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Select the Choice Describing the Earliest Event in the Endosymbiosis

Question 53

Multiple Choice

Select the choice describing the earliest event in the endosymbiosis between plants and nitrogen-fixing bacteroids:


A) bacteroids release ammonium and amino acids to plants
B) plant TCA cycle releases C4-dicarboxylic acids to bacteroid
C) bacterial cells differentiate into bacteroids
D) bacteria move up infection thread
E) infection thread enters root cortex

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