Choose the correct answers from the alternatives given .
Which of the following pairs of occurrence and date is not correct?

Origin of multicellular organisms- 650 million years ago

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Origin of eukaryotic cells- 1.5 billion years ago

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Origin of prokaryotic cells- 1.5 billion years ago

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All of the above are incorrect

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Solution

The correct option is B Origin of eukaryotic cells- 1.5 billion years ago
The prokaryotic cells lack the nucleus and were the first and simplest life forms and were originated 3.8 billion years ago. But the eukaryotic cells originated 1.5 billion years ago were complex than prokaryotes as they contained the nucleus and the most complex forms called multicellular organisms originated about 600 million years ago. So, the correct option is "origin of eukaryotic cells 1.5 billion years ago".

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Match the events leading to the origin of life listed under column I with the time frame given under column II; choose the right answer which gives the correct combination of the alphabets of the two columns:

$\begin{matrix} C o l u m n I & C o l u m n I I E v e n t s & T i m e F r a m e A & O r i g i n o f u n i v e r s e & p & 3 b i l l i o n y e a r s a g o B & O r i g i n o f e a r t h & q & 4.6 b i l l i o n y e a r s a g o C & O r i g i n o f s t a r s & r & 10 b i l l i o n y e a r s a g o D & O r i g i n o f l i f e & s & 14 b i l l i o n y e a r s a g o t & 5 b i l l i o n y e a r s a g o \end{matrix}$