What is the term for an inducible whole-body resistance in plants in response to a wide range of pathogens and abiotic stressors?
a. systemic acquired resistance
b. hypersensitive response
c. vernalization
d. abscission
e. pathogen resistance response
a
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Arthropods having two pairs of antennae belong to the subphylum:
a. Chelicerata. b. Insecta. c. Crustacea. d. Pycnogonida. e. Cirrepedia.
(n) ____________________ stem cell gives rise to other specialized cell types. Fill in the blank(s) with the appropriate word(s)
A key limitation of the coefficient of community is that it lacks the ability to
A) compare relative abundances of each species. B) calculate the similarity between two communities. C) know the number of species common between communities. D) compute a percent similarity value.
Which of the following regions has the greatest distribution of HIV infection and AIDS in the world?
A) North America B) Eastern Europe and Central Asia C) South and Southeast Asia D) sub-Saharan Africa E) Latin America