Question

A living connecting link that provides evidence of organic evolution is
A. Sphenodon between reptiles and birds
B. Archaeopteryx between amphibians and birds
C. Lungfishes between Pisces and reptiles
D. Duck-billed platypus between reptiles and mammals

Answer 1

Evolution is meant to be the basics of our life. The new generations being the smarter one evolve from parents due to the privileges provided to them. The species which can adjust to the conditions prevailing can also survive.

Step by step answer: The evolution states the connection of the present organisms to the ancient ones. The connecting link of a particular organism is having the intermediate characters of two groups
-Option A: Sphenodon between reptiles and birds: They were the connecting link between amphibians and reptiles.
-Option B: Archaeopteryx between amphibians and birds: It is a link between birds and dinosaurs. They were huge dinosaurs that could fly.
-Option C: Lung fishes between Pisces and reptiles: They are the members of bony fishes groups. They have no link to the reptiles group. They were the link between fishes and amphibians.
-Option D: Duck-billed platypus between reptiles and mammals: Platypus is believed to have derived from the warm-blooded animals. They are sea animals which give eggs. They are the mammals giving eggs, which forms an exception to the mammal group. They have venom like reptiles, especially snakes. They hide from predators and have a bill like a duck face.
So, the answer is option D: Duck-billed platypus between reptiles and mammals

Note: Erasmus Darwin is known to have contributed to the field of phylogenetics as he proposed The Laws of organic life. He was the grandfather of Charles Darwin - The father of Phylogenetic studies. Ernst Haeckel is one of the other phylogenetic scientists, was born on 16 February 1834 and died at the age of 85. He was famous for his ontogeny studies. He was awarded the Linnean Medal.