Question

Do Chondrichthyes lay eggs?

Answer 1

Chondrichthyes:

1. These are mostly marine fish.
2. They have a pair of jaws. Their jaws are very powerful.
3. The mouth is present in the abdomen.
4. They have a cartilaginous endoskeleton, which is supported by stores of calcium salts.
5. The notochord is present throughout life.
6. Males and females are separate and have internal fertilization.
7. Skates and some sharks are oviparous, most sharks are ovoviviparous and some are viviparous.
8. Adult males hold a clasp on their pelvic fins. These are used to transfer sperm to a female's cloaca.
9. Members of the Chondrichthyes class do deposit eggs.
10. Big skate (Beringraja binoculata) and zebra shark are two examples (Stegostoma fasciatum).

Final Answer: Yes, Chondrichthyes lay eggs.