Question

Microphylls (a) probably evolved from stem branches that gradually filled in with additional tissues (b) are usually small and have a single vascular strand (c) are characteristics of club mosses (d) both a and $c$ (e) both b and $c$.

Name: Problem 19, Chapter 26: Biology
Uploaded: 2022-01-09T08:40:40-08:00
Duration: 1 min 43 s
Channel: Sirisa Reddy
Description: Microphylls (a) probably evolved from stem branches that gradually filled in with additional tissues (b) are usually small and have a single vascular strand (c) are characteristics of club mosses (d) both a and c (e) both b and c.

   Microphylls (a) probably evolved from stem branches that gradually filled in with additional tissues (b) are usually small and have a single vascular strand (c) are characteristics of club mosses (d) both a and $c$ (e) both b and $c$.

Biology

Eldra Solomon, Linda… 7th Edition

Chapter 26, Problem 19

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Solved by Expert Sirisa Reddy

01/09/2022

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Microphylls are small leaves with a single unbranched vascular strand. They are characteristic of club mosses. Show more…

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Microphylls (a) probably evolved from stem branches that gradually filled in with additional tissues (b) are usually small and have a single vascular strand (c) are characteristics of club mosses (d) both a and $c$ (e) both b and $c$.

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Key Concepts

Leaf Vascular Anatomy

Another important concept is the structural simplicity of microphylls, which typically contain a single vascular strand. This characteristic distinguishes them from more complex leaves that have multiple vascular bundles and contributes to their small size.

Club Mosses

A further key concept involves club mosses, a group of lycophytes known for having microphylls. The presence of these simple, single-veined leaves is a characteristic feature of club mosses and plays a significant role in discussing the evolution and diversity of vascular plant leaf types.

Evolution of Microphylls

One key concept is the proposed evolutionary origin of microphylls. These leaves are thought to have evolved as small outgrowths from stem tissue that gradually became vascularized, a theory explaining their development as modifications of stem branches.

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