Kab laug sab txawv ntawm kab li cas: cov yam ntxwv nta
Xwm yog tag nrho ntawm txhua yam ntawm amazing neeg sawv cev. Arthropod hom boasts tus lej loj tshaj plaws, ob tus neeg sawv cev tseem ceeb tshaj plaws yog kab thiab arachnids. Lawv zoo sib xws heev, tab sis kuj txawv heev.
Txheem
Arthropods: lawv yog leej twg
Arthropods.
Lub npe hais rau nws tus kheej. Arthropods yog ib tug series ntawm invertebrates nrog articulated appendages thiab ib tug segmented lub cev. Lub cev muaj ob ntu thiab ib qho exoskeleton.
Ntawm lawv muaj ob hom:
- arachnids ntawm cov nroj tsuag, uas suav nrog kab laug sab, scorpions thiab zuam;
- kab, ntawm uas muaj ntau - npauj npaim, midges, yoov, kab, ntsaum, thiab lwm yam.
Leej twg yog kab
cov neeg sawv cev ntawm kab.
Kab yog cov me me invertebrates, feem ntau nrog tis. Qhov ntau thiab tsawg sib txawv, los ntawm ob peb hli mus rau 7 ntiv tes. Lub exoskeleton yog tsim los ntawm chitin, thiab lub cev muaj lub taub hau, hauv siab thiab lub plab.
Qee tus neeg muaj tis, kav hlau txais xov, thiab lub cev tsis pom kev. Lub neej voj voog ntawm kab yog kev hloov pauv tiav, los ntawm cov qe mus rau cov neeg laus.
Arachnids
Cov neeg sawv cev ntawm arachnids tsis muaj tis, thiab lub cev tau muab faib ua ob ntu - lub plab thiab cephalothorax. Lub qhov muag yog qhov yooj yim thiab lub neej voj voog pib nrog lub qe, tab sis tsis muaj metamorphosis tshwm sim.
Zoo sib xws thiab sib txawv ntawm kab thiab arachnids
Ob tsev neeg no muaj ntau yam zoo sib xws. Ob tsev neeg:
- arthropods;
- invertebrates;
- segmented lub cev;
- feem ntau yog terrestrial;
- arterial ob txhais ceg;
- muaj qhov muag thiab kav hlau txais xov;
- qhib circulatory system;
- digestive system;
- ntshav txias;
- dioecious.
Qhov sib txawv ntawm kab thiab arachnids
| Txhais | Kab | Arachnids |
| Appendages | Peb nkawm niam txiv | plaub khub niam txiv |
| Tis | Rau feem ntau | Tsis |
| Ncauj | Lub puab tsaig | chelicerae |
| Lub cev | Lub taub hau, hauv siab thiab plab | Lub taub hau, plab |
| Antennas | Ib khub | Tsis |
| Qhov muag | Nyuaj | Nplej, 2-8 pieces |
| Ua pa | Trachea | Trachea thiab ntsws |
| Ntshav | Tsis muaj xim | Xiav |
Lub luag hauj lwm ntawm cov tsiaj
Ob leeg thiab cov neeg sawv cev ntawm cov tsiaj ntiaj teb no muaj lub luag haujlwm hauv qhov xwm txheej. Lawv coj lawv qhov chaw hauv cov khoom noj khoom haus thiab muaj feem cuam tshuam ncaj qha rau tib neeg.
Yog, kab kab yog domesticated los ntawm txiv neej thiab nws cov neeg pab.
Arachnids yog ubiquitous thiab txhua tus muaj nws lub luag haujlwm. Lawv tuaj yeem pab tau rau tib neeg los yog ua rau muaj kev puas tsuaj ntau.
xaus
Feem ntau kab laug sab hu ua kab thiab cov neeg sawv cev ntawm cov tsiaj ntiaj teb no tsis meej pem. Txawm li cas los xij, ntxiv rau hom dav dav, Arthropods, lawv muaj ntau qhov sib txawv ntawm cov qauv sab hauv thiab sab nraud.
Yav dhau los