Fungi form symbiotic relationships with many plants at the root system level. What are these structures where plant roots connect to the underground part of the fungus called?
a. hyphae
b. haustoria
c. mycorrhizae
d. thallus
c. mycorrhizae
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Clay in soils represents a trade-off in nutrient availability, such that _____
A) anions are less likely to leach out of soil and are difficult for plants to extract B) cations are less likely to leach out of soil and are difficult for plants to extract C) nitrogen levels are exceptionally high, but much of the nitrogen leaches away D) oxygen levels are exceptionally high, but much of the nitrogen leaches away
Which of the following terms or names has nothing to do with the use of two drugs simultaneously?
A) antagonism B) Salvarsan C) Septra D) synergism
Hooker’s evening primrose keeps its flowers closed until the early evening when they open. This is an example of
____.
a. phototropism b. vernalization c. a circadian rhythm d. photoperiodism e. apical dominance
when does fluid phage occur?
What will be an ideal response?