[Campbell Biology P.705] Regarding specialized hyphae in mycorrhizal fungi, which statement ... | Practice Question
Regarding specialized hyphae in mycorrhizal fungi, which statement is correct?
A: Haustoria are specialized hyphae known for trapping and killing prey like nematodes.
B: Arbuscules directly penetrate the plant cell plasma membrane, allowing for direct cytoplasmic exchange between fungus and plant.
C: Mycorrhizae primarily enhance the fungus's ability to absorb organic nutrients from the soil, rather than minerals.
D: Arbuscular mycorrhizal fungi extend arbuscules through the root cell wall and into tubes formed by invagination of the root cell plasma membrane, facilitating nutrient exchange.
Explanation
The text states: 'Arbuscular mycorrhizal fungi extend arbuscules through the root cell wall and into tubes formed by invagination pushing inward, as in Figure 31.4b of the root cell plasma membrane.' It also highlights that these arbuscules 'can exchange nutrients with living plant cells,' making option D the most accurate description.