main use.
• D. Fungi lack chlorophyll.

Q40. Which Protist causes malaria?

A. Amoeba
B. Plasmodium
C. Euglena
D. Paramecium

✅ Correct Answer: B. Plasmodium

Explanation:

• A. Amoeba → Amoebiasis.
• B. Correct, Plasmodium → malaria.
• C. Euglena harmless.
• D. Paramecium harmless.

Q41. Trypanosoma causes:

A. Malaria
B. Sleeping sickness
C. Typhoid
D. Cholera

✅ Correct Answer: B. Sleeping sickness

Explanation:

• A. Plasmodium → malaria.
• B. Correct, Trypanosoma → sleeping sickness.
• C. Salmonella → typhoid.
• D. Vibrio cholerae → cholera.

Q42. Fungi are mostly:

A. Autotrophic
B. Saprophytic
C. Parasitic only
D. Autotrophic and heterotrophic

✅ Correct Answer: B. Saprophytic

Explanation:

• A. Wrong.
• B. Correct, majority fungi = saprophytes (decomposers).
• C. Not only parasitic.
• D. Wrong.

Q43. Which is an example of symbiotic fungus?

A. Rhizopus
B. Lichen
C. Mushroom
D. Mucor

✅ Correct Answer: B. Lichen

Explanation:

• A. Bread mould → saprophytic.
• B. Correct, lichen = algae + fungi.
• C. Mushroom → saprophyte.
• D. Mucor → saprophyte.

Q44. The common edible mushroom belongs to class:

A. Ascomycetes
B. Basidiomycetes
C. Zygomycetes
D. Deuteromycetes

✅ Correct Answer: B. Basidiomycetes

Explanation:

• A. Yeast → Ascomycetes.
• B. Correct, mushrooms = Basidiomycetes.
• C. Rhizopus → Zygomycetes.
• D. Imperfect fungi.

Q45. Antibiotic penicillin is obtained from:

A. Yeast
B. Mushroom
C. Penicillium
D. Algae

✅ Correct Answer: C. Penicillium

Explanation:

• A. Used in baking.
• B. Edible fungus.
• C. Correct, Penicillium notatum → penicillin.
• D. Wrong.

Q46. Which disease is caused by fungi?

A. Ringworm
B. Malaria
C. Sleeping sickness
D. Cholera

✅ Correct Answer: A. Ringworm

Explanation:

• A. Correct, fungal infection of skin.
• B. Malaria = Plasmodium (Protist).
• C. Trypanosoma (Protist).
• D. Cholera (Bacteria).

Q47. Protists reproduce mainly by:

A. Budding
B. Binary fission
C. Spore formation
D. Conjugation

✅ Correct Answer: B. Binary fission

Explanation:

• A. Budding → Yeast.
• B. Correct, Amoeba/Paramecium reproduce by binary fission.
• C. Fungi → Spores.
• D. Some protists → Conjugation, but not main.

Q48. Saprophytes are organisms that:

A. Live on living hosts
B. Synthesize own food
C. Derive nutrition from dead matter
D. Depend on others for shelter

✅ Correct Answer: C. Derive nutrition from dead matter

Explanation:

• A. Parasites do this.
• B. Autotrophs.
• C. Correct, saprophytes feed on dead/decaying matter.
• D. Not definition.

Q49. Which group includes slime moulds?

A. Monera
B. Protista
C. Fungi
D. Plantae

✅ Correct Answer: B. Protista

Explanation:

• A. Prokaryotes.
• B. Correct, slime moulds classified under Protista.
• C. Not true fungi.
• D. Wrong.

Q50. Which of the following is a fungal multicellular structure?

A. Hyphae
B. Cilia
C. Flagella
D. Trichome

✅ Correct Answer: A. Hyphae

Explanation:

• A. Correct, hyphae = thread-like fungal filaments.
• B. Cilia = movement in protists.
• C. Flagella = Euglena.
• D. Trichome = plant hair.

Diversity in Living Organisms Class 9, CBSE Class 9 Science MCQs, NCERT Class 9 diversity questions, Class 9 Science exam practice, Online learning Science Class 9, diversity in living organisms class 9 mcqs with answers, cbse class 9 science diversity in living organisms multiple choice questions, ncert class 9 diversity in living organisms quiz online, important mcqs for cbse class 9 science diversity chapter, diversity in living organisms class 9 mcqs for online learning