Adult tunicates resemble __________ and are __________
a. eels; carnivorous.
b. corals; photosynthetic
c. starfish; carnivorous
d. sponges; filter feeders
e. earthworms; detritivores
D
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A central vacuole
(a) is found only in plant cells. (b) may take up between 50% and 90% of the cell’s interior. (c) regulates water balance. (d) is all of the above.
Indicate the phylogenies that show the same relationship as the phylogeny above (Select all that apply).
_____ 
_____ 
_____ 
_____ 
When blood leaves the heart, it first enters
A) capillaries. B) arterioles. C) venules. D) veins. E) arteries.
Answer the following questions true (T) or false (F)
1. Ecological dominants are always the most abundant members of a community. 2. Because their absence may have negative repercussions for population control and resource use for the whole community, lions on the African savanna are identified as a keystone species. 3. To be a keystone species, an organism must be the most numerous species in an environment.