Question

Jurassic period of the Mesozoic era is characterised by
A. radiation of reptiles and origin of mammal-like reptiles
B. dinosaurs become extinct and angiosperms apper
C. flowering plants and first dinosaurs appear
D. gymnosperms are dominant plant and first birds appear

Answer 1

Correct Answer - D
Jurassic period is the second geological period of Mesozoic era. In this period, the gymnosperms were dominant and the plants included ferns, cycads, Ginkgo, bushes and conifers. Among animals, important invertebrates included ammonites, corals, brachiopods, bivalves and echinoids. Reptiles dominated the vertebrates and the first flying reptiles the pterosaurs appeared. .
The first primitive bird, Archaeopteryx, also made its appearance