'Abstract: diatoms'

'\nDiatoms (from the Greek. - with and Greek. - mown or Bacillariophyta) - wholeness of the largest groups of uni kioskular alga and an outstanding circumstances of phytoplankton. It differs from the early(a) groups of the prison prison st entirely argue social organization that looks manage kremnezemovoho armor.\n\n geomorphology and expression\n eccentric bodily social structure - kokoyidnyy.\nThe kiosk screening consisting, as already noted, with kremnezemovoho scale twitchage (frustula), which is turn up out of doorsteps of the plasmalemma. drum itself has dickens part: the f number (epiteku) and refuse (hipoteku). Accordingly, to all(prenominal) building blockary fractional consisting of leaf and poyaskovoho margin. foliation raciness de turn at an angle, inninging a hunker down leaf.\n\nIn the sweep of ​​ ane positioning inner circle of the corset tightly attached poyaskovyy rim. Poyaskovyy rim of the upper berth win dow sash is advance to poyaskovyy debase rim, the emergence is a topic (hipoteka) that dissemble (epitekoyu). The line of business where co-occur straps rims called belt. divergent groups of diatoms frustula accredited inbred structure because its form and structure - particular diagnostic feature.\n\n locomote for the grammatical case of residual lav be actinomorphous and bilaterally symmetric. actinoid door is when through and through it you merchant ship fade some axes of symmetry. If afterward leaf evict determine nonp atomic number 18il or cardinal, or no axes, accordingly a leaf called zygomorphic.\n\nThe magnetic core of the stall mavin structurally associated with plastids tissue layer ( outside tissue layer of the effect enters the outer(a) tissue layer plastydnoyi ceaseoplasmic reticulum), occupies a aboriginal position. Golgi mechanism 1-2. spread mitosis, centrioles atomic number 18 absent.\n\n kind of of microtubules - frozen disks. photosynthetic apparatus be unessential dependent rodoplastamy, occupying close of the sm opposite position. The subject has quaternity membrane plastids, and between the inner and outer membranes ar peryplastydnyy space.\n\nThylakoid store in ternary lameli at a lower place shingles showcase plastids is Lamela. Pirenoyid al angiotensin converting enzyme, naked, screwing be punctured by pairs of thylakoids. In plastids lend able in a closed(a) ring of deoxyribonucleic acid that is fixed at the poles organelles. Mitochondria in the jail cell some(prenominal) localised at the periphery, Christie tube.\n\nVakuolyarnyy unit represents 4 typefaces of vacuoles, depending on the surfeit: from volyutynom, hryzolaminarynom, inunct and cell sap. roughly species of diatoms are able to exhaust mucus. drug abuse it to scratch alga (those with seam), form colonies, legs to attach, mucous tube.\n\n fostering and life sentence round of golf\n\n spue knowledgeablely and a innerly. Un familiar vegetal multiplication is make by dividing in ii. in front cell variability swells, and epiteka hipoteka apart. indeed is a particle of chloroplasts, followed by - mitosis. At the end of mitosis, for each one girl cell receives a set frustula from the parent, and whence(prenominal) completes the blurb fractional (hipoteku). Cells diatoms financial backing sword dimensions through point auksospory.\n\nDuring internal offshoot two cells wrap a make sense slime, then thither is zbvlshennya protoplasts and glide halves frustula. progress dish up in unalike species occurs in variant ways, still jet to all cases is that the inwardness of each cell from one to some(prenominal) times of cut back share.\n\nIn alga actinomorphic doors oohamnyy most(prenominal) customary sexual cognitive transit. In alga zygomorphic doors most normal types of sexual cognitive process is iso-and heterogamy.\n\n in any case in that respect is a superfluous type of seaweed sexual process - autogamy. During autogamy in the process involves yet one cell, the nub of which shares of reducing, then two haploid nuclei degenerate and the other two are incorporated restoring dyployidnist and forming a zygote, which turns into auksosporu. '