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SCHITA LECTIEI
MUSCHIUL DE PĂMÂNT
Mediul de viată : pe sol , scoarta copacilor, stânci umede, marginea izvoarelor, etc.
Alcătuirea corpului :
-rizoizi - perisori cafenii - rolul unei rădăcini-absorb apa
- tulpinita-verde, subtire, dreaptă, neramificată
- frunzulite- verzi, dese, ascutite la vârf, fără petiol si nervuri,
-nu au vase conducătoare
Hrănirea: autotrofă
Inmultirea: a. asexuat – prin spori
b. sexuat – prin celula-ou
Ciclul de viată
Spor protonemă muschi cu organe bărbătesti celula –ou sporogon spor
muschi cu organe femeiesti
generatia sexuată generatia asexuată
Alti muschi: fierea – pământului ,muschiul de turbă
Importanta muschilor
Formarea solului, evitarea eroziunii
 Apără plantele de uscăciune si de frig bulbii si rizomii unor plante
 Păsările îsi căptusesc cuibul cu muschi; hrană pentru animale ;aranjamente florale
 Combustibil cărbunelui de turbă
 Fac trecerea spre plantele superioare,au evoluat din algele verzi.

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Schita lectiei muschi

  • 1. SCHITA LECTIEI MUSCHIUL DE PĂMÂNT Mediul de viată : pe sol , scoarta copacilor, stânci umede, marginea izvoarelor, etc. Alcătuirea corpului : -rizoizi - perisori cafenii - rolul unei rădăcini-absorb apa - tulpinita-verde, subtire, dreaptă, neramificată - frunzulite- verzi, dese, ascutite la vârf, fără petiol si nervuri, -nu au vase conducătoare Hrănirea: autotrofă Inmultirea: a. asexuat – prin spori b. sexuat – prin celula-ou Ciclul de viată Spor protonemă muschi cu organe bărbătesti celula –ou sporogon spor muschi cu organe femeiesti generatia sexuată generatia asexuată Alti muschi: fierea – pământului ,muschiul de turbă Importanta muschilor Formarea solului, evitarea eroziunii  Apără plantele de uscăciune si de frig bulbii si rizomii unor plante  Păsările îsi căptusesc cuibul cu muschi; hrană pentru animale ;aranjamente florale
  • 2.  Combustibil cărbunelui de turbă  Fac trecerea spre plantele superioare,au evoluat din algele verzi.