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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4,261 Students Helped

Homework Questions

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Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

This section covers key concepts related to plant nutrition and transport, including phytoremediation, soil properties, uptake of water and mineral nutrients, and the internal transport mechanisms within plants. It explains how the Casparian strip and membrane transporters in roots control nutrient uptake, describes the structure and function of xylem and phloem, and details theories such as cohesion–tension for water movement and pressure flow for sugar translocation. Understanding these processes is essential to grasp how plants maintain their growth and respond to environmental challenges.

Learning Objectives

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Key Concepts

CONCEPT

DEFINITION

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Example Problems

Example 1

The main source(s) of hydrogen and oxygen for plants is (are) a. soil and air b. water and soil c. water and fertilizer d. water and air

Example 2

Decomposing organic matter in soil is called ___ a. clay b. humus c. topsoil d. silt e. sand f. leaching

Example 3

Most water moves from soil to vascular cylinder ____ a. through root hairs b. between root cells c. through root cell walls d. in xylem

Example 4

The conducting tubes in a vascular cylinder are_______ a. endodermis b. pericycle c. root cortex d. xylem only e. xylem and phloem f. companion cells

Example 5

A $\quad$ strip between abutting endodermal cell walls forces water and solutes to move through these cells rather than around them. a. cutin b. Casparian c. cohesion d. cellulose

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Step-by-Step Explanations

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Common Mistakes

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