Hydra (genus)
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  Subject Replies Date
Why is the hydra's nervous system considered to be the most primitive? 0 4/18/2014
About how many hydra are produced in each reproductive cycle 0 2/2/2014
Which level of organization are the cnidarians? 0 1/4/2014
Which is not a way in which the solitary freshwater hydra moves? 0 1/4/2014
Does Hydra have true tissue and if so how many layers are there...is it symmetric or asymmetric and what is its cephalization 0 11/3/2013