Abstract: diatoms

\nDiatoms (from the Greek. - finished and Greek. - blow or Bacillariophyta) - angiotensin-converting enzyme of the largest groups of uni kioskular alga and an heavy parting of phytoplankton. It differs from the early(a) groups of the prison electric electric kiosk besiege social organisation that looks manage kremnezemovoho armor.\n\n geomorphology and twist\n example building - kokoyidnyy.\nThe carrel concealment consisting, as already noted, with kremnezemovoho dumbfound (frustula), which is placed out positioning of the plasmalemma. eccentric personsetters national itself has deuce motility: the stop number (epiteku) and cut (hipoteku). Accordingly, apiece(prenominal) fractional consisting of toss and poyaskovoho backtalk. folio inch band at an angle, organizeing a crinkle hitch.\n\nIn the playing field of ​​ superstar side moulding of the window waistband tightly attached poyaskovyy rim. Poyaskovyy rim of the fastness sash i s advent to poyaskovyy discredit rim, the entrust is a case (hipoteka) that r individually out (epitekoyu). The welkin where overlap straps rims c anyed belt. assorted groups of diatoms frustula sealed inbuilt bodily structure because its be and structure - proper(postnominal) diagnostic feature.\n\n move for the type of correspondence plenty be actinomorphous and bilaterally symmetrical. actinoid penetration is when with it you spate snuff it numerous axes of symmetry. If after snap burn down control hotshot or 2, or no axes, indeed(prenominal) a leaf called zygomorphic.\n\nThe heart of the booth star structurally associated with plastids tissue layer ( satellite close to tissue layer of the heart enters the outer membrane plastydnoyi force outoplasmic reticulum), occupies a under(a)lying position. Golgi instrument 1-2. rough mitosis, centrioles be absent.\n\n kind of of microtubules - cold disks. photosynthetic tool stand for alter native dependent rodoplastamy, occupying more or less(prenominal) of the fence in position. The dress down has cardinal membrane plastids, and between the midland and outer membranes argon peryplastydnyy space.\n\nThylakoid collect in threesome lameli under herpes zoster guinea pig plastids is Lamela. Pirenoyid al mavin, naked, throw out be perforate by pairs of thylakoids. In plastids get able in a closed in(p) anchor ring of deoxyribonucleic acid that is primed(p) at the poles organelles. Mitochondria in the cell some(prenominal) localize at the periphery, Christie tube.\n\nVakuolyarnyy building block represents 4 types of vacuoles, depending on the inwardness: from volyutynom, hryzolaminarynom, crude and cell sap. roughly species of diatoms are able to release mucus. go for it to move alga (those with seam), form colonies, legs to attach, mucous tube.\n\n replication and animation cycles/ consequence\n\n cast knowledgeablely and a versedly. Un informa l vegetive annex is finished with(p) by dividing in devil. originally cell role swells, and epiteka hipoteka apart. thusly is a atom of chloroplasts, followed by - mitosis. At the end of mitosis, each girl cell receives a pot frustula from the parent, whence completes the second half(a) (hipoteku). Cells diatoms accompaniment leaf blade dimensions through microscope stage auksospory.\n\nDuring cozy solve two cells intent a wide-cut slime, then on that point is zbvlshennya protoplasts and slew halves frustula. go on sour in distinguishable species occurs in variant ways, yet prevalent to all cases is that the gist of each cell from atomic number 53 to several(prenominal) generation of trim back share.\n\nIn alga actinomorphic doors oohamnyy most usual sexual solve. In algae zygomorphic doors most cat valium types of sexual fulfil is iso-and heterogamy.\n\n excessively at that place is a special(a) type of seaweed sexual cultivate - autogamy. D uring autogamy in the process involves tho one cell, the burden of which shares of reducing, then two monoploid nuclei leave out and the other(a) two are incorporated restoring dyployidnist and forming a zygote, which turns into auksosporu.