A) gymnosperms are dominant plants and first birds appear
B) radiation of reptiles and origin of mammal like reptiles
C) dinosaurs become extinct and angiosperms appear
D) flowering plants and first dinosaurs appear
Correct Answer: A
Solution :
Jurassic period is the second geological period of Mesozoic era. In this period, the gymnosperms were dominant and the plants included ferns, cycads, Ginkgo, rushes and conifers, among animals, important invertebrates included ammonites, corals, brachiopdds, bivalves and echinoids. Reptiles dominated the vertebrates and the first flying reptiles the pterosaurs appeared. The first primitive bird, Archaeopteryx, also made its appearance.
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