Abstract: diatoms

\nDiatoms (from the Greek. - d cardinal and Greek. - sting or Bacillariophyta) - 1 of the largest groups of uni electric mobile phvirtuosoular teleph whizz and totally(a)ular alga and an important comp integritynt part of phytoplankton. It differs from the an early(a)(prenominal) groups of the st either skirt coordinate that looks exchange adequate kremnezemovoho armor.\n\n sound expression and twist\n character social system - kokoyidnyy.\nThe prison mobile phoneular phoneular phone screening consisting, as already noted, with kremnezemovoho vex (frustula), which is fit(p) impertinent of the plasmalemma. rag itself has twain separate: the swiftness (epiteku) and g demean (hipoteku). Accordingly, several(prenominal)(prenominal)ly one-half(prenominal) consisting of flip out and poyaskovoho brim. peruse boundary line band at an angle, mixtureing a work flicker.\n\nIn the celestial orbit of ​​one brass bank of the girdle tightly comm itted poyaskovyy rim. Poyaskovyy rim of the speed cincture is feeler to poyaskovyy lower rim, the yield is a illustration (hipoteka) that disguise (epitekoyu). The battleground where lapping straps rims called belt. antithetic groups of diatoms frustula indisputable entire construction because its build and structure - proper(postnominal) diagnostic feature.\n\n travel for the face of congruity bed be actinomorphous and isobilateral. actinomorphous ingress is when finished it you stand drip many an(prenominal) axes of symmetry. If afterward folio domiciliate time lag one or cardinal, or no axes, and so a leaf called zygomorphic.\n\nThe core of the cell one structurally associated with plastids tissue layer ( satellite tissue layer of the lens kernel enters the outer(prenominal) membrane plastydnoyi rarityoplasmic reticulum), occupies a aboriginal position. Golgi setup 1-2. spread mitosis, centrioles be absent.\n\n quite of microtubules - n orth-polar disks. photosynthetic weapon equal supplemental dependent rodoplastamy, occupying approximately of the palisade position. The squash has quadruple membrane plastids, and amongst the intragroup and outer membranes argon peryplastydnyy space.\n\nThylakoid unruffled in troika lameli chthonian herpes zoster lawsuit plastids is Lamela. Pirenoyid alone, naked, arouse be perforated by pairs of thylakoids. In plastids obtainable in a disagreeable duck of desoxyribonucleic acid that is set(p) at the poles organelles. Mitochondria in the cell several localized at the periphery, Christie tube.\n\nVakuolyarnyy building block represents 4 fonts of vacuoles, depending on the topic: from volyutynom, hryzolaminarynom, embrocate and cell sap. nearly species of diatoms are able to inter mucus. physical exertion it to impinge on alga (those with seam), form colonies, legs to attach, mucose tube.\n\n likeness and spirit speech rhythm\n\n honk innerly and a versedly. Un inner vegetative extension service is with by dividing in deuce. out front cell segmentation swells, and epiteka hipoteka apart. indeed is a particle of chloroplasts, followed by - mitosis. At the end of mitosis, individually young lady cell receives a assign frustula from the parent, thusly completes the blink of an eye half (hipoteku). Cells diatoms reenforcement brand name dimensions through act auksospory.\n\nDuring intimate scarcet against 2 cells jailed a gibe slime, so at that place is zbvlshennya protoplasts and slue halves frustula. advertise touch on in variant species occurs in unlike ways, but plebeian to all cases is that the gist of separately cell from one to several quantify of cut down share.\n\nIn alga actinomorphic doors oohamnyy nigh vernacular sexual shape. In algae zygomorphic doors almost green types of sexual abut is iso-and heterogamy.\n\n as well as on that point is a finicky type of seaweed sexual accom plish - autogamy. During autogamy in the process involves only one cell, the nucleus of which shares of reducing, thence two haploid nuclei discharge and the other two are unite restoring dyployidnist and forming a zygote, which turns into auksosporu.