A virion is a(n)
A. pathogenic virus.
B. subviral particle.
C. complete, extracellular virus particle.
D. enveloped virus particle.
C
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The animal phylum with the most species is
(a) Mollusca. (b) Annelida. (c) Arthropoda. (d) Platyhelminthes.
Which of the following types of plant hormones triggers plant responses to environmental stresses
such as cold snaps, high salinity, and drought?
a. abscisic acid b. cytokinins c. oligosaccharins d. jasmonates e. ethylene
The main evolutionary advantage of sexual over asexual reproduction is that it produces _____
a. more offspring per individual b. more variation among offspring c. healthier offspring
?
?
Figure 36.6
Use the figure above to answer the following question.
The anatomical structure identified with the letter "D" in the accompanying figure is the ____.
A. myocardium B. pulmonary veins C. inferior vena cava D. right atrium E. heart apex