Solve: 56 - [35 - {18 ÷ 6 - (18 - 20 ÷ 4) ÷

In British Drug House (BDH) method of pH testing, soil is mixed with distilled water, universal indictor solution and ______for a colour reaction.

In Pearson's correlation coefficient, what does a value of -1 indicate?

When pollen from a flower of one plant falls on the stigmas of other flowers of the same plant, as in Maize is known as ______

Match the following:

Which one of the following Soil crusting is a problem?

Match the following with correct definition:

i. Monophagous - a) Feeds on a few related species of host plants 

ECR stands for............................?

Spongy tissue is a physiological disorder of

The grafting technique called ‘stone grafting’ is primarily used in which fruit crop?