Complete the nitrogen fixation line

Exercise and reference answers

Missing parts

1. Answer

   rhizobia

   Choices

   1. saprophytes
   2. rhizobia
   3. epiphytes

2. Answer

   nodules

   Choices

   1. nodules
   2. tubers
   3. lenticels

3. Answer

   nitrogenase

   Choices

   1. amylase
   2. ribonuclease
   3. nitrogenase

Complete the statement

Soil bacteria called {0} settle in {1} on legume roots, where the enzyme {2} turns nitrogen gas into ammonia.

Instructions

Tap the right word for each blank to finish the sentence.

Explanation