The right answer is angiosperms
One of the major turning points in this plant history is undoubtedly the appearance of angiosperms (flowering plants) towards the early Cretaceous. The first dinosaurs lived in a plant universe that is noticeably different from the one we know today because it is dominated by ferns, cycads, conifers and plants that are now extinct.
Angiosperms are the flowering plants that evolve during the cretaceous period.
Further Explanation:
The Cretaceous period starts with the termination of the Mesozoic era. A cretaceous period follows the extinction of the dinosaur's world. The extinction of a considerable number of dinosaurs species is the characteristic of the cretaceous period. The climatic condition of that period was warm and the global sea level was very high. A large population of marine organisms habitats in a warm and shallow sea. Angiosperms are the vascular flowering plants that evolve during the cretaceous period. The seeds of the flowering plants are enclosed within the ovary (fruit). Angiosperms are found both on terrestrial and aquatic habitats. The terrestrial vegetation zone is predominantly occupied by flowering plants. Angiosperms are the flowering plants that bloom for the first time during the cretaceous period and develop flowers to attract pollinating agents. The insects that facilitate the pollination have coevolved with the flowering plants. The climatic conditions of this period are favorable for the development of flowering plants.
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Answer Details:
Grade: Senior Secondary
Subject: Biology
Chapter: Evolution
Keywords:
Angiosperms, flowering plants, Mesozoic era, vegetation, pollination, climate, habitats, Cretaceous period, dinosaurs, insects.
