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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 9SQ
Textbook Problem
3 views

The spenn of ___ swim to eggs.

  1. a. horsetails
  2. b. eudirots
  3. c. conifers
  4. d. monorors

Summary Introduction

Introduction: Seedless vascular plants have sporophyte-dominant generation, that is, sporophytes are large and long lived. They consisted of two vascular lineages—monilophytes and lycophytes. Monilophytes lineage includes ferns, horsetails, and whisk ferns, and lycophytes lineage includes club mosses and spike mosses. Horsetails include Equisetum species and form spores in a strobilus.

Explanation of Solution

Reason for the correct statement:

Horsetails reproduce by releasing spores and grow in moist environment. After the formation of spores, they germinate and form a gametophyte. As a result, the egg cells and sperm cells are produced. The sperm cells swim through water to reach the egg and thus fertilize it. After fertilization, it forms a zygote that results into a sporophyte.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b...

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