Mycelium- mushrooms(:

Mycelium is a vegetative part of a fungus, just like the mushrooms.

Unicellular organism- yeast/bread(:

Yeast in bread only contains one cell.

Genetically modified organism tomato(:

GMO is an organism whose genetic material has been altered using genetic engineering techniques .
Tomatoes were produced by the DNA technology, combining genes from different organisms.

Eubacteria- yogurt(:

Most eubacteria are helpful, like they turn milk into yogurt when the fermentation is completed.

Pollen- inside the flower(:

Pollen is yellow, dust like and produced by the male part of the flower(stamen).

P.S. I had to type this twice:/ the first time i posted it all the descriptions disappeared.