Nyob rau hauv kab laum phab ntsa ntawm ootheca yog zais los ntawm?

Cov txheej txheem:

Nyob rau hauv kab laum phab ntsa ntawm ootheca yog zais los ntawm?
Nyob rau hauv kab laum phab ntsa ntawm ootheca yog zais los ntawm?
Anonim

Nyob rau hauv kab laum, ootheca yog secreted los ntawm ib lub caj pas colleterialuas qhib rau hauv lub vestibulum thiab secretes protein thiab tanning tus neeg sawv cev. Sab nraub qaum thiab sab xub ntiag ntawm kab laum secretes cov txheej txheem protein uas tsim cov khoom siv hauv kev tsim cov ootheca.

Yuav ua li cas zais ootheca hauv poj niam kab laum?

Poj niam kab laum tsim qe, hu ua ootheca. Ootheca muaj 16 lub qe fertilized uas tau ntim los ntawm cov proteinaceous secretion secreted los ntawm lub caj pas colleterial uas maj mam hardens los tsim kom muaj zog, tiv thaiv casing nyob ib ncig ntawm lub qe.

Muaj pes tsawg ootheca tsim?

Ib tug poj niam kab laum nruab nrab tsim tau ib ootheca txhua hli uas muaj nyob ib ncig ntawm 16 qe thiab nws yuav nqa nws rov qab mus txog thaum nws pom qhov chaw nyab xeeb rau nws. Feem ntau cov ootheca muab tso rau ze ntawm qhov chaw ntawm cov zaub mov thiab txuas mus rau ib qho chaw nrog kev pab los ntawm kev zais ntawm kab laum lub qhov ncauj.

Yuav muaj pes tsawg ootheca poj niam kab laum muaj?

Ntawm qhov nruab nrab, poj niam tsim ib ootheca txhua hli rau kaum hli, nteg ib nrab ntawm ib ncig ntawm 16 qe ib kis.

In cockroach, ootheca is produced by secretion of

In cockroach, ootheca is produced by secretion of
In cockroach, ootheca is produced by secretion of
15 cov lus nug ntsig txog pom

Pom zoo:

Nthuav cov khoom
Cov menyuam yaus hnub nyoog li cas?
Nyeem ntxiv

Cov menyuam yaus hnub nyoog li cas?

Cov me nyuam pib dov thaum ntxov li 4 hli. Lawv yuav pob zeb los ntawm ib sab mus rau sab, ib qho kev taw qhia uas yog lub hauv paus rau dov. Lawv kuj tuaj yeem dov los ntawm plab mus rau sab nraub qaum. Thaum 6 lub hlis, cov menyuam mos feem ntau yuav dov mus rau ob qho kev qhia.

Kuv puas tuaj yeem cog txiv lws suav rau hauv lauj kaub?
Nyeem ntxiv

Kuv puas tuaj yeem cog txiv lws suav rau hauv lauj kaub?

Nroj 'Moneymaker' txiv lws suav rau hauv lub txaj zoo uas tau txais rau 6 lossis ntau teev ntawm hnub ci txhua hnub. Cog cov yub tob dua li lawv nyob hauv lawv cov lauj kaub yub, yog li hauv qab txheej ntawm nplooj tsuas yog saum cov av saum npoo.

Puas enthalpy ntawm vaporization tsis zoo?
Nyeem ntxiv

Puas enthalpy ntawm vaporization tsis zoo?

Lub enthalpy ntawm condensation (los yog cua sov ntawm condensation) yog los ntawm txhais tau tias sib npaug zos rau enthalpy ntawm vaporization nrog rau qhov opposite sign: enthalpy hloov ntawm vaporization yeej ib txwm zoo (kub yog absorbed los ntawm cov khoom), whereas enthalpy hloov pauv ntawm condensation ib txwm tsis zoo (kub tawm los ntawm cov khoom) … Puas yog entropy ntawm vaporization zoo lossis tsis zoo?