«biotexnologiya» kafedrasi
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MIKOLOGIYA VA ALGOLOGIYA
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- Reproduction
- Schizogony
- Fermentation
Asexual reproduction - reproduction, in which one parent individual gives rise to two or more new individuals, identical in inherited traits of parental individuals. There are actually asexual and vegetative propagation. Asexual reproduction - in contrast to the vegetative reproduction - the formation of specialized cells - spores that during germination give rise to a new organism. This reproduction comes from a single cell (tsitogoniya). Typically during sporulation occurs meiosis.
Reproduction - play their own kind, ensuring the continuity and succession of life with its specific characteristics and general physico-chemical unity. There are asexual and sexual reproduction. Some groups living there is an alternation of sexual and asexual reproduction. Each type and its population characterized by a certain intensity of reproduction, varying depending on the conditions of existence. Schizogony - from the simplest - asexual reproduction by dividing the body into a large number of child individuals. Lichens - a group of primitive organisms, is an association of fungi with algae. Lichens form (gray-green) leaf, cortical or bushy growths on plants, rocks and soil. Protozoa - unicellular eukaryotes, consisting of a single cell or a colony. Simply combined into one systematic type, occupying a borderline situation between animals and plants. Simple stand out in particular the nature of the kingdom. It simply refers sarkodovyh, flagellates, Sporozoa, ciliates and kindosporidii. Fermentation - the process of converting carbohydrates as a result of vital activity of fungi, bacteria and other lower organisms. Yeast - single-celled organisms of various shapes that are: belonging to the class of marsupials mushrooms; are roundish or elongated calf; do not lose viability when dry; capable under favorable conditions (in fruit juice) quickly multiply by budding, spores or division. For yeast food are protein (nitrogenous) substances and minerals (in small amounts) sweeteners. Prokaryotes - ancient organisms. Prokaryotes do not possess well-decorated core and sheath typical chromosomal apparatus. The hereditary information is passed and implemented through DNA. Prokaryotes reproduce by dividing without the express sexual process. For prokaryotes include viruses, bacteria, cyanobacteria, mycoplasmas and other. Taxis - directional movement (lower) organisms, individual cells and their organelles influenced by unilateral action of the stimulus. Distinguish: positive taxis, aimed at the exposure source; and negative taxis directed to the source of the impact. Phycology - (Latin Alga -. Alga, logia -uchenie) science that studies the algae. Benthos - set of organisms, life, or most of it live at the bottom of reservoirs. There are Bakteriobentos, phytobenthos and zoobenthos. In size distinguish organisms macrobenthos (5 - 10 mm and larger), meiobenthos (from 0. 5 to 5 - 10 mm) and microbenthos (less than 0. 5 mm). Biomass - the mass of the population of organisms on a certain area or a certain amount of water in the zone or the entire body of water; at any time, it is a result of some of oppositely directed breeding processes, and growth on the one hand, and elimination - from the other. Download 0.86 Mb. Do'stlaringiz bilan baham: |
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