Question

Identify the animal in the following diagram. How can this be an evidence regarding evolution ?

Answer 1

Organic evolution is defined as the unfolding of the process of different types of organism formation.

1) Centipede

$\to$ The fossils record of centipedes extends back $430$ million years ago.

$\to$ They belong to Myriapoda.

$\to$ The most synapomorphic character is the modification of the first pair of legs into venomous forceps.

2) Platypus

$\to$ Platypus belongs to mammals. They split off from other mammals before evolution

$\to$ Number of related species appear in the fossil second.

3) Salamander

$\to$ The gill slits and notochord appear in the embryonic development of all vertebrates, from fishes to mammals.

$\to$ The notochord is replaced by the vertebral column in all vertebrates.