Question:
Underwater turtles respire with the help of ______.
Underwater turtles respire with the help of ______.
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Some aquatic turtles take up dissolved oxygen through sacs connected to the end of the digestive tract.
Updated On: Nov 12, 2026
- plasma membrane
- internal gills
- spiracles
- cloaca
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Turtles are reptiles that breathe air through lungs, but some aquatic species can stay submerged for a long time.
Step 2: Extra respiratory route
They have thin-walled, highly vascular sacs called bursae that open into the cloaca. Water is pumped in and out and dissolved oxygen diffuses into the blood. This is cloacal respiration.
Step 3: Other options
Internal gills and spiracles occur in fishes and insects, and plasma membrane respiration is seen at the cell level.
Final Answer:
Underwater turtles respire with the help of the cloaca. \[ \boxed{\text{(D) }\text{cloaca}} \]
Turtles are reptiles that breathe air through lungs, but some aquatic species can stay submerged for a long time.
Step 2: Extra respiratory route
They have thin-walled, highly vascular sacs called bursae that open into the cloaca. Water is pumped in and out and dissolved oxygen diffuses into the blood. This is cloacal respiration.
Step 3: Other options
Internal gills and spiracles occur in fishes and insects, and plasma membrane respiration is seen at the cell level.
Final Answer:
Underwater turtles respire with the help of the cloaca. \[ \boxed{\text{(D) }\text{cloaca}} \]
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