How do amphibian eggs differ from reptile eggs?

Amphibian eggs are characterized by having a soft, gel-like substance surrounding them. This gelatinous coating provides some protection to the developing embryos and helps to keep them moist. Unlike reptile eggs, which have hard or leathery shells that offer a more rigid structure and protect the developing offspring from desiccation and predators, amphibian eggs are more vulnerable to drying out and need to be kept in moist environments or water.

The soft gel surrounding amphibian eggs also allows for oxygen exchange and movement of waste products, which is essential for the developing larva. This adaptability is crucial, especially since many amphibians lay their eggs in aquatic environments where the gel can also help with buoyancy and prevent eggs from sinking too deep into the substrate.

The other options highlight characteristics more typical of reptile eggs or incorrect generalizations about amphibian reproduction. For instance, while amphibians often lay their eggs in water, they do not exclusively require a water environment for all species. Similarly, the notion that amphibian eggs require no moisture for survival is inaccurate, as they rely heavily on moist conditions to ensure successful development.