Summary:
- Flowering plants are thought to have evolved at least 200 million years ago from gymnosperms like Gnetae.
- The fossil flowers have male and female reproductive organs but no petals or sepals.
- Flowers have bright colors, strong scents, and sweet nectar to attract animal pollinators.
- In exchange for pollination, flowers gave the pollinators nectar.
- Some of the most recent angiosperms to evolve are grasses, such as domestic grasses.
- They have many large, edible seeds that contain a lot of food.