BRYOPHYTES (Mosses) Výukový materiál OR 03 - 82 Tvůrce: Mgr. Alena Výborná Tvůrce anglické verze: ThMgr. Ing. Jiří Foller Projekt: S anglickým jazykem.

Prezentace na téma: "BRYOPHYTES (Mosses) Výukový materiál OR 03 - 82 Tvůrce: Mgr. Alena Výborná Tvůrce anglické verze: ThMgr. Ing. Jiří Foller Projekt: S anglickým jazykem."— Transkript prezentace:

1 BRYOPHYTES (Mosses) Výukový materiál OR 03 - 82 Tvůrce: Mgr. Alena Výborná Tvůrce anglické verze: ThMgr. Ing. Jiří Foller Projekt: S anglickým jazykem do dalších předmětů Registrační číslo: CZ.1.07/1.1.36/03.0005 Tento projekt je spolufinancován ESF a SR ČR

2 BRYOPHYTES  the oldest land plants  they have been preserved to the present day  the oldest resembled today's liverworts  they do not have a conductive tissue  they do not grow up to great heights  absence of conducting and supporting tissues  they are divided on mosses and liverworts

3 BRYOPHYTES – structure of a moss plant  small stalk  leaf  attaching threads (attached to a substrate, it leads partially nutrients and water)  after fertilization, bristle with a capsule is developing  the capsule is closed with a lid - spores

4 BRYOPHYTES – structure of a moss plant

5 BRYOPHYTES - liverworts LAMELLAR flat bowed grown firmly to the substrate FOLIATE two rows of sessile leaves disposed on the stem in one plane

6 BRYOPHYTES - liverworts

7 BRYOPHYTES – life cycle

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9  spore germinates in moist environment  from the spore is created richly branched protonema  from the protonema of moss plant  there are on it:  gametangia (egg cells)  female antheridia  humidity is important for fertilization  from the fertilized egg cell grows bristle and capsule

10 BRYOPHYTES – occurrence  all over the Earth  part of communities of higher plants  they predominate in the northern areas  they colonize places inhospitable for higher plants

11 BRYOPHYTES – importance  they quickly colonize the newly exposed soil  it prevents soil erosion  they are involved in the formation of humus  they keep water  they contribute to the maintenance of the landscape and higher humidity in the meadows and the woods  indicator of air pollution

12 REVISION :  1) What is the importance of bryophytes?  2) Describe the picture.  3) Where the mosses occur?  4) Describe the metagenesis of bryophytes.  5) Liverwort include……..

13 Source of texts and pictures :  DOBRORUKA, Luděk J. Přírodopis pro 7. ročník základní školy. 1. vyd. Praha: Scientia, 1998, 152 s. ISBN 80-718-3134-4