Examlex
Perform. Express answers in simplest radical form.
Endosymbiosis
Type of symbiosis in which one organism lives inside another. See endosymbiont.
Gymnosperms
A group of seed-producing plants that includes conifers, cycads, and allies, characterized by seeds that are not enclosed within an ovary.
Dinosaurs
A diverse group of reptiles of the clade Dinosauria that first appeared during the Mesozoic Era, known for their extensive diversity and dominance during the Jurassic and Cretaceous periods.
Paleozoic Era
A geological time period that lasted from about 541 to 252 million years ago, marked by significant evolutionary developments, including the rise of fish, amphibians, and reptiles.