The muscles of the body wall are derived mainly from which embryonic cell layer in most
eumetazoans?
a. mesoderm
b. epiderm
c. mesoglea
d. endoderm
e. ectoderm
A
You might also like to view...
A yogurt, which had "contains live cultures" on its label, was transferred onto an acidic carbohydrate-containing medium for selective enrichment. Eventually, isolates of the ________ genus were obtained
A) Lactobacillus B) Leuconostoc C) Peptococcus D) Streptococcus
Which is the simplest of all levels of organization?
A. atom B. cell C. organ D. organism E. population
Scientists have discovered that when they provide supplemental food for hares, their density tripled. The figure above shows cycles of lynx and hare populations over a century's time. What do you predict would happen to the lynx and hare populations in an area where hares were provided supplemental food for one year?
A. The lynx population would increase 1-2 years after the hares increased, then both would continue cycling down and up. B. The lynx population and the hare population would increase simultaneously, and stay at a stable high level permanently. C. The lynx population would decrease as hares increased due to exploitative competition, then slowly rise back to the original level. D. The hare population would increase, but the lynx population would be unaffected.
Unique features of animals include ingesting their food, having a cell wall, and the ability to move at some point in their life cycle.
Answer the following statement true (T) or false (F)