The first cellular form of life could have originated

  • A

    $2000$ million years back

  • B

    $11000$ million years back

  • C

    $1500$ million years back

  • D

    $500$ million years back

Similar Questions

Did aquatic life forms get fossilised ? If, yes where do we come across such fossils ?

The cenozoic era is known as

Match the following columns.

Column- $I$

Column- $II$

$A.$ $500$ million years ago

$1.$ Sea weeds and few plants

$B.$ $350$ million years ago

$2.$ Jawless fishes

$C.$ $320$ million years ago.

$3.$ Inverbebrates

Which phenomena confined the pouched mammals of Australia survived because of lack of competition from any other mammals?

Describe the evolutionary history of plant and vertebrates through geological period.