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Life Forms - Qualitative Characters
The form and structure of terrestrial communities are determined by the nature of vegetation. Vegetation may be classified according to growth form. The plants may be tall or short, herbaceous or woody, evergreen or deciduous. We might speak of trees, shrubs, and herbs, and then further sub-divide these categories into needle-leaved evergreens, broad-leaved evergreens, broad-leaved deciduous, shrubs, ferns, grasses and so on and so forth.
A more useful system was proposed by a Danish botanist, Christen Raunkiaer in the year 1903. In this system, instead of considering plants' growth form, he classified plants by life form, the relation of their height above ground to their perennating organ. A perennating organ is one that survives from one growth season to the next, remaining inactive over winter or dry periods. Perennating tissue is the embryonic or meristematic tissue of buds, bulbs, tubers, roots and seeds.
Characteristic of Callus The most important characteristic of callus from a functional view point is that abnormal growth has the potential to develop normal roots, shoots and
Shoot Multiplication -Clonal Propagation This is the most important step with respect to the rate of propagation and genetic uniformity of the product. The most reliable and
State two ways in which sulphur dioxide emissions from coal-fired generating stations could be reduced. Sulphur dioxide emissions can be reduced by fitting desulphurization pl
The secondary protein structure is produced by the manner its amino acids interact by intermolecular bond. These interactions make a spatial conformation of the polypeptide filamen
Aerobic and Anaerobic Exercises Generally, there are two types of exercises: - Aerobic - Anaerobic Aerobic exercises are those in which the patient spends calories fro
The structure of leaves Borrow a microscope from another school, a doctor, or a hospital. Study the under- side of leaves and locate the breathing pores or stomata with the two
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Explain Cultivation of microorganisms It is for the production of food colourants has attractions, these must be measured against the financial legislative and user constraint
Matter - Living and Non-Living Our universe is made up of two basic components:, matter and. energy. Matter, as you know, has mass; it occupies space. You can touch matter. It
Categories of Secondary Inductions The secondary inductions are categorized into two types. 1) Instructive Interaction : In such type of an interaction the inducing tissue
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