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#Question id: 5021


Most dinosaurs and pterosaurs become extinct at the close of the __________ era.

#11. Evolution and Behavior
  1. Cretaceous

  2. Permian

  3. Devonian

  4. Ordovician


Answer:- Option(s): 1


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#Question id: 12516

#6. System Physiology – Plant

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#Question id: 12520

#6. System Physiology – Plant

During the biosynthesis of precursor All-trans-β-carotene is isomerized to 9-cis-β-carotene by ____A_____While 9-cis-β-Carotene is cleaved by carotenoid cleavage_____B_______ to produce_____C______.

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