Which of the following is an example of 'Neoteny' (paedomorphosis) found in some amphibians?
Show answer and explanation
Correct answer: An Axolotl keeping larval gills and staying aquatic as a sexually mature adult
Neoteny is the retention of juvenile traits in the adult stage. The Axolotl (Ambystoma mexicanum) is a classic example, as it fails to undergo metamorphosis and remains gilled and aquatic throughout its adult life.
Practice all 20 Chordata: Protochordata to Amphibia questions
Keep practicing
More Chordata: Protochordata to Amphibia questions
- In fish, the 'conus arteriosus' or 'bulbus arteriosus' is a part of which system?
- Which membrane in the amphibian ear is responsible for receiving sound vibrations from the environment?
- What is the biological significance of the 'Mid-Atlantic Ridge' to the life cycle of the European Eel (Anguilla anguilla)?
- The 'urostyle' is a skeletal adaptation found in which group of animals?
- In Protochordates, the endostyle is a ciliated groove in the pharynx. It is considered homologous to which vertebrate organ?
- Which of the following is a primary characteristic that distinguishes Urochordata (Tunicates) from other protochordates?