VEGETATIVE ORGANS Výukový materiál OR 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/ Tento projekt je spolufinancován ESF a SR ČR
VEGETATIVE ORGANS
VEGETATIVE ORGANS - root it tightens the plant in the ground it receives water and nutrients storage function tack function aerial roots roots of parasitic plants (mistletoe)
VEGETATIVE ORGANS - root storage function: ▫ storage of various substances ▫ root thickens ▫ carrot ▫ horseradish ▫ tubers
VEGETATIVE ORGANS - root tack function: ▫ clingy roots ▫ attaching by creeping plants ▫ ivy airy roots: ▫ they hang loosely from the plant stem ▫ gaining water from atmospheric moisture ▫ tropical plants
VEGETATIVE ORGANS - root parasitic roots: ▫ parasitic plants ▫ they embeds into the host tissue ▫ they draw nutrients - mistletoe
VEGETATIVE ORGANS - stem it carries the organs of photosynthesis - leaves it carries the organs of sexual reproduction – flowers it leads solutions of nutrients and storage substances it enables the growth storage function – tuber (kohlrabi)
VEGETATIVE ORGANS - stem branching
VEGETATIVE ORGANS - stem
VEGETATIVE ORGANS - leaf the main role is photosynthesis it controls water economy
VEGETATIVE ORGANS - leaf shapes of leaf blade: ▫ simple leaves have a coherent outline ▫ composed leaves are formed by separate small leaves leaf margin: ▫ entire ▫ dentate ▫ saw-like ▫ double saw-like
VEGETATIVE ORGANS – leaf margin
VEGETATIVE ORGANS – composed leafs
VEGETATIVE ORGANS – simple leafs
REVISION : 1) Vegetative organ not capable of photosynthesis is: ▫ Root 2) Branching stem can be distinguished: ▫ Racemose, furcate and cyme-like 3) What is the function of the leaf? ▫ Photosynthesis, water economy 4) Which plant has parasitic roots? ▫ Mistletoe 5) The storage root can be found for example in ▫ Carrot, horse radish
Sources of texts and pictures: DOBRORUKA, Luděk J.: Přírodopis pro 7. ročník základní školy. 1. vyd. Praha: Scientia, 1998, 152 s. ISBN