Diatoms are commonly used in which of the following commercial products?
a. pool filters
b. reflective paints
c. cosmetics
d. a and b
e. a, b and c
Ans: d. a and b
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Choose the true statements about species that show convergent evolution. Check all that apply.
_____ do not share a recent common ancestor _____ must be found in the same biogeographical region _____ subject to similar selection pressures _____ have similar phenotypes
Four of the following plants aremonocots. Which one is the exception?
a. orchid b. wheat c. maple d. grass e. palm
Keystone species
a) occur only in intertidal zones b) can be removed from a habitat without any impact on the remaining species in the habitat c) play an unusually important role in determining the species composition in a habitat d) are primary produces, and therefore, are usually plants e) are more expendable than commensal species, from a conservation perspective
The vaccine for immunity to Haemophilus influenzae serotype b is
What will be an ideal response?