The growth and the spreading of seaweed really depended on oceanographic factors (physics, chemistry and the movement or the dynamics of sea) as well as his kind of the basic substrate.
For his growth, seaweed took nutrition from around it in a manner diffusion went through the wall thallus him.
Like generally to other kind algae, Glacilaria morphology of kind seaweed was mentioned thallus (ordinary: thalli), that is not having the real difference between the root, the stick and his leaves.
His proliferation was carried out with 2 methods that is in a manner was married between the male gamete and the female gamete (generative) as well as was not married through vegetatif, konjugatif and the spreading of spores that were gotten to the pocket of spores (carporspora, cystocarp).
Was based on the content of his pigment, seaweed was grouped to 4 classes (othmer, 1986; Anomin, 1977) that is: Rhodophyceae (the red gap), Phaeophyceae (the chocolate gap), Chlorophyceae (the green algae), Cyanophyceae (the blue gap green).
Several grass kinds that had been worth economics since long ago have been traded in that is Eucheuma sp., Hynea sp., Gracillaria sp., and Gelidium sp., from the Rhodophyceae class as well as Sargassum sp., from the Phaeophyceae class.
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