Trichoplax adhaerens resembles?
a. snail
b. sea anemone
c. sea star
d. sponge
e. a hairy sticky plate
Answer: e
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Cl + e- ? Cl- is an example of a:
A. polymerization. B. ionization. C. reduction. D. oxidation.
Nitrogen fixation is
A) rare among microorganisms. B) widespread among microorganisms. C) limited to Proteobacteria. D) common in Bacteria, but absent in Archaea.
When the heart muscle is relaxed it is in ________.
a) systole b) diastole
One assumption about plant reproduction is that because it requires so much matter and energy, reproductive output is resource-limited. Which statement provides evidence that this assumption may be incorrect?
A) There is a correlation between the amount of sunlight a plant receives and how much fruit it produces. B) Hand-pollinated plants produce more seeds than naturally pollinated plants. C) Plants growing in moist conditions produce more flowers than plants growing in dry conditions. D) Domesticated plants produce more seeds than wild plants.