set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one of the following is not correctly matched? Nitrogen fixing Crop agent

a) Azotobacter - Wheat

b) Blue-green algae - Paddy

c) Rhizobium - Pea Leguminisarum

d) Azolla – Maize

Question : 2

Which bacteria is responsible for nitrogen fixation in soyabean?

a) Rhizobium fajioleai

b) Rhizobium leguminosarum

c) Rhizobium japonicum

d) Rhizobium traitolai

Question : 3

Azolla is often used as biofertilizer because it is associated with

a) Fungus

b) Blue-green algae

c) Red algae

d) Moss

Question : 4

Which of the following microorganisms are used as biofertilizer?

a) Virus

b) Cyanobacteria

c) Protozoa

d) None of the above