Question:
Which one of the following pair is ammonotelic?
Which one of the following pair is ammonotelic?
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Ammonotelic animals are mostly aquatic, such as aquatic invertebrates and bony fishes.
Updated On: Nov 12, 2026
- Birds and protozoa
- Spiders and molluscs
- Land snails and protozoa
- Aquatic invertebrates and bony fishes
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Ammonotelic animals excrete ammonia, which is very toxic and highly soluble, so they need plenty of water.
Step 2: Identify the group
Aquatic invertebrates and bony fishes lose ammonia by diffusion across the body surface or gills.
Step 3: Why the others fail
Birds, land snails and spiders live on land and are uricotelic, so pairs containing them are wrong.
Final Answer:
The ammonotelic pair is aquatic invertebrates and bony fishes. \[ \boxed{\text{(D) }\text{Aquatic invertebrates and bony fishes}} \]
Ammonotelic animals excrete ammonia, which is very toxic and highly soluble, so they need plenty of water.
Step 2: Identify the group
Aquatic invertebrates and bony fishes lose ammonia by diffusion across the body surface or gills.
Step 3: Why the others fail
Birds, land snails and spiders live on land and are uricotelic, so pairs containing them are wrong.
Final Answer:
The ammonotelic pair is aquatic invertebrates and bony fishes. \[ \boxed{\text{(D) }\text{Aquatic invertebrates and bony fishes}} \]
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