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Question

Choose the correct answers from the alternatives given .
Which of the following is mismatched

A
Cenozoic-grasses and humans.
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B
Cambrian-marine organisms with external skeletons
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C
Palaeozoic-prokaryotes and unicellular eukaryotes
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D
Mesozoic-cycads arid dinosaurs
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Solution

The correct option is C Palaeozoic-prokaryotes and unicellular eukaryotes
The beginning of the Paleozoic era is marked by a sudden explosion of invertebrate animals, over 900 recorded species in the Cambrian period. It was only a few million years later that vertebrates appeared during the Ordovician period. The Devonian period showed an uprising in fish and other marine life.
So, the correct option is 'Palaeozoic-prokaryotes and unicellular eukaryotes'.

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