(Please choose from the lettered responses below.) Phylogenetic trees help us understand: 1. the genetic relationships among a species. 2. the evolutionary relationships among a species. 3. the relationships of symmetry among related species. 4. the level
A. 1 and 2
B. 2 and 3
C. 2 and 4
D. 3 and 4
C
Biology & Microbiology
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The simplest eye structure, which is able to perceive light but not form an image, is called a(n) ____
a. compound eye b. single-lens eye c. ocellus d. ommatidia e. photoreceptor
Biology & Microbiology
Turbellarians detect small prey items using chemoreceptors
Indicate whether the statement is true or false
Biology & Microbiology
The specialized structure in a tube worm in which endosymbiotic, chemolithotrophic bacteria live is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
The type of polio that involves the infection of the brain stem and medulla is
A. asymptomatic polio. B. post-polio syndrome. C. bulbar poliomyelitis. D. minor polio. E. non-paralytic polio.
Biology & Microbiology