the Cage of a green plant. Common features of a structure of a vegetative cage

you are: the Cage of a green plant

Like all other eukarioticheskim to cages, cages of the higher plants contain the kernel surrounded with a cover, endoplazmatichesky retikulum, diktiosomy and mitohondrii. Ribosomes meet in them as in a free kind - in cytoplasm, and attached to endoplazmaticheskomu retikulumu; except that, ribosomes are found out in some cellular organellah. Replikatsija of DNA, DNA-dependent synthesis RNK and RNK-DEPENDENT synthesis of fiber proceed in vegetative cages the same as and in other cages. Many vegetative fibers possess kataliticheskoj activity, i.e. Are enzymes; other fibers act as the important structural components of a cage.

More low we will list the features peculiar only to vegetative cages.

1. Numerous hloroplast a vegetative cage carry out transformation of radiant energy in chemical that does a cage avtotrofnoj.

2. The cellular wall by which each protolayer is surrounded, serves as a plant skeleton; the protolayer is concluded in it as in somebody a rigid case, and it does possible sharp local increase in tourist's mountain pressure.

3. Central vakuol on which share it is necessary about 90% of volume of a cage, is not simply the tank for a metabolism waste; its contents concluded in a membrane - a solution of various substances - facilitate to a cage absorption of water at the expense of osmotic forces. This water is absorbed by a plant without an energy expense - diffusion of molecules of water causes their receipt in vakuol.

4. Plazmodesmy - narrow channels on which small molecules can diffundirovat from a cage in a cage, without crossing cellular membranes, - provide practically in all plant a protoplasm continuity.

Different cages differ both on a thickness plazmodesm, and on their number, and these distinctions play, probably, important role in chemical bond regulation between cages of a vegetative organism.