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Fluid which circulates throughout the body of an animal, distributing nutrients, and often oxygen as well.
Industry:Biology
Arthropod appendages that are biramous have two branches, an outer branch and an inner branch. These branches may have separate functions; in crustaceans, for instance, the inner branch of a leg is used for walking, while the outer branch may be paddle-shaped or feathery and often functions as a gill. Contrast with uniramous.
Industry:Biology
A vertebrate distinguished by a skull with no openings in the side behind the eyes, e.g. turtles.
Industry:Biology
End of the digestive tract, or gut, through which waste products of digestion are excreted, as distinct from the mouth.
Industry:Biology
An egg that can be laid on land due to the presence of a fluid-filled amniotic sac (amnion) that cushions and protects the developing embryo. amniote - n. Any of a group of land-dwelling vertebrates that have an amnion during embryonic development, including reptiles, birds, and mammals. Most extant mammals give live birth, the egg being retained inside the body during gestation.
Industry:Biology
Refers to animals with young that are unable to move on their own after hatching or birth, and require extensive parental care. Songbirds, dogs, and humans are examples of species with altricial young.
Industry:Biology
Region of the body furthest from the mouth. In insects, the third body region behind the head and thorax.
Industry:Biology
Region of the body furthest from the mouth. In insects, the third body region behind the head and thorax.
Industry:Biology
