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Evolution — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYEvolution1 Mark
MCQ
In cambrian time, the dominant arthropods were:
  • A
    Trilobites
  • B
    Cockroach
  • C
    Millipede
  • D
    Sacculina
✓

Answer

  1. Trilobites

Explanation:

Trilobites were the dominant species during the Cambrian Period, 540 to 490 million years ago. They are a fossil group of extinct marine arthropods that form the class Trilobita.

They finally disappeared in the mass extinction at the end of the Permian about 250 million years ago. 

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