Cov tsiaj yooj yim xws li worms thiab kab tsis raug mob ntawm tib neeg lub siab, tab sis lawv siv cov txheej txheem nociceptive receptors kom txav deb ntawm qhov muaj feem cuam tshuam. Neurobiologist Marco Gallio, Ph. D., thiab nws pab neeg tau tshaj tawm tias Planarian Planarian Eggs tsim nyob rau hauv lub cev thiab raug tso rau hauv capsules. Lub lim tiam tom qab, cov qe tau tsim thiab loj hlob mus rau cov neeg laus. Nyob rau hauv asexual reproduction, tus planarian detaches nws tus Tsov tus tw kawg thiab txhua ib nrab regrows qhov poob qhov chaw los ntawm kev tsim dua tshiab, tso cai rau endoblasts (cov neeg laus qia hlwb) faib thiab sib txawv, yog li ua rau ob kab cab. https://en.wikipedia.org › wiki › Planarian
Planarian - Wikipedia
Yuav ua li cas yog tias koj txiav ib tug flatworm nyob rau hauv ib nrab?
Planarians yog cov kab mob flatworms uas muaj peev xwm rov tsim dua lawv tus kheej. Yog hais tias koj txiav ib tug planarian nyob rau hauv nruab nrab, txhua ib nrab yuav hloov kho nws cov uas ploj lawm, thiab koj yuav muaj ob tug planarians nyob rau hauv ib lub lis piam.
Pob Planaria puas muaj kev xav?
Qee cov neeg npaj txav los ntawm kev ntaus cilia (protuberances ntawm epithelial hlwb), uas tso cai rau lawv mus glide. Lwm tus txav los ntawm kev cog lus cov leeg thiab undulating lawv lub cev. Thaum txiav, planarians tsis hnov mob, tsuas yog siab.
Planarians puas hnov mob?
Pab pawg tshawb fawb Gallio pom tias cov neeg npaj muaj lawv tus kheej qhov txawv ntawm ib tus neeg muaj npe nrov uas twb muaj lawm, qhov kev hloov pauv hloov pauv muaj peev xwm ankyrin 1 (TRPA1). TRPA1 yog qhov zoo tshaj plaws lub npe hu ua "wasabi receptor" nyob rau hauv tib neeg thiab raws li ib tug sensor rau ib puag ncig irritants muab nce mus rau qhov hnov mob thiab khaus.
Pob pos muaj hlwb?
Flatworms lub cev yog ob sab sib luag thiab lawv muaj lub taub hau thiab tus Tsov tus tw. Lawv muaj lub hauv nruab nrab lub paj hlwb uas muaj lub hlwbthiab cov hlab ntsha. Pawg ntawm lub teeb-sensitive hlwb ntawm ob sab ntawm lawv lub taub hau ua li cas hu ua eyepots. … Flatworms yog txiv neej thiab poj niam, hu ua hermaphroditic.
