Campbell Biology Plus Masteringbiology
Campbell Biology Plus Masteringbiology
10th Edition
ISBN: 9780321775849
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 38, Problem 13TYU

a)

Summary Introduction

To explain: The concept of pollen grain.

Introduction: Pollen grains are the tiny bodies in a seed plant that appears usually as a fine dust. Each pollen grain has a very minute body that varies in shape and structure and is formed in the anther (male apparatus) of seed-bearing plants. Pollens are transported by various means such as wind, insects, water,and so forth to the pistil (female structure) of the flower, wherefertilization takes place.

b)

Summary Introduction

To explain: The development of pollen grain.

Introduction: Pollen grains are the tiny bodies in a seed plant that appears usually as a fine dust. Each pollen grain has a very minute body that varies in shape and structure and is formed in the anther (male apparatus) of seed-bearing plants. Pollens are transported by various means such as wind, insects, water,and so forth to the pistil (female structure) of the flower, wherefertilization takes place.

c)

Summary Introduction

To explain: The function of pollen grain.

Introduction: Pollen grains are the tiny bodies in a seed plant that appears usually as a fine dust. Each pollen grain has a very minute body that varies in shape and structure and is formed in the anther (male apparatus) of seed-bearing plants. Pollens are transported by various means such as wind, insects, water,and so forth to the pistil (female structure) of the flower, wherefertilization takes place.

d)

Summary Introduction

To explain: How pollen was an important step toward seed plant to become dominant plants.

Introduction: Pollen grains are the tiny bodies in a seed plant that appears usually as a fine dust. Each pollen grain has a very minute body that varies in shape and structure and is formed in the anther (male apparatus) of seed-bearing plants. Pollens are transported by various means such as wind, insects, water,and so forth to the pistil (female structure) of the flower, wherefertilization takes place.

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