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(B) The evolutionary sequence of life on Earth is as follows:$1$. First heterotrophic prokaryotes $(I)$: These were the earliest life forms that utili

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$I, III, II, IV$

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(B) The evolutionary sequence of life on Earth is as follows:$1$. First heterotrophic prokaryotes $(I)$: These were the earliest life forms that utilized existing organic molecules for energy.$2$. First autotrophic prokaryotes $(III)$: As organic resources became scarce,organisms evolved the ability to synthesize their own food (e.g.,chemosynthesis and later photosynthesis).$3$. First eukaryotes $(II)$: These evolved from prokaryotes through endosymbiosis,characterized by a membrane-bound nucleus and organelles.$4$. First animals $(IV)$: Multicellular eukaryotic organisms appeared much later in the evolutionary timeline.Therefore,the correct chronological order is $I, III, II, IV$.

Given below are some major events in the early history of life:
$I.$ First heterotrophic prokaryotes
$II.$ First eukaryotes
$III.$ First autotrophic prokaryotes
$IV.$ First animals
Choose the correct sequence of these evolutionary events.

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Given below are some major events in the early history of life:$I.$ First heterotrophic prokaryotes$II.$ First eukaryotes$III.$ First autotrophic prokaryotes$IV.$ First animalsChoose the correct sequence of these evolutionary events.