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
Warbler feeding zones
The Australian painted lady feeding on a flowering shrub
Larynx, trachea, bronchi, and lungs with an expanded view showing the structures of an alveolus and
The uterus and associated structures.
Repeating structures of some glycosaminoglycans
Canis lupus feeding on caribou