B. Fill in the blanks.
1. The first form of life on the earth appeared in the_______
belonging to flora world.
class 7 Cbse ch- Life on the earth
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oldest so far discovered is the 130- million-year-old aquatic plant Montsechia vidalii unearthed in Spain in 2015. However it is thought that flowering plants first appeared much earlier than this, sometime between 250 and 140 million years ago
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The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. The signals consisted of a type of carbon molecule that is produced by living things.
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