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Q. Describe Ecological phytosociological?
Field studies are desirable for an understanding of the relationship of any group of plants. If it is not possible to study the plants in the field you should grow these plants in one or more test gardens. Seeds and plants for this purpose could be obtained from indigenous source. While making an ecological study in the field record the season of flowering and of fruiting and collect material in all stages of development. Make a note of precise locations of collections, habitat types and of soil characteristics. Make a detailed study of characters often lost in the dried specimens like colouration of foliage and floral parts, smell, presence or absence of latex, corolla ve rnation, corolla colour and anther colour before and after dehiscence. Also, make a note of viscidity of parts especially nectariferous organs. Look for pollinating agencies and record the time of pollination. Texture of foliage and perianth parts is of great importance and also colour of freshly matured fruits. You should remember that root stock characters often provide immense information and should not be overlooked. While making a phytosociological study, determine the natural variation within and between populations. Assign a different collection number to specimens from different colonies within the same general area. If the material is growing in abundance prepare four or five sets of duplicate collections and on completion of the study you can distribute it to important herbaria. You will learn more about herbaria in next section. Mass collection will also provide a means of determining relationships with greater accuracy and whether a variation is one associated with or restricted to colonies, to habitats or to regions. From this information you can determine that a population represents a sub species, variety or forma. Collect those parts that are significant for their characters and also random samples. Collect about 50 samples of a population after proper selection and this will constitute the material for study and permanent herbarium record compiling information on frequency of variation, discontinuity of variation and correlation between variables.
Describe the Biological parameters of living organisms Biological parameters which include living organisms constitute an important component of soil. Even though organisms fo
Mineralisation and Humification As a result of physical weathering, the rocks are broken down into smaller particles. But this is not the true soil, and plants cannot grow well
BRONCHUS - In thorax trachea is devided in to 2 bronchi that enter into lungs of its own side. Rings present in it. BRONCHIOLES - These are branches of bronchus.
The enzyme in the TCA cycle that catalyzes a substrate level phosphorylation is -citrate dehydrogenase -succinate thiokinase -isocitrate dehydrogenase
Structure of human spermatozoon: Nature: Human sperms are minute, microscopic and motile. Structure: Each sperm have an oval shaped head piece, a neck, a middle piece and
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Maturation Phase The Maturation phase characterizes he transformation of diploid primary spermatocytes into haploid spermatids. The primary spermatocyte divides meiotically t
using examples of invertebrate phyla illustrate how the increase in complexity is reflected by their nervous system?
Cellulose is a polysaccharide which is composed of the unbranched chains of glucose; the major structural carbohydrate of the plants, insoluble in water, and indigestible in the h
Describe Class Aves in details? Class Aves: The fossil record contains evidence that birds evolved from the reptiles. Birds share anatomical features with Protoavis and Archa
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