Class Cyclostomata Invictus: Animal Kingdom Animal Kingdom Biology - XI NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Identify the incorrect statement regarding cyclostomes:

1.	Lampreys have direct development, but Hagfishes go through a larval stage followed by metamorphosis into a juvenile form.
2.	Unlike jawed vertebrates, which have three semicircular canals in each inner ear, lampreys have only two and hagfishes just one.
3.	The hagfish blood is isotonic with seawater, while lampreys appear to use the same gill-based mechanisms of osmoregulation as marine teleosts.
4.	Both hagfishes and lampreys have a single gonad.

Subtopic: General Introduction: Vertebrates & Agnatha | Class Cyclostomata |

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