A living connecting link which provides evidence for organic evolution is ___________.
A living connecting link which provides evidence for organic evolution is ___________.
The correct option is A Duck bill platypus between reptiles and mammals
Duck-billed platypus is an egg-laying mammal and are endemic (native) to eastern Australia. They have mammary glands, hair, and diaphragm just like mammals. They produce amniotic eggs just like in reptiles. Hence it is considered as a living connecting link between reptiles and mammals. So option a is correct.
Figure : Duck-billed platypus
Sphenodon is a living fossil which forms the connecting link between amphibians and reptiles. They have a very primitive heart and brain structure similar to that of the amphibians. Their general body shape is similar to that of the reptiles.
Figure : Sphenodon
Archaeopteryx is considered a transitional fossil between reptiles and modern birds. They had feathers on their body just like aves and their bones were not pneumatic. They had teeth and a weak sternum just like in reptiles.
Figure : Archaeopteryx
Lungfish (Protopterus) is a connecting link between fishes and amphibians. It has the characteristics of both amphibians and reptiles. They have primitive lungs just like in amphibians. They had smooth, elongated, and cylindrical bodies with scales like in reptiles.
Figure : Lungfish
Duck-billed platypus is an egg-laying mammal and are endemic (native) to eastern Australia. They have mammary glands, hair, and diaphragm just like mammals. They produce amniotic eggs just like in reptiles. Hence it is considered as a living connecting link between reptiles and mammals. So option a is correct.
Figure : Duck-billed platypus
Sphenodon is a living fossil which forms the connecting link between amphibians and reptiles. They have a very primitive heart and brain structure similar to that of the amphibians. Their general body shape is similar to that of the reptiles.
Figure : Sphenodon
Archaeopteryx is considered a transitional fossil between reptiles and modern birds. They had feathers on their body just like aves and their bones were not pneumatic. They had teeth and a weak sternum just like in reptiles.
Figure : Archaeopteryx
Lungfish (Protopterus) is a connecting link between fishes and amphibians. It has the characteristics of both amphibians and reptiles. They have primitive lungs just like in amphibians. They had smooth, elongated, and cylindrical bodies with scales like in reptiles.
Figure : Lungfish
