Question

sponge knowledge check
if the freshwater supply evaporates, freshwater sponges become dormant and form an internal bud or ______ which is release when the sponge dies.
offspring
piece
gemmule
frag

Explanation:

Freshwater sponges form gemmules when the water supply evaporates. Gemmules are internal buds that can survive harsh conditions. When the sponge dies, gemmules are released. Offspring refer to new individuals produced by reproduction, which is not the case here. A "piece" is too vague. "Frag" is likely a mis - spelling (maybe "fragment", but it's not the correct term for this biological structure).

Answer:

gemmule