AIC SS 1 Biology 3rd C.A 2nd Term
  • 1. Which of the following is an example of a beneficial microorganism?
A) Virus causing the flu
B) Fungi causing athlete's foot
C) Bacteria aiding in digestion
D) Bacteria causing pneumonia
  • 2. Autotrophs are organisms that:
A) Depend on other organisms for food
B) Produce their own food
C) None of the above
D) Break down dead organic matter
  • 3. Which of the following is an example of a vector?
A) Bacteria causing food poisoning
B) Virus causing the common cold
C) Fungi causing athlete's foot
D) Mosquito transmitting malaria
  • 4. Which of the following is NOT a role of the Red Cross Society?
A) Providing humanitarian aid during disasters
B) Conducting medical research
C) Promoting health education
D) Blood donation and transfusion services
  • 5. Decomposers play a crucial role in ecosystems by:
A) Producing oxygen through photosynthesis
B) None of the above
C) Providing food for other organisms
D) Breaking down dead organic matter
  • 6. In the laboratory, turbidity can be measured with a ..............
A) Geiger muller counter
B) Spectrophotometer
C) Turbidometer
D) Speedometry
  • 7. Organisms referred to as causative agents and disease-inducing micro-organisms are......
A) Pathogens
B) Vectors
C) Antibodies
D) Antigens
  • 8. What are some problems associated with conservation?
A) Excessive funding and resources allocated to conservation efforts
B) Increased pollution levels in protected areas.
C) Lack of public awareness and participation
D) Extinction of species due to overprotection
  • 9. What is adaptation in living organisms?
A) The adjustment of organisms to their environmental conditions.
B) The process of evolution through natural selection.
C) The interdependence of organisms within an ecosystem.
D) The ability of organisms to change their habitat
  • 10. Which of the following structural adaptations is characteristic of fish?
A) Gills for respiration
B) Wings for flight
C) Strong jaws for hunting.
D) Scales for protection
  • 11. What are the sources, causes, and effects of air pollution?
A) Sources: Oil spills; Causes: Industrial waste; Effects: Water contamination.
B) Sources: Pesticides and herbicides; Causes: Deforestation; Effects: Soil erosion.
C) Sources: Noise from transportation; Causes: Overfishing; Effects: Disruption of aquatic ecosystems.
D) Sources: Industrial emissions; Causes: Burning fossil fuels; Effects: Respiratory illnesses.
  • 12. What measures can be taken to control soil pollution?
A) Increasing the use of chemical fertilizers.
B) Encouraging deforestation for urban development.
C) Implementing sustainable farming practices.
D) Disposing of hazardous waste in landfills.
  • 13. How do unicellular organisms and invertebrates reproduce?
A) Through sexual reproduction only.
B) They do not reproduce.
C) Through both sexual and asexual reproduction.
D) Through asexual reproduction only.
  • 14. Which type of reproduction occurs in amoeba?
A) Sexual reproduction.
B) Binary fission
C) Multiple fission.
D) Asexual reproduction
  • 15. Which of the following are examples of renewable resources that need to be conserved?
A) Plastic and synthetic materials.
B) Fossil fuels and minerals
C) Water and air.
D) Landfills and waste dumps.
  • 16. How can we ensure conservation of natural resources?
A) By using resources efficiently and promoting sustainable practices.
B) By relying solely on technological advancements to replace resources.
C) By ignoring the impact of human activities on the environment.
D) By overexploiting resources to meet increasing demands
  • 17. What is a structural adaptation seen in tadpoles?
A) Gills for respiration
B) Lungs for breathing in water
C) Legs for hopping on land.
D) Webbed feet for swimming
  • 18. One of the following is used for collecting tiny organisms that live in thw soil water.
A) Secchi disc
B) Pooter
C) Baermann funnel
D) Hydrophotometer
  • 19. ............ Is used to measure pressure.
A) Colorimeter
B) Hygrometer
C) Barometer
D) Photometer
  • 20. The diagrammatic representation of the food chain in which producers form the base and the carnivores form the apex is called ...........
A) Pyramid of energy
B) Pyramid
C) Pyramid of number
D) Dome
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