Glossary | V

Vascular plants
plants that have vessels to conduct and circulate fluids around their parts
Vasculated
having numerous blood vessels
Velum
shelf or rim that projects inward around the margin of the bell of a hydozoan, partially closing the opening
Venom
a toxin injected into a victim
Ventral
toward the lower side or belly; underside; opposite of the dorsal side
Vertebrate
animal with a backbone: having a dorsal column of vertebrae
Vertical migration
periodic movement of an animal up and down the ocean's water column
Vertical zonation
distinct banding of groups, populations or organisms at different levels of a habitat
Vestigial
usually a non-functioning remnant of a body part that once existed as a fully functioning part of an organism
Vibrissa
whisker(s) of mammals, plural: vibrissae
Viviparous
producing living young that develop from eggs retained within the mother's body, receiving nourishment through the placenta