Ammonotelism
Study of organisms that excrete ammonia, a highly toxic and soluble nitrogenous waste, and their adaptations.
What is Ammonotelism?
A process of excreting nitrogenous waste in the form of ammonia.
Key points
- Define ammonotelism and identify its primary excretory product.
- List examples of ammonotelic organisms.
- Explain the physiological and environmental reasons for ammonotelism.
- Compare ammonotelism with other forms of nitrogenous waste excretion.
Common exam trap
Confusing ammonotelism with ureotelism or uricotelism.
Definitions
- Term
Ammonotelism
- Meaning
A process of excreting nitrogenous waste in the form of ammonia.
- Term
Ammonia (NH3)
- Meaning
A colorless gas with a pungent odor, formed as a waste product from the breakdown of proteins and nucleic acids.
- Term
Nitrogenous Waste
- Meaning
Waste products containing nitrogen, primarily urea, uric acid, and ammonia, produced during the metabolism of proteins and nucleic acids.
Learning objectives
Define ammonotelism and identify its primary excretory product.
List examples of ammonotelic organisms.
Explain the physiological and environmental reasons for ammonotelism.
Compare ammonotelism with other forms of nitrogenous waste excretion.
Prerequisites
Basic understanding of nitrogenous waste products.
Knowledge of animal physiology and habitats.
Understanding of osmosis and diffusion.
Common mistakes
Confusing ammonotelism with ureotelism or uricotelism.
Underestimating the water requirement for ammonia excretion.
Assuming terrestrial animals can be ammonotelic.
Keywords
Ammonotelism
Ammonia
Nitrogenous waste
Excretion
Aquatic animals
Bony fishes
Tadpoles
Gills
Toxicity
Water requirement
Practice preview
Which of the following terms correctly describes the excretion of ammonia as the primary nitrogenous waste product?…
easy
What are the key characteristics of ammonia as a nitrogenous waste product?…
easy
Why do ammonotelic animals typically require a large amount of water for excretion?…
medium