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Jurassic period of the mesozoic era was characterised by

1. Radiation of reptiles and origin of mammal-like reptiles
2. Dinosaurs become extinct and angiosperms appeared
3. Flowering plants and first dinosaurs appeared
4. Gymnosperms were dominant plants and first birds appeared

Correct answer: Gymnosperms were dominant plants and first birds appeared

Solution

The Jurassic period is known for gymnosperm-dominated vegetation, especially conifers and cycads. It also saw the appearance of the first birds, such as Archaeopteryx, making option D correct.

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