Which of the following is a nitrogen fixer?A) UlothrixB) Anabaena and

1.	Which of the following is a nitrogen fixer?A) UlothrixB) Anabaena and NostacC) ParameciumD) All of these
Answer» Correct Answer is: B) Anabaena and Nostac In some cases, the diastrophic partner is a cyanobacterium, such as Anabaena in coralloid roots of Cycads or Nostoc in stems of Gunnera. Particularly interesting is the symbiosis between the cyanobacterium Anabaena azollae and the leaves of the aquatic fern Azolla.

Which of the following is a nitrogen fixer?A) UlothrixB) Anabaena and NostacC) ParameciumD) All of these

Answer»

Correct Answer is: B) Anabaena and Nostac

In some cases, the diastrophic partner is a cyanobacterium, such as Anabaena in coralloid roots of Cycads or Nostoc in stems of Gunnera.

Particularly interesting is the symbiosis between the cyanobacterium Anabaena azollae and the leaves of the aquatic fern Azolla.