Question

fleece means :
spongelike central cylinder of the stems of flowering plants
outer coat of especially sheep and yaks
the aggregate of leaves of one or more plants
the dead and rotting body of an animal; unfit for human food

Explanation:

The term "fleece" commonly refers to the woolly outer - coat of animals like sheep and yaks. It is a well - known textile source. The other options describe different botanical or zoological concepts that are not related to the meaning of "fleece".

Answer:

outer coat of especially sheep and yaks