What animal groups shown here are diploblastic?
A. Sponges
B. Cnidarians
C. Lophotrochozoans
D. Echinoderms
E. Both A and B
Ans: B. Cnidarians
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All of the following kinds of plants have at least some members that are vascular plants EXCEPT:
A. spermatophytes B. lignophytes C. tracheophytes D. bryophytes E. embryophytes
It is clear from current research on human behavior genetics that _____
a. animal models of human disease are not useful for behavior research b. epigenetics does not play a significant role in behavior disorders c. few abnormal behaviors have an environmental component d. most abnormal behaviors are due to single-gene effects e. abnormal behaviors are not due to single-gene effects
A person is exposed to rotten wood with fungal growth and develops blastomycosis. No one taking care of him/her becomes ill. Blastomycosis is an example of a ________ disease
A) contagious B) subacute C) chronic D) noncommunicable E) latent
In the logistic model of population growth, what is expected to happen to r when N = K?
a. r will approach rmax b. r will approach 1 c. r becomes negative d. r = 0 e. r > 0