86721
These may be specialized " buds " , or motile sexual reproduction products , or even a sort of alteration of generations as in certain cnidaria .
 cnidaria
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 cnidaria