Freshwater Biology Of animal MCQs

1. Freshwater biology is the scientific study of:
a) Terrestrial animals
b) Saltwater organisms
c) Freshwater organisms
d) Avian organisms

2. Which of the following is not a characteristic of freshwater organisms?
a) Adaptation to low salinity
b) Ability to breathe underwater
c) Dependence on sunlight for photosynthesis
d) Adaptation to high oxygen levels

3. What is the term for the zone of freshwater bodies where sunlight penetrates and photosynthesis can occur?
a) Profundal zone
b) Littoral zone
c) Limnetic zone
d) Aphotic zone

4. Which of the following is not a major division of freshwater habitats?
a) Rivers and streams
b) Lakes and ponds
c) Oceans and seas
d) Wetlands and marshes

5. What is the scientific study of freshwater ecosystems called?
a) Freshwater ecology
b) Limnology
c) Freshwater chemistry
d) Freshwater physics

6. Which of the following is not a type of freshwater organism?
a) Fish
b) Mollusks
c) Echinoderms
d) Amphibians

7. What is the primary source of energy for most freshwater ecosystems?
a) Sunlight
b) Thermal vents
c) Chemical energy
d) Hydrothermal energy

8. Which of the following is not a major type of freshwater biome?
a) Rivers and streams
b) Lakes and ponds
c) Coral reefs
d) Wetlands and marshes

9. What is the term for the process by which freshwater organisms convert sunlight into chemical energy?
a) Photosynthesis
b) Chemosynthesis
c) Autotrophy
d) Heterotrophy

10. Which of the following is not a characteristic of freshwater algae?
a) Photosynthesis
b) Cellulose cell walls
c) Chlorophyll pigments
d) Heterotrophic nutrition

11. What is the primary role of phytoplankton in freshwater ecosystems?
a) Predation
b) Herbivory
c) Decomposition
d) Parasitism

12. Which of the following is not a major group of freshwater invertebrates?
a) Mollusks
b) Arthropods
c) Chordates
d) Annelids

13. What is the term for the process by which freshwater organisms take in dissolved oxygen from water?
a) Respiration
b) Osmoregulation
c) Osmosis
d) Diffusion

14. Which of the following is not a function of freshwater ecosystems?
a) Carbon sequestration
b) Oxygen production
c) Nitrogen fixation
d) Ozone depletion

15. What is the term for the area where a river meets the ocean?
a) Estuary
b) Headwater
c) Confluence
d) Delta

16. Which of the following is not a characteristic of freshwater fishes?
a) Possession of gills
b) Ectothermic
c) Live birth
d) Possession of scales

17. What is the term for the study of freshwater animal behavior?
a) Ethology
b) Freshwater physiology
c) Freshwater ecology
d) Freshwater zoology

18. Which of the following is not a major group of freshwater vertebrates?
a) Fish
b) Reptiles
c) Amphibians
d) Birds

19. What is the primary role of zooplankton in freshwater ecosystems?
a) Predation
b) Herbivory
c) Decomposition
d) Parasitism

20. Which of the following is not a major type of freshwater pollution?
a) Industrial waste
b) Agricultural runoff
c) Noise pollution
d) Thermal pollution

21. What is the term for the process by which freshwater organisms excrete waste into the water?
a) Excretion
b) Osmoregulation
c) Diffusion
d) Filtration

22. Which of the following is not a major group of freshwater invertebrates?
a) Mollusks
b) Arthropods
c) Chordates
d) Annelids

23. What is the primary role of phytoplankton in freshwater ecosystems?
a) Predation
b) Herbivory
c) Decomposition
d) Parasitism

24. Which of the following is not a function of freshwater ecosystems?
a) Carbon sequestration
b) Oxygen production
c) Nitrogen fixation
d) Ozone depletion

25. What is the term for the area where a river meets the ocean?
a) Estuary
b) Headwater
c) Confluence
d) Delta

26. Which of the following is not a characteristic of freshwater fishes?
a) Possession of gills
b) Ectothermic
c) Live birth
d) Possession of scales

27. What is the term for the study of freshwater animal behavior?
a) Ethology
b) Freshwater physiology
c) Freshwater ecology
d) Freshwater zoology

28. Which of the following is not a major group of freshwater vertebrates?
a) Fish
b) Reptiles
c) Amphibians
d) Birds

29. What is the primary role of zooplankton in freshwater ecosystems?
a) Predation
b) Herbivory
c) Decomposition
d) Parasitism

30. Which of the following is not a major type of freshwater pollution?
a) Industrial waste
b) Agricultural runoff
c) Noise pollution
d) Thermal pollution

31. What is the term for the process by which freshwater organisms excrete waste into the water?
a) Excretion
b) Osmoregulation
c) Diffusion
d) Filtration

32. Which of the following is not a major group of freshwater invertebrates?
a) Mollusks
b) Arthropods
c) Chordates
d) Annelids

33. What is the primary role of phytoplankton in freshwater ecosystems?
a) Predation
b) Herbivory
c) Decomposition
d) Parasitism

34. Which of the following is not a function of freshwater ecosystems?
a) Carbon sequestration
b) Oxygen production
c) Nitrogen fixation
d) Ozone depletion

35. What is the term for the area where a river meets the ocean?
a) Estuary
b) Headwater
c) Confluence
d) Delta

36. Which of the following is not a characteristic of freshwater fishes?
a) Possession of gills
b) Ectothermic
c) Live birth
d) Possession of scales

37. What is the term for the study of freshwater animal behavior?
a) Ethology
b) Freshwater physiology
c) Freshwater ecology
d) Freshwater zoology

38. Which of the following is not a major group of freshwater vertebrates?
a) Fish
b) Reptiles
c) Amphibians
d) Birds

39. What is the primary role of zooplankton in freshwater ecosystems?
a) Predation
b) Herbivory
c) Decomposition
d) Parasitism

40. Which of the following is not a major type of freshwater pollution?
a) Industrial waste
b) Agricultural runoff
c) Noise pollution
d) Thermal pollution

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