set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following is/are used as biofertilizers?

1. Azolla
2. Blue-green algae
3. Alfalfa

a) 1 and 3

b) Only 2

c) 1 and 2

d) 1, 2 and 3

Question : 2

The biofertilizer used as a supplemenatry food for the cattle, especially for milking bovinces is

a) Azotobacter

b) Azospirillum

c) Azolla

d) Rhizobium

Question : 3

Which of these is not correctly matched?

a) Bio 902 - Variety of mustard

b) Blue-green algae - Biofertilizer

c) Chrysopa - Maho-control

d) Azotobacter – Bioinsecticide

Question : 4

Azolla gives a good biofertilizer when mixed with

a) Cow dung

b) Blue-green algae

c) Bone meal

d) Urea