Refer to the figure. 
Medicago truncatula, or barrelclover, is a clover-like legume that has a mutualistic association with mycorrhizal fungi. In the experiment illustrated in the figure, fungi in contact with Medicago had access to either no phosphorus, or to either 35 or 700 ?M of phosphorus. According to the figure, how did Medicago alter the amount of carbohydrate it transferred to the fungi in response to the change in fungal phosphorus levels?
A) It increased its transfer of carbohydrate when the fungi contained phosphorus.
B) It decreased its transfer of carbohydrate when the fungi contained phosphorus.
C) It transferred more carbohydrate as the fungal phosphorus levels increased.
D) It ceased its transfer of carbohydrate when fungal phosphorus levels were zero.
Correct Answer:
Verified
Q21: Refer to the figure. Q22: A bacterium provides essential amino acids to Q23: A fungus increases the ability of a Q24: Because leaf-cutter ants and fungi help each Q25: Which of these scenarios represents an example Q27: In a plant-pollinator interaction, the plant expends Q28: For an ecological interaction to be a Q29: From the act of pollinating flowers, a Q30: The studies by Pellmyr and Huth on Q31: Yucca plants retain 62% of the flowers
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents