When male moose engage in their annual battles, butting heads with their oversized antlers, they are exhibiting ____
selection.
a. stabilizing
b. disruptive
c. directional
d. intrasexual
e. intersexual
ANSWER: d
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Which soil layer, containing no organic matter, is composed of weathered rock fragments?
a. O Horizon b. A Horizon c. B Horizon d. C Horizon e. bedrock
Radish flowers may be red, purple, or white. A cross between a red-flowered plant and a white-flowered plant yields all-purple offspring. The part of the radish we eat may be oval or long, with long being the dominant trait
If true-breeding red long radishes are crossed with true-breeding white oval radishes, the F1 will be expected to be which of the following? A) red and long B) white and long C) purple and long D) purple and oval
Choose the one most appropriate answer for each.
A. Endemic B. Extinct species C. D. Conservation biology E. Endangered species F. Ecological restoration G. Biodiversity hot spots H. Threatened species I. Biological magnification J. K. Bioaccumulation
What class is alos known as the "ray finned fishes"
A. Actinopterygii B. Cephalaspidomorphi C. Chonrichthyes D. Myxini E. Sarcoptergii