Book cover for Biology : The Unity and Diversity of Life

Biology : The Unity and Diversity of Life

Cecie Starr, Christine A. Evers; Lisa Starr

ISBN #9781337408332

15th Edition

734 Questions

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Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

This section explores the evolution and diversity of plants, outlining how plants evolved from simple green algal ancestors to complex land plants with specialized structures such as vascular tissues and seeds. Important reproductive adaptations like alternation of generations, double fertilization, and the emergence of seed banks have allowed plants to thrive in various environments, ensuring genetic diversity and resilience. The diverse groups—from bryophytes to angiosperms—not only define ecological systems but also provide significant economic and cultural benefits to humans.

Learning Objectives

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Key Concepts

CONCEPT

DEFINITION

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Example Problems

Example 1

The first land plants were ____. a. gnetophytes b. gymnosperms c. bryophytes d. Iycophytes

Example 2

Lignin supports the stems of ____. a. conserve water b. take up carbon dioxide c. reproduce d. stand upright

Example 3

A waxy cuticle helps land plants ____. a. conserve water b. take up carbon dioxide c. reproduce d. stand upright

Example 4

True or false? Ferns produce seeds inside sori.

Example 5

_____ attach mosses to soil. a. Rhizoids b. Rhizomes c. Roots d. Strobili

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Step-by-Step Explanations

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Common Mistakes

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