Prior knowledge provides a foundation for new learning experiences. You have been living around and with these types of plants all of your life. Many of these plants can be found around your home or in your home. All animals depend on these plants for food and oxygen. We will see in our study of the different plant types, how they have evolved from very simple plants into the most complex types we have on earth.
Plants are different from animals because they can make their own food.
The process is called photosynthesis and involves the plant's chlorophyll and sunlight. Plants are also different in that most are sessile, they do not move about like animals. There are two main groups of plants, non-vascular and vascular. Non-vascular plants lack true roots, stems and leaves. They must depend on osmosis and diffusion to move materials in and out of their structures.