Kingdom Monera - UNSOLVED PRACTICE SET
Chapter: Diversity in Living Organisms | Topic: Kingdom Monera Bacteria Cyanobacteria
KINGDOM MONERA - UNSOLVED PRACTICE SET
Topic: Kingdom Monera Bacteria Cyanobacteria
Multiple Choice Questions
Q1. Bacteria are classified under Kingdom Monera because they are:
- Multicellular and eukaryotic
- Unicellular and prokaryotic
- Multicellular and prokaryotic
- Unicellular and eukaryotic
Q2. The cell wall of bacteria is composed of:
- Cellulose
- Chitin
- Peptidoglycan (murein)
- Lignin
Q3. Cyanobacteria are also called:
- Green algae
- Blue-green algae
- Red algae
- Brown algae
Q4. Which of the following is NOT a characteristic of cyanobacteria?
- They are prokaryotic
- They can perform photosynthesis
- They have a true nucleus
- They are found in aquatic habitats
Q5. Bacteria reproduce primarily by:
- Binary fission
- Budding
- Fragmentation
- Spore formation
Short Answer Questions
Q6. Describe the structure of a typical bacterial cell. Why is it considered prokaryotic?
Q7. What are cyanobacteria? Give TWO examples and explain their ecological importance.
Q8. Differentiate between autotrophic and heterotrophic bacteria with examples.
Q9. Explain the role of bacteria in nitrogen fixation. Why is this process important for agriculture?
Long Answer Questions
Q10. Draw a well-labelled diagram of a bacterial cell. Label the cell wall, cell membrane, cytoplasm, nucleoid, ribosomes, flagellum (if present), and capsule (if present). Explain why bacteria can survive in extreme conditions.
Q11. Describe the economic importance of bacteria. Discuss both beneficial and harmful roles of bacteria in human life, agriculture, and industry.
APPLICATION / ANALYSIS
Q12. A farmer in Punjab notices that his wheat crop is not growing well despite using chemical fertilisers. A soil test reveals that the soil lacks nitrogen-fixing bacteria.
(a) Which nitrogen-fixing bacteria are typically found in the root nodules of leguminous plants?
(b) Why are these bacteria called "natural fertilisers"? Explain the process of nitrogen fixation.
(c) The farmer decides to grow peas (a legume) in rotation with wheat. How would this help improve soil fertility for the next wheat crop?
Q13. During the COVID-19 pandemic, there was increased awareness about the importance of handwashing and sanitisation to kill bacteria and viruses.
(a) Why are some bacteria (like those in our gut) beneficial while others (like Salmonella) cause disease?
(b) A student uses antibiotic soap daily to kill all bacteria on their hands. Is this a good practice? Explain the potential consequences.
(c) Cyanobacteria are being explored as a source of biofuel. What properties of cyanobacteria make them suitable for this purpose?