Question

Find the incorrect match.

• A. Necturus - Exhibit neoteny
• B. Ambystoma - Exhibit paedogenesis
• C. Alytes - Male shows parental care
• D. Bufo - Lack parotid gland

Answer 1

The correct option is D Bufo - Lack parotid gland

1. Waterdogs ( genus Necturus) exhibit mandatory neoteny , that is they lose their ability to metamorphose.
   
2. Axolotl (Ambystoma mexicana) show conditional neotony or paedogenisis, that is, they metamorphose when administered with thyroid hormone.
   
3. Midwife toads (Alytes) are a genus of frogs, and characteristic of these toad-like frogs is their parental care, the males carry a string of fertilised eggs on their back, hence the name "midwife".
   
4. The parotoid gland is an external skin gland on the back, neck, and shoulder of toads and some frogs. It can secrete a number of milky alkaloid substances (depending on the species) known collectively as bufotoxins, which act as neurotoxins to deter predation. These cutaneous glands are called parotoid as they are somewhat similarly positioned to mammalian parotid gland.
   

So, the correct option is 'Bufo - Lack parotid gland'