UT Arlington BIOL BIOL 3427 - Exam 2 Study Guide (18 pages)

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Exam 2 Study Guide



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Exam 2 Study Guide

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This study guide outlines Chapters 24, 25, 25, 11, 12 and chapter 7 which includes The root, the shoot, secondary growth and stems, Respiration, photosynthesis, and evolution/systematics.


Pages:
18
Type:
Study Guide
School:
University of Texas at Arlington
Course:
Biol Biol 3427 - Plant Science
Edition:
1

Unformatted text preview:

BIOL 3427 Exam 2 Study Guide Lectures 8 14 Lecture 8 September 16th to September 25th What are the primary functions of a root The root functions in anchorage absorption storage conduction and synthesis of some hormones and secondary metabolites The root anchors the plant to the soil so that it does not fall over The root absorbs water and dissolved minerals from the soil Some roots are fleshy and are specialized for storage What is the first root that originates from the ground The first root that originates from the ground is called the primary root What is the root system dependent on The root system is dependent on soil moisture soil composition and soil temperature These factors can affect how many roots are there and how far they go What is the function of feeder roots Feeder roots located on the upper portions of the soil are responsible for more water nutrient uptake with nutrients concentrated in the region of the soil How does the shoot and root system balance between the root to shoot ratio There is a balancing area for photosynthesis with area for absorbing water and minerals They must have enough water and nutrients The root to shoot system decreases with age and depends on habitat and plant morphology There is a dynamic flow of how many roots are constantly dieing and reforming What is the structure and function of a root cap The root cap is made up of parenchyma cells living thin walled cells that protects root apical meristem and aids in root penetration in the soil It responds to gravity gravitropism and processes and directs movement through the soil The peripheral cells on the root cap slough off as the root grows and produce mucilage for lubrication Mucigel is a hydrated polysaccharide that helps with movement through the soil What are characteristics of the apical meristem The apical meristem is small with many sided cells initials and derivatives It has active division in early root development Describe the different steps of early root



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