Biology MCQs with Answers
1. Who proposed the Five Kingdom Classification system?
- Aristotle
- Carl Linnaeus
- Robert H. Whittaker
- Charles Darwin
Answer: C) Robert H. Whittaker
2. In the Five Kingdom Classification, bacteria are placed in which kingdom?
- Protista
- Monera
- Fungi
- Plantae
Answer: B) Monera
3. Which kingdom includes unicellular eukaryotic organisms?
- Protista
- Monera
- Fungi
- Animalia
Answer: A) Protista
4. Which of the following organisms belongs to the kingdom Fungi?
- Amoeba
- Bacteria
- Mushroom
- Spirogyra
Answer: C) Mushroom
5. Cyanobacteria are also known as:
- Green algae
- Blue-green algae
- Red algae
- Brown algae
Answer: B) Blue-green algae
6. Which kingdom includes organisms with chitin in their cell walls?
- Plantae
- Protista
- Monera
- Fungi
Answer: D) Fungi
7. Which of the following is NOT a characteristic of organisms in the kingdom Monera?
- Prokaryotic cell structure
- Presence of membrane-bound organelles
- Unicellular body organization
- Absence of true nucleus
Answer: B) Presence of membrane-bound organelles
8. Which organism is known as the connecting link between plants and animals?
- Euglena
- Amoeba
- Paramecium
- Chlamydomonas
Answer: A) Euglena
9. Which mode of nutrition is commonly found in fungi?
- Autotrophic
- Photosynthetic
- Saprophytic
- Holozoic
Answer: C) Saprophytic
10. Which type of cell organization is found in Kingdom Monera?
- Multicellular eukaryotic
- Unicellular prokaryotic
- Multicellular prokaryotic
- Unicellular eukaryotic
Answer: B) Unicellular prokaryotic