Raznovrsnost riba. Ribe su najbrojnija grupa kičmenjaka, ima ih oko 28 hiljada vrsta, od toga najveći broj prave košljoribe. U ovoj prezentaciji moći ćete da saznate na osnovu kojih osobina smo ribe podelili na hrskavičave i koštane, predstavike svake grupe, mnoštvo slika i primera, kao i zanimljivosti.
Raznovrsnost riba. Ribe su najbrojnija grupa kičmenjaka, ima ih oko 28 hiljada vrsta, od toga najveći broj prave košljoribe. U ovoj prezentaciji moći ćete da saznate na osnovu kojih osobina smo ribe podelili na hrskavičave i koštane, predstavike svake grupe, mnoštvo slika i primera, kao i zanimljivosti.
Stems have four main functions: support, conduction, growth, and storage. They support leaves, flowers, and fruits. Stems can be woody or herbaceous, annual or perennial. Stem anatomy includes primary and secondary tissues. Primary tissues include the epidermis, cortex, and central cylinder. Secondary growth occurs via the vascular cambium, adding secondary xylem and phloem. Stems also have specialized structures like rhizomes, tubers, bulbs, photosynthetic stems, stolons, thorns, and tendrils that serve functions like storage, reproduction, and support.
The document summarizes the structure and function of the nervous system. It is divided into the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS). The CNS controls and coordinates body activities, while the PNS connects the CNS to other parts of the body. Within the nervous system are neurons, which transmit signals, and the brain, spinal cord, nerves, and ganglia through which signals travel from the CNS to the rest of the body and back.
Час креиран за конкурс Дигиталне школе http://www.digitalnaskola.rs/konkurs/dc2/zbornik/brojPrijavaPoPredmetuIRazredu/razred_5/Srpski%20jezik_maternji%20jezik%20pr/904.html