set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following is a biofertilizer?

a) Streptocycline

b) Urea

c) 2,4-D

d) Azolla

Question : 2

Which of the following is a source of biofertilizer?

a) Azolla

b) Yeast

c) Chlorella

d) Mold

Question : 3

Azolla gives a good biofertilizer when mixed with

a) Cow dung

b) Blue-green algae

c) Bone meal

d) Urea

Question : 4

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

a) Paddy

b) Wheat

c) Gram

d) Mustard

Question : 5

Azolla is

a) Aquatic bacteria

b) Aquatic Fern

c) Aquatic algae

d) None of the above

Question : 6

The capability of nitrogen use efficiency can be increased in crop production by

a) Using the slow release of nitrogen fertilizer

b) Use of split application

c) Use of nitrogen inhibitors

d) All of the above