One
class embraces the functions relating to the life of the individual organism.
These functions have to do with the processes of eating, digesting,
assimilating, taking in of oxygen, producing of energy, and excreting of waste
matters. These may be called the nutritive functions, if the term is used in its
broadest sense. To the second group of activities belong the functions that have
to do with the perpetuation of the animal or plant species, and these are known
as the reproductive functions. Living organisms, whether plant, animal, or
human, may, in the third place, be considered in their relations to one another
and especially to the general welfare of mankind. Thus we may discuss the
beneficial or injurious effects, so far as man is concerned, of different kinds
of insects or of various types of bacteria; we may learn of the activities of
individual men or of groups of individuals which promote or retard the advance
of human society; or we might, if we were to carry the study still farther, even
seek to learn the ways by which the higher thoughts of mankind, as expressed in
poetry, music, and religion, affect the development of the human race.
Author(s): James Edward Peabody and Arthur Ellsworth Hunt
This PDF covers the following
topics related to Plant Biology : Cell Basics, Plant Cell Structures,
Dicotyledon Stem Structure, Cell Types and Plant Tissues, Secondary Growth in a
Dicotyledon Stem, Monocotyledon Stem Structure, Dicotyledon Root Structure,
Monocotyledon Root Structure, Growth of the Shoot and Root, Dicotyledon Leaf
Structure, Monocotyledon Leaf Structure, Plant Cell Glossary.
This
book explains the following topics: The Propagation Environment, Biology of
Plants, Development of Seeds, Seed Selection, Seed Production and Handling,
Principles of Propagation from Seeds, Techniques of Propagation by Seeds and
Cuttings, Principles of Grafting and Budding, Techniques of Grafting,
Propagation by Specialized Stems and Roots, Principles and Practices of Clonal
Selection, Principles of Tissue Culture and Micropropagation, Techniques for
Micropropagation and Grafting.
Author(s): Dr. Mark C. Starret, The University of Vermont
This book explains the following topics:The Circumnutating Movements Of
Seedling Plants, General Considerations On The Movements And Growth Of Seedling
Plants, Sensitiveness Of The Apex Of The Radicle To Contact And To Other
Irritants, The Circumnutating Movements Of The Several Parts Of Mature Plants,
Modified Circumnutation: Climbing Plants, Epinastic And Hyponastic Movements,
Sleep Or Nyctitropic Movements, Their Use: Sleep Of Cotyledons, Nyctitropic Or
Sleep Movements Of Leaves, Movements Excited By Light, Sensitiveness Of Plants
To Light: Its Transmitted Effects, Localised Sensitiveness To Gravitation, And
Its Transmitted Effects.
Objective of this book is to provide light micrographs of the types
of cells and tissues that students typically examine in a plant anatomy course.
All micrographs are accompanied by figure legends to help the viewer interpret
and understand the structures presented. Each chapter in this web site consists
of numerous pages, each with a micrograph and an explanatory text.