Do you like climbing trees? Or looking at flowers? Or eating fruit? If so, you like plants! Scientists who study plants are called botanists. Botanists have discovered and named 350,000 different kinds of plants— and they find new ones every year! They classify their discoveries, that is, sort them into groups. Some living things are hard to sort, so botanists disagree on their classifications. Algae may be placed in the kingdom of plants or in the kingdoms of protists or monera. Fungi may be called a separate kingdom or may be called plants. Plant groups that most botanists agree on are mosses and liverworts; ferns, club mosses, and horsetails; and seed-bearing plants.

Algae and fungi

Mosses and liverworts

Ferns, club mosses and horsetails

Seed-bearing plants