Podcast
Questions and Answers
Which of the following is a unique feature of Chondrichthyes' stomach?
Which of the following is a unique feature of Chondrichthyes' stomach?
- It has a J-shaped orientation (correct)
- It is capable of digesting bones
- It is located in the center of the body
- It is highly acidic
What is the purpose of spiracles in cartilaginous fish?
What is the purpose of spiracles in cartilaginous fish?
- To help them see in murky water
- To allow them to breathe while stationary (correct)
- To aid in digestion
- To regulate their body temperature
How do Chondrichthyes maintain osmotic concentration in their blood?
How do Chondrichthyes maintain osmotic concentration in their blood?
- By excreting excess salt through their gills
- By drinking large amounts of seawater
- By having a specialized organ for osmoregulation
- By retaining nitrogen-containing compounds in their blood (correct)
Flashcards
Chondrichthyes Stomach Shape
Chondrichthyes Stomach Shape
Chondrichthyes' stomach has a distinctive J-shaped orientation.
Spiracles Function
Spiracles Function
Spiracles allow cartilaginous fish to breathe even when they are not actively swimming.
Osmotic Regulation in Chondrichthyes
Osmotic Regulation in Chondrichthyes
Chondrichthyes keep nitrogen compounds in their blood to maintain osmotic balance relative to seawater.
