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
Fibroid tumors, or leiomyomas. Fibroids develop from the uterus to form a variety of hard, round ben
Options for Legal Structures Cont
Internal structures of the eye
Major Structures of the Eye
A Gaucher cell showing accumulated fat stored in structures called lysosomes
Which of the 3 structures shown below has the shortest bond length? Justify your answer.