set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Azolla gives a good biofertilizer when mixed with

a) Cow dung

b) Blue-green algae

c) Bone meal

d) Urea

Question : 2

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 : 3

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

a) Azotobacter

b) Azospirillum

c) Azolla

d) Rhizobium

Question : 4

Which of the following is a biofertilizer?

a) Streptocycline

b) Urea

c) 2,4-D

d) Azolla

Question : 5

Aquatic Fern, which is used as a biofertilizer is

a) Marsilia

b) Salvinia

c) Azolla

d) Pteridium

Question : 6

Blue-green algae are chiefly used as biofertilizer in the crop of

a) Paddy

b) Wheat

c) Gram

d) Mustard