Hind leg bones in whales are an example of ____ structures
a. vestigial
b. analogous
c. homologous
d. adaptive
e. fossilized
ANSWER: a
You might also like to view...
Which biome is characterized by plants whose leaves drop off in the wintertime?
a. coniferous forest b. tundra c. temperate deciduous forest d. tropical rain forest e. boreal forest
A difference in charge between guard cell cytoplasm and extracellular fluid is called ____
a. osmosis b. tension c. turgor d. pressure gradient e. voltage
Pharyngeal arches will become all of the following EXCEPT
a. the face. b. the neck. c. the mouth. d. structures associated with the head region. e. lower stomach.
What group was likely ancestral to land plants?
A. multicellular green algae found in marine habitats B. multicellular brown algae found in terrestrial habitats C. multicellular green algae found in freshwater habitats D. multicellular brown algae found in marine habitats