The effect of extinction of ferns on humans and environment. Introduction: Pteridophytes are the vascular plants. They bear leaves (which are known as fronds), roots and sometimes the true stems. The tree ferns have the full trunks. For example, ferns, horsetails, and club-mosses. The Pteridophytes have ferns and fern allies.

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Chapter 21, Problem 5DQ

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The effect of extinction of ferns on humans and environment.

Introduction:

Pteridophytes are the vascular plants. They bear leaves (which are known as fronds), roots and sometimes the true stems. The tree ferns have the full trunks. For example, ferns, horsetails, and club-mosses. The Pteridophytes have ferns and fern allies.

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