1. Filamentous green alga of freshwater\r\n2. Mould from bread with mycelium and spoor\r\n3. Sunflower root, transversal section\r\n4. Privet transversal section of leaf (Ligustrum)\r\n5. Tulip, transversal section of ovary arrangement ovules\r\n6. Paramecium ciliates\r\n7. Earthworm transversal section through midbody\r\n8. House fly, wing whole mount\r\n9. Frog, blood smear\r\n10. Chick, skin of a bird lateral section with feathers.