Unicellular Organisms and Their Classification: Multiple Choice Questions"
The world of unicellular organisms is vast and varied. From their cellular structures to their classifications, there's much to learn. Test your knowledge on unicellular eukaryotes, prokaryotes, and their respective kingdoms with these multiple-choice questions based on the provided article.
**Questions:**
1. What defines a unicellular eukaryote?
- A) Lack of a defined nucleus
- B) Multiple cells with no mitochondria
- C) Single-celled organism with a defined nucleus and organelles
- D) Contains only mitochondria
- **Answer: C**
2. Which of the following is a unicellular eukaryote?
- A) Phytoplankton
- B) Elephant
- C) Oak tree
- D) Human
- **Answer: A**
3. How many cells do unicellular organisms contain?
- A) Zero
- B) Two
- C) Many
- D) One
- **Answer: D**
4. Which of the following is NOT a prokaryotic organism?
- A) Bacteria
- B) Archaea
- C) Protozoa
- D) Fungi
- **Answer: C**
5. Which domain consists of only single-celled eukaryotic organisms?
- A) Fungi
- B) Animals
- C) Protists
- D) Plants
- **Answer: C**
6. Kingdom Monera consists of which cellular arrangement?
- A) Multicellular eukaryotic
- B) Prokaryotic with nuclear membrane
- C) Unicellular eukaryotic
- D) Unicellular prokaryotic
- **Answer: D**
7. Which of the following is NOT classified as a protist?
- A) Slime molds
- B) Algae
- C) Protozoans
- D) Bacteria
- **Answer: D**
8. Archaea lack which cellular feature?
- A) Mitochondria
- B) Cell nuclei
- C) Cytoplasm
- D) Cell wall
- **Answer: B**
9. What do all prokaryotes have in common?
- A) They are multicellular.
- B) They have a defined nucleus.
- C) They are unicellular.
- D) They belong to the animal kingdom.
- **Answer: C**
10. Which kingdom contains both unicellular and multicellular organisms?
- A) Fungi
- B) Protists
- C) Plants
- D) Animals
- **Answer: A**
11. Cell division in organisms is essential for what purpose?
- A) Slowing growth
- B) Decreasing cell numbers
- C) Growth, development, and reproduction
- D) Maintaining the same cell count
- **Answer: C**
12. Which kingdom primarily consists of unicellular organisms with a prokaryotic cell arrangement?
- A) Fungi
- B) Monera
- C) Protists
- D) Animals
- **Answer: B**
13. Which of the following organisms is a eukaryote?
- A) Bacteria
- B) Archaea
- C) Protozoa
- D) Viruses
- **Answer: C**
14. What differentiates eukaryotic organisms from prokaryotic organisms?
- A) Presence of mitochondria
- B) Presence of a defined nucleus
- C) The number of cells
- D) Type of cell wall
- **Answer: B**
15. What do zooplankton primarily consist of?
- A) Algae
- B) Protozoa
- C) Fungi
- D) Bacteria
- **Answer: B**
16. Which group of organisms lacks a nuclear membrane?
- A) Protists
- B) Monera
- C) Plants
- D) Animals
- **Answer: B**
17. Which domain do archaea belong to?
- A) Eukaryotes
- B) Protists
- C) Prokaryotes
- D) Fungi
- **Answer: C**
18. Which of the following is a characteristic of the protists kingdom?
- A) They are multicellular.
- B) They are classified into plants, animals, and fungi.
- C) They consist of similar cells or single cells.
- D) They lack mitochondria.
- **Answer: C**
19. Slime molds are classified under which group?
- A) Plant-like algae
- B) Animal-like protozoans
- C) Fungus-like
- D) Bacteria-like
- **Answer: C**
20. Which organism is primarily a member of Kingdom Monera?
- A) Oak tree
- B) Mushroom
- C) Human
- D) Bacteria
- **Answer: D**
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