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Soil-Environmental Components
The word soil is derived from Latin word 'solum' meaning earthy material in which plants grow. The soil is the consolidated outer layer of the earth's crust ranging in thickness from a mere film to three metres or more. It provides mechanical anchorage to plants, besides being a reservoir of water and plant nutrients. The soil also supports a rich and highly diversified micro-flora and fauna.
Typically, soil is a complex mixture of inorganic and organic materials. The inorganic materials, that is, the mineral constituents of soil are derived from parent material (the soil forming rocks) by fragmentation and weathering. The pore spaces formed between the mineral particles of soil are filled with water and gases. The organic components of soil comprise organic wastes, dead remains of plants and animals, and their decomposition products. Besides, a large variety of algae, bacteria, fungi and many small and large animals are invariably present in a fertile soil.
a) A recombinant DNA is formed when sticky ends of vector DNA and foreign DNA join. b) Define how the sticky ends are formed and get joined.
Draw a diagram of transverse section of mammalian bone and label the following parts in it: (i) Haversian canal (ii) Lacuna containing osteocytes (iii) Canaliculi
how the gall bladder develops in a trnsplanted liver tissue ?
How is oil droplet different from micelles? Also describe the chemical make-up of each.
How bone implant interface can be evaluated 1) Evaluation of the bone - implant interface can be done by following: i) Implant mobility and discomfort a) Clinical implan
Syngamy - Patterns of Sexual Reproduction Sperm fuses with the egg. This results in both the union of the paternal nucleus with the maternal one (karyogamy), as well as the fu
Vasoactive substances such as Endothelium Derived Relaxing Factors (EDRF). Prostacyclin and Endothelin can be formed in the vascular endothelium. Endothelial dysfunction can lead t
Proteins of Animal Origin - Fish Fish: The edible portion is skeletal muscles of the body. Even though the skeletal muscles of different animals are basically similar, fish spe
Q. Defense mechanisms used in Diabetes Mellitus? Defense mechanisms are the strategies to cope with the real situation and to maintain self-image. Healthy persons normally use
What is photoperiodism? Photoperiodism is the biological response shown by some living beings to their daily time of light exposure (photoperiod).
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