Seedless Plants  Mosses and Liverworts  Ferns and Horsetails.

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Presentation transcript:

Seedless Plants  Mosses and Liverworts  Ferns and Horsetails

Mosses and Liverworts Small Live on bark, rocks, and soil No vascular system Must live in places that are wet No true roots, stems, or leaves

Mosses

Reproduction in mosses

Liverworts

Mosses and Liverworts Live together in large groups Covering soil or rocks in a mat of tiny green plants Each moss has rhizoids (root-like structures) Rhizoids help anchor the plant

Importance of Mosses and Liverworts: Usually the first plants to inhabit a new environment. Form a thin layer of soil when they die. They help hold the soil in place which prevents erosion. Nesting material for birds. Peat moss can be burned as fuel.

Ferns and Horsetails Grow tall Have vascular systems

Ferns

Can grow almost anywhere. Have an underground stem called a rhizome. Leaves are called fronds.

Fern Reproduction

Fern Frond Top of frond Underside of frond with sporangia

Horsetails

Small vascular plants. Grow less than 1.3 meters tall. Grow in wet, marshy places. Pioneers used them to scrub pots and pans.

Importance of Seedless Vascular Plants Help form soil when they die. Also hold soil in place to prevent erosion. Ferns serve as house plants. Some are cooked and eaten. Formed coal.