Environmental Toxicology Of animal MCQs

1. What is the primary route of exposure to environmental toxins in aquatic animals? A) Dermal absorption B) Inhalation C) Ingestion D) Injection Answer: C) Ingestion 2. Which of the following is not a heavy metal pollutant commonly found in aquatic environments? A) Lead B) Mercury C) Copper D) Carbon dioxide Answer: D) Carbon dioxide 3. What is the term used to describe the accumulation of toxins in organisms at higher trophic levels? A) Biomagnification B) Bioaccumulation C) Biotransformation D) Biodegradation Answer: A) Biomagnification 4. Which of the following is a potential effect of pesticide exposure on birds? A) Increased fertility B) Enhanced immune function C) Eggshell thinning D) Decreased metabolism Answer: C) Eggshell thinning 5. What is the primary target organ of dioxin toxicity in animals? A) Liver B) Kidneys C) Heart D) Brain Answer: A) Liver 6. Which of the following is a common symptom of lead poisoning in animals? A) Increased appetite B) Decreased blood pressure C) Neurological impairment D) Enhanced reproductive success Answer: C) Neurological impairment 7. What is the term used to describe the ability of a substance to cause harm to an organism? A) Toxicity B) Bioaccumulation C) Biodiversity D) Biodegradation Answer: A) Toxicity 8. Which of the following is a source of polychlorinated biphenyls (PCBs) in aquatic ecosystems? A) Volcanic eruptions B) Industrial discharge C) Soil erosion D) Solar radiation Answer: B) Industrial discharge 9. Which of the following is a potential effect of herbicide exposure on amphibians? A) Increased resistance to disease B) Deformed limbs C) Improved reproductive success D) Enhanced lung capacity Answer: B) Deformed limbs 10. What is the primary route of exposure to air pollutants in terrestrial animals? A) Dermal absorption B) Inhalation C) Ingestion D) Injection Answer: B) Inhalation 11. Which of the following is a common symptom of pesticide poisoning in insects? A) Increased longevity B) Enhanced reproduction C) Neurological impairment D) Improved immune function Answer: C) Neurological impairment 12. What is the primary target organ of mercury toxicity in marine mammals? A) Liver B) Kidneys C) Brain D) Heart Answer: C) Brain 13. Which of the following is a potential effect of plastic pollution on sea turtles? A) Enhanced shell strength B) Improved digestion C) Ingestion of plastic debris D) Increased buoyancy Answer: C) Ingestion of plastic debris 14. What is the term used to describe the breakdown of chemicals into simpler compounds by microorganisms? A) Biodegradation B) Bioaccumulation C) Biomagnification D) Biotransformation Answer: A) Biodegradation 15. Which of the following is a common symptom of oil spill exposure in marine birds? A) Increased buoyancy B) Enhanced flight performance C) Feather damage D) Improved reproductive success Answer: C) Feather damage 16. What is the primary target organ of arsenic toxicity in terrestrial animals? A) Liver B) Kidneys C) Lungs D) Intestines Answer: A) Liver 17. Which of the following is a source of polycyclic aromatic hydrocarbons (PAHs) in aquatic environments? A) Agricultural runoff B) Marine debris C) Oil spills D) Urbanization Answer: C) Oil spills 18. Which of the following is a potential effect of insecticide exposure on fish? A) Enhanced gill function B) Improved swimming ability C) Impaired reproduction D) Increased appetite Answer: C) Impaired reproduction 19. What is the term used to describe the process of a substance becoming more concentrated in living organisms as it moves through the food chain? A) Biomagnification B) Bioaccumulation C) Biodegradation D) Biotransformation Answer: A) Biomagnification 20. Which of the following is a common symptom of heavy metal poisoning in terrestrial animals? A) Increased bone density B) Enhanced cognitive function C) Neurological impairment D) Improved immune response Answer: C) Neurological impairment