| Description |
viii, 151 pages : color illustrations ; 25 cm. |
| Series |
The green world |
|
Green world (Philadelphia, Pa.)
|
| Bibliography |
Includes bibliographical references (pages 142-143) and index. |
| Contents |
CHAPTER 1: BEGINNINGS What is a seed? Seeds come in a range of sizes Germination Dormant seeds have special conditions Summing Up CHAPTER 2: EARLY SEEDLING DEVELOPMENT From radicle to root Primary roots grow down Shoots grow up! Meristems Summing up CHAPTER 3: HORMONES: CELLS TALKING TO CELLS Hormones are chemical messengers The discovery of plant hormones began with the work of Charles Darwin Auxin stimulates cell growth by changing the properties of the cell wall Auxin has a role in other developmental responses Cytokinins Cytokinins signal the cell when to divide Gibberellins regulate stem elongation, seed germination, and floral development Abscisic acid Ethylene Summing up CHAPTER 4: LIGHT AND PLANT DEVELOPMENT Light and seed germination Light as a source of information Phytochrome: A light-activated switch Some other phytochrome responses What is phytochrome and how does it work? Phototropism is a response to blue light Summing up Chapter 5: PHOTOPERIODISM AND BIOLOGICAL CLOCKS Telling Time without a watch Giant Tobacco and September Soybeans Short Days, long days, and in between The length of the dark period is measured in the leaves The elusive flowering hormone The internal clock On the trail of the endogenous clock Summing Up CHAPTER 6: TEMPERATURE AND DEVELOPMENT Temperature and the natural environment Low temperature can modify flowering behavior The dormancy of buds is sensitive to low temperature Topping up the antifreeze to survive wintry blasts Thermoperiodism and Thermonasty Surviving high temperatures Summing up CHAPTER 7: FLOWERS AND FRUITS Flowers are more than just a pretty face All flowers follow a common plan From leaves to flowers Pollen and eggs Pollination and fertilization Summing up Postscript: From flowers to fruit |
| Subject |
Plants -- Development -- Juvenile literature.
|
|
Growth (Plants) -- Juvenile literature.
|
| ISBN |
0791085627 (acid-free paper) |
|
9780791085622 (acid-free paper) |
|
