Only 180 living species of velvet worms, characterized by jaws, an open circulatory system, and relatively large
brains, comprise the ____ Ecdysozoan phylum.
a. Arthropoda
b. Onychophora
c. Nemertea
d. Annelida
e. Nematoda
ANSWER: b
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While studying for an anatomy exam, some of your fellow students are having difficulty locating the clitoris. Where would you tell them to find it?
a. equidistant from the urethra and the cervix b. contained within the medulla of the ovary c. ventral to the vagina, between the labia majora d. within the upper region of Utopia Planitia
Photoperiodism is the
a. duration of flowering in a plant. b. amount of light needed by a plant to exhibit normal growth. c. response of a plant to the duration of light and darkness. d. light phase of photosynthesis during which photolysis of water occurs. e. opposite of photorespiration
Normal fruit fly larvae move away from their food after eating. However, some larvae that were subjected to X-rays remain near or in their food after eating. There is a consistent difference in the DNA of these two types of larvae
What can we conclude about this behavior? A) It is an innate behavior. B) It appears to be entirely learned. C) Nothing can be concluded about this behavior from the information provided. D) It has a clear genetic component.
In the event that your treatment variable suffers from perfect multicollinearity with one of your controls, a viable remedy is:
A. change the population to one, where the treatment and control are not exactly linearly related. B. drop the control variable. C. use the within estimator. D. drop the treatment variable of interest.