What Structure is the arrow pointing at? 

What Structure is the arrow pointing at? 

What is the name of the brown structure identified by the wh…

What type of lichen is this? 

What type of fungus is seen on this lichen slide? 

Is this a monocot or dicot stem? 

Are you looking at the sporophyte or gametophyte stage of th…

Are you looking at the sporophyte or gametophyte stage of th…

What subgroup is this animal from? 

All of the following are principal activities of antibodies,…