A stalked, sessile marine organism has several feathery feeding structures surrounding an opening through which food enters. The organism could potentially be a cnidarian, a lophophorate, a tube-dwelling worm, a crustacean, or an echinoderm. Which of the following traits, if found in this organism, would allow the greatest certainty of identification?
A) the presence of what seems to be radial symmetry
B) a hard covering made partly of calcium carbonate
C) a digestive system with mouth and anus separate from each other
D) a water vascular system
E) a nervous system
Mother giraffe and calves feeding. It is mostly the females that raise young, and they may gather in
Pacific Silver Fir cone debris from feeding Douglas Squirrels, North Cascades National Park
An adult tooth, longitudinal view showing internal structures of the crown and root.
The clinical division of the abdominal region into quadrants with related organs and structures.
Breast-Feeding Mothers Have Increased Nutrient Needs
Multicelled organism