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Correct order of the appearance of animal life on Earth a. Early prokaryotic cells, oxygen in...

Correct order of the appearance of animal life on Earth

a. Early prokaryotic cells, oxygen in atmosphere, muticell, eukaryotic cells, many fishes, land invasion, early reptiles, protists, dinosaur extinct, early mammals

b. Early prokaryotic cells, oxygen in atmosphere, eukaryotic cells, protists, multicell, many fishes, land invasion, early reptiles, early mammals, dinosaur extinct

c. Oxygen in atmosphere, eukaryotic cells, early prokaryotic cells, multicell, protists, land invasion, many fishes, early mammals, early reptiles, dinosaur extinct

d. Oxygen in atmosphere, early prokaryotic cells, muticell, eukaryotic cells, many fishes, land invasion, early reptiles, protists, dinosaur extinct, early mammals

e. Early prokaryotic cells, oxygen in atmosphere, multicell, eukaryotic cells, many fishes, land invasion, early reptiles, protists, dinosaur extinct, early mammals

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Answer #1

Answere : The correct option is "option (b)" i.e. "Early prokaryotic cells, oxygen in atmosphere, eukaryotic cells, protists, multicell, many fishes, land invasion, early reptiles, early mammals, dinosaur extinct".

Explanation : Life on earth started from chemosynthetic prokaryotes and then oxygen came into earth atmosphere. It gave rise to some aerobic prokaryotes. Unicellular eukaryotes came up into existence. Protist are unicellular eukaryotes. Fishes, amphibian, reptiles, mammals are multicellular eukaryotes.

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