Submitted by admin on Thu, 04/24/2014 - 22:36
definition:
A solitary or colonial sedentary form of a coelenterate such as a sea anemone, typically having a columnar body with the mouth uppermost surrounded by a ring of tentacles
sentence:
Most hydrozoans alternate between a polyp and a medusa stage - they spend part of their lives as ‘jellyfish’ which are hard to distinguish from scyphozoan jellyfish.
difficulty:
medium
toefl frequency:
2