Laau'aʻaʻa a he manawa pōkole hōʻikeʻano

Plant nā'aʻaʻa i loa like. Interestingly, ka morphological ano o kēlā me kēia 'ole hilinaʻi nui' ana ma luna o kona executable hana. Ua hoʻoholo ihola e līkaia no kekahi o ko lākou mau hoailona ia mea:

• ka hoʻonaʻauao;
• ka penaʻana;
• mechanical;
• lawelawe;
• walaʻauʻana.

Kēlā me kēia 'ole i kekahi mau hiʻona, a e e kūkā mai ma lalo nei.

Hoʻonaʻauao kanu'aʻaʻa

Hoʻonaʻauao'aʻaʻa i kapaia meristems. Kēia 'ole ninoieo o liʻiliʻi, polyhedral keena me ka lahilahi pā pōhaku. Ka mea, i hoopili paa i kahi hookahi. Ma lalo o ka microscope oe ke ike i ka mea, i ka nui nucleus, a he nui no ka poe liilii, vacuoles. A kūikawā hiʻona o keia lole o ka hiki ana o kona keena, e mahele i noke aku. He mea e hōʻoiaʻiʻo he ikaika ka ulu ana o ka mea kanu. Ua hoʻoholo ihola e līkaia no ka keia mau hoailona ia mea:

• Helu meristem - ka makua kanu i kēia lole ua waiho i loko o nā manaʻo kōkua o ka hua hou ana iho a me ka aa kōkua. Ua ua lawe mai i ke aloha i kona iniiaiie kanu ka ulu ana ma ka lōʻihi.
• Secondary meristem - cambium hooku iho la ia a me ka fellogenom. Mau fabrics hoolako haumāna ka hoʻonuiʻana o ke kumu a me ka aa anawaena. By wahi kaʻawale apical, kīloi paʻewa, a kiʻekiʻe intercalary meristem.

Ka penaʻana kanu'aʻaʻa

Ka uhi lole ua kau ma luna o ke kino luna o ka mea kanu. Kona papa kuhikuhi hana - o ka hoomalu ana. Oia hale i kuleana no ka ia'ku o ka mea kanu i ka ma paʻi stress, hoomalu nae lakou i ku e kokololio ka mahana loli a me excessive omoāea o ka ona mau, mālama aku i ka ingress o pathogens. Ke uhi lālā hiki ke maheleia i loko o ka papa kuhikuhiE pūʻulu ekolu:

• Epidermis (ili) - o ka iniiaiie'aʻaʻa e ninoieo a uuku, aniani moakaka, a me ka paa i pani ma waena o aeee. E like me ka rula, i kēia 'ano o ka lole uhi i ka ili o ka lau a me ka poe hou hoi e pana aku. Ke epidermal ahu iho la ka lau nā stomata - ho okumu i nā kuleana no na keʻano o ka hanaʻana o ke kinoea launa a me ka transpiration.
• Periderm - ka haumāna ka penaʻana lole, a ua kau ma luna o ke kumu a me ke kumu 'ilikai. Ua ninoieo o feloggena a me ka Cork. Cork mea he make ke kelepona hele, ahu iho, i nā pā pōhaku o i i impregnated me ke kūpono waiwai suberin.
• Cork -'aʻaʻa, i mea ano o ka laau a me kekahi mau lāʻau liʻiliʻi. Kēia, ahu iho o ka uhi ana'aʻaʻa o ka mawaho hapa o ke pani.

E mālama nei i nā'aʻaʻa o nā mea kanu

Ke iniiaiie hana o keia pae ana o nā'aʻaʻa - amo ana o ka wai a me nā minelala hao i ka kino o ka mea kanu. E maopopo ma waena o nā kēia mauʻano o ka lawelawe oihana mua:

• Xylem - kolo ana i ka wai me ka mea hoʻoheheʻe nā minelala hao, mai ke kumu a hiki i ka honua wahi o ka mea kanu. Ua ninoieo o ka kūikawā moku, i kapaʻia ka trachea a me tracheids.
• Phloem - i ka lole, a hoakaka i ka luna-iaʻikena. Ma kānana paipu a pau ke aloha ka mahuaola, a i synthesized e na lau i hohola i nā nā loko o ka mea kanu, a me ke kumu kahua.

I ka papa kuhikuhiE lole o nā mea kanu: parenchyma

Kēia lole Ua haku o ka liilii, aeee e ola ana me ka lahilahi pā pōhaku. I ka mea, o ke kumu o ka a pau na nā loko. It nā:

• Kaʻaluna'aʻaʻa - ka mea, aia no iloko olaila na keena a me chloroplasts i kuleana no na keʻano o ka hanaʻana o ka kāʻamaʻai a me ke kahua o ke aloha 'ona. Ka hapa nui o kēia mau nā'aʻaʻa na i loko o ka lau.
• Waho pūnaewele nā'aʻaʻa - keena i waihoia ka mahuaola. Kēia'aʻaʻa ua kia ma ka hua, na aa a me ka anoano.
• Wai-hua ana i'aʻaʻa - e hoʻohana no ka hoʻomāhuahua a me ka mālama 'ana o ka wai. Mau'aʻaʻa ano o nā mea kanu e noho ana ma ka wela, a maloʻo aniau i loko nō, e like me cactus.
• Pneumatic lole - ka fabrics i nui intercellular cavities i i piha me ka lewa. Aerenchyma ano o Marsh a me ka wai mea kanu.

Mechanical kanu'aʻaʻa

Kuleana no ka hoʻokumu o ka kapiliia ikaika. Ka mea, kākoʻo i ke kino o ka mea kanu, e ia oi hoʻopale i ka me mechanical keiki. Ua ninoieo o ka lole me ka manoanoa tehasa keena. Ka loaʻelemakule me mechanical'aʻaʻa hoʻomohala i loko o ke kumu o ka mea kanu.