Four of the five features listed below are found in the
same animal. Select the exception.
a. first segmented form
b. possess nephridia
c. jointed appendages
d. clitellum
e. complete gut with closed circulatory system and
coelom
Answer: c
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Based on the tree shown, vascular tissues is a synapomorphy defining which of the following groups?
A. lycophytes and angiosperms + gymnosperms + ferns B. ferns and angiosperms + gymnosperms C. angiosperms and gymnosperms D. lycophytes and angiosperms + gymnosperms E. hornworts and lycophytes + ferns + gymnosperms + angiosperms
What do synaptic signaling and paracrine signaling have in common?
A. Cells release a signal that affects it and neighboring cells. B. Cells release a signal that affects cells at long distances. C. Cells release a signal through gap junctions to affect neighboring cells. D. Cells bind a membrane bound signal on a neighboring cell. E. Cells release a signal that affects neighboring cells.
All of the following are characteristics of IgM except
A. it contains a central J chain. B. it has 10 antigen binding sites. C. it is the first class synthesized by a plasma cell. D. it is a dimer. E. it can serve as a B-cell receptor.
If the frequencies of recessive and dominant alleles in a population do not change over time, that population
a) is evolving b) is migrating c) is exhibiting genetic drift d) is in Hardy-Weinberg equilibrium e) will soon be extinct