Conecting link between fish and amphibia is

Which is a connecting link between fishes and amphibians

Which is a connecting link between fished and amphibians

Which is a connecting link between fishes and amphibians

Assertion: Lung fishes (e.g Protopterus) act as connecting link between fishes and amphibians. Reason : These have charactes of both fishes and amphibians.

Assertion : Lung fish is connective link between fishes and amphibia. Reason : Lung fishes show characters of both fishes and amphibia.

Assertion : Lung fish is connective link between fishes and amphibia. Reason : Lung fishes show characters of both fishes and amphibia.

........... is a missing link between fish and amphibian.

A unicellular organism often considered conecting link between plants and animals is