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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

Solutions

Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 22, Problem 7SQ
Textbook Problem
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Club mosses, horsetails, and ferns are ___ plants.

  1. a. multicelled aquatic
  2. b. nonvascular seed
  3. c. seedless vascular
  4. d. seed-bearing vascular

Summary Introduction

Introduction: The first land plants grouped under bryophytes were seedless nonvascular plants followed by seedless vascular plants. Seedless vascular plants have sporophyte dominant generation, that is, sporophytes are large and long lived. They consisted of two vascular lineages—monilophytes and lycophytes.

Explanation of Solution

Reason for the correct statement:

Monilophytes lineage includes ferns, horsetails, and whisk ferns, and lycophytes lineage includes club mosses and spike mosses. They have well-defined internal vein structures and unlike flowering plants, they do not produce seeds or flowers. They disperse by releasing spores that form short-lived and tiny photosynthetic gametophytes.

Hence, option c. is correct.

Reasons for the incorrect statement:

Option a. is given as “multicelled aquatic”. Earlier to plants, green algae were aquatic...

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