Statement 2 is wrong because the text explicitly states that Eubacteria are 'true bacteria' (the prefix 'Eu' means true) . Statement 1 is correct: Chrysophytes include diatoms and golden algae (desmids) . Statement 3 is correct: Phycomycetes are often referred to as 'algal fungi' due to their aquatic habitat and thallus structure (though the text focuses on their habitat and coenocytic mycelium, this is a standard biological fact consistent with the context) . Statement 4 is correct: Cyanobacteria are also referred to as blue-green algae .