A theoretical concept that is used to understand how and why certain organisms can be sorted into discrete taxonomic groups is known as the ________.
A. endosymbiotic theory
B. genotypic concept
C. phylogenetic concept
D. species concept
Answer: D
Biology & Microbiology
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Organisms that obtain heat primarily from the external environment are called ____
a. endotherms b. isotherms c. exotherms d. ectotherms e. allotherms
Biology & Microbiology
Four of the five adaptations below allowed animals to live on land. Select the exception
a. eggs that can develop out of water b. waterproof skin c. lungs d. ectothermy e. internal fertilization
Biology & Microbiology
___________, or water bears, have a reduced coelom and molt. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
The most developed sense in humans is
a. hearing. b. vision. c. taste. d. smell.
Biology & Microbiology