The term 'FUNGUS SEED' can be broken down into two words, 'FUNGUS' and 'SEED'. FUNGUS is a type of organism that is neither plant nor animal, and is typically found in moist environments. Seeds are the reproductive structures of plants, which contain the genetic material necessary for the growth of a new plant. In this crossword, the solution to the clue 'SPORE' (5 letters) is the word 'SPORE', which is a reproductive structure produced by some fungi and bacteria. Spores are typically much smaller than seeds, and are adapted for dispersal and surviving in harsh environments.