Question

name two features which are present in a tadpole but are absent in an adult frog

Answer 1

Baby frogs are known as tadpoles or pollywogs. Unlike adult frogs, they very commonly look like fish and lack limbs. Instead they have long, paddle-like tails that allow them to move and survive in water. As they grow, their physical characteristics change at different stages of their life cycle together with their behavioural patterns and feeding habits [1]. As time passes, their body begins to change into a young adult. The tail used for paddling reduces in size and limbs begin to develop. At first, rear legs will form followed by front limbs. The jaw and skull structure is also distinctly different in tadpoles. In terms of their skull, they have cartilage instead of a hardened bony structure as adult frogs do. They also possess smaller teeth that allow them to chew plants and organic matter during feeding [2]. As tadpoles grow in size, their head structure begins to change, leading to the development of a more defined jaw and the formation of a tongue. In addition, the gills make way for the lungs and the intestines shorten in length in order to adapt to the diet of adult frogs. Tadpoles are also known to have a two chambered heart and a single loop of vessels

Answer 2

the two features are;-
1. Long paddle like tail.
2.looks comman like a fish ( lack of limbs)
; Hence , these are few feature which are absent in an adult frog.