Brown algae: a nkenke nkọwa nke ngalaba

Brown algae na space otu osisi na-ebi isi na mmiri mmiri. Ka ụbọchị, naanị asatọ mara umu, nke na N'ezie evolushọn kwaga freshwater gburugburu.

Department Kelp: ahụ ụlọ

All ndị òtù nke a ngalaba bụ multicellular ahu - colonial na unicellular iche nke ịdị adị na-adịghị na-ekpughe. Ma ihe ndị size, ha nwere ike ịdị nnọọ iche - ka fronds nwere ike ịbụ microscopic, na iru ọtụtụ mita n'ogologo. Mara kwa afọ mmiri osisi, ma e nwere ndị na-ebi ruo 18 afọ.

Ọ bụrụ na anyị na-ekwu banyere ọdịdị na Ọdịdị nke thalli, e nwekwara di iche iche eze. ahịhịa mmiri ahụ nwere ike iso ndị filaments nke efere, akpa, nkụ ma ọ bụ obere bushes. Iji mkpụrụ bụ ofu ma ọ bụ osisi via naanị ma ọ bụ rhizoids usoro.

Integument anọchi anya a cell mgbidi, nke na-emekarị mejupụtara abụọ n'ígwé (atọ n'ígwé na nwere ndị nnọchiteanya). The elu cover oyi akwa mejupụtara nnoo nke pectin bekee na nakwa dere sulfated polysaccharides. The n'ime oyi akwa nwere nnukwu cellulose emep uta eri.

Borax algae: cell Ọdịdị

Otu ihe dị mkpa e ji mara nke Ịhazi mkpụrụ ndụ bụ ọnụnọ nke plastids. Ndị nnọchiteanya nke otu a nke osisi, onye ọ bụla cell nwere a ukwuu nke obere na-mepụtara chloroplasts. Plastids anọ akpụkpọ ahụ. A, elu akpụkpọ ahụ nke chloroplast akpụkpọ ahụ na-aga n'ime endoplasmic reticulum ma ọ bụ ntọala. Ma chlorophyll, ebe a na ọ na-dị iche iche A, C1 na C2.

Ke adianade do, plastids nke algae nwere fucoxanthin, violaxanthin, zeaxanthin na beta-carotene, nke bụkwa ihe dị mkpa e ji mara maka Plant taxonomy.

The cell ntọala bụ naanị otu onye, ọ bụ ezie na e nwere ụfọdụ multi-umu. The isi ngwaahịa bụ mapụtara hrizolaminarin na-edebe pụrụ iche vacuoles ma ọ bụ dị ka cytoplasmic nsogbu dị iche iche.

Kelp na amụba

Anọchitekwa anya nke a ngalaba nwere ike propagated vegetatively, mmekọahụ na asexually. Na ọtụtụ umu, cloning a rụrụ site nkerisi thallus. Ma, ihe atụ, ficus na ọbụ nke ahụ e nwere otu ìgwè nke pụrụ iche na mkpụrụ ndụ na ike ghọọ a ọhụrụ thawed mgbe ọ dị mkpa.

Ma ihe ndị asexual usoro, ọtụtụ mgbe ọ na-rụrụ site n'aka zoospores. Nanị ole na ole na umu mụta nwa site ofu mono ma ọ bụ tetraspor. Site n'ụzọ, zoospores na gametes - naanị ụdị ịdị adị flagellates kelp.

Ma ihe ndị mmekọahụ usoro, ọ pụrụ ịbụ:

• Isogamous (spam na àkwá bụ otu size).
• Heterogamic (nwoke na nwaanyị gametes nwere dị iche iche gametes).
• Oogamnym (nwoke gametes bụ obere na mobile, mgbe ndị inyom oogonia ịnọgide anyịnya na dị iche iche nnukwu size).

Around 80s nke narị afọ nke 20 a chọpụtara ụfọdụ ọgwụ secreted site ahụ mgbe mmekọahụ algae development. Nke a bụ ihe ọ bụla dị ka pheromones, ifịk ifịk mmụta nke dịruru ta.

Kelp na kasị mma-mara nnọchiteanya

Otu n'ime ihe ndị kasị mma-mara umu-ewere sugar kelp, ma ọ bụ ahịhịa mmiri. The osisi nwere a nnukwu dissected thawed, ogologo nke nwere ike ịbụ site 1 14 mita. The thallus na-ewuli elu a nnukwu ego nke laminarin. Ke adianade do, ahịhịa mmiri a na-ewere a iyi bara uru nke ayodiin. Ná mba ụfọdụ, a na osisi na-emezu ma na-eji na salads na ndị ọzọ na efere. Of Tal kwa ka ọgwụ ọjọọ na-eji na ọgwụgwọ nke thyroid ọrịa.

The genus Sargassum bụkwa a maara, n'ihi na ọ bụ n'ihi na persistent, ogologo thalli ndị a mmiri osisi Sargasso Sea n'oge ndị kwa ize ndụ maka igwu.