In a tide pool, invertebrate species richness was 15. A researcher experimentally removed one species and over time the species count decreased to eight. The species removed was likely a(n)
A) mutualist.
B) herbivore.
C) detritivore.
D) keystone species.
E) C or D
Ans: D) keystone species.
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Each of the following is a primary purpose of the inflammatory response except:
A) to localize the infection. B) to neutralize any toxins being produced at the site. C) to prevent the spread of microbial invaders. D) to stimulate the production of opsonins.
If one of the parents in a dihybrid cross possesses the PpTt alleles, which allele combination is not possible in their gametes?
a. PT b. Pp c. Pt d. pT e. pt
Which of the following is true regarding diffusion?
a. The larger the solute, the faster diffusion will occur. b. The colder the temperature, the faster diffusion will occur. c. The fewer solute particles in a solution, the faster diffusion will occur. d. The less dense a solvent is, the faster diffusion will occur.
Selection is the differential reproduction of genotypes, resulting from their variable fitness
Indicate whether the statement is true or false