Question

is the development and growth of a tadpole dependent on any mineral

Answer 1

Tadpoles are the larval stages of frogs and toads. Amphibians differ from most other vertebrates (higher organisms with a backbone), in that their eggs develop into a larval stage, known as a tadpole. The word comes from the old English words for a toad and a head (poll). Pollywog, another name for a tadpole, also comes from the root 'poll' for head and the old word for wriggle, reflecting the fact that their bodies appear to be completely made up of a head and a tail. Whereas frogs and toads are terrestrial, tadpoles are completely aquatic. They have gills instead of eyes. Their food, and therefore their mouths and digestive systems, is often very different from that of their parents. Tadpoles also have tails, which the adults lack. Frogs are in the order anura, meaning no tail, as opposed to tailed amphibians, like salamanders.