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Questions and Answers
What is the main function of gills in fishes?
What is the main function of gills in fishes?
- To filter out harmful substances from the water
- To provide a large surface area for oxygen uptake and carbon dioxide release (correct)
- To aid in buoyancy control
- To regulate water temperature
Which part of the gills is richly supplied with blood?
Which part of the gills is richly supplied with blood?
- Gill arches
- Gill rakers
- Tiny filaments (correct)
- Gill covers
What distinguishes gills from other fish respiratory organs?
What distinguishes gills from other fish respiratory organs?
- They have a large surface area for gas exchange (correct)
- They have a high flow rate of water
- They have complex structure for buoyancy control
- They are located near the tail
