EBK LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 8220103935432
Author: Sadava
Publisher: MAC HIGHER
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Chapter 27, Problem 3Q
Summary Introduction
To review:
The expectation of finding plants closely related to the last common ancestor of ferns along with seed plants in a geological stratum where the fossils of rhyniophytes are found.
Given:
Figure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants.
Figure 1: The geological timescale of the origin of various embryophytes.
Introduction:
Rhyniophytes are the earliest known vascular plants, which lacked true leaves and roots. These plants possessed rhizoids and rhizomes so as to compensate the functions of leaves and roots. They are known only in the fossil form. Rhyniophytes, club mosses, spike mosses, quillworts, and relative species are sometimes called as lycophytes.
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