(Science: zoology) related to, or resembling, the hydra; of or pertaining to the hydroidea.
One of the... Read More
noun, plural: periderms
(botany) An outer covering that replaces the epidermis of certain plants
(embryology)... Read More
Bryophytes (nonvascular plants) do not have xylem or phloem. The habitations of this plant group are widely varied and... Read More