Buttoning is the problem in which of the following

The deterioration or loss of the productive capacity of the soils due to various reasons like human activity is called as ____

Commodity market deals with 

Name of the insect Order in which (in general), the larval stage is phytophagous and adults are nectar feeder/sap suckers:

Pea, gulmohur, bean, Cassia have ___ type of symmetry and hance they are ____ flowers.

Which herbicide is also a hormone:

Stem nodulation occurs in green manure crop of:

Which type of fertilizer provides all three essential nutrients- Nitrogen, Phosphorus, and Potassium?

Leg less larva is known as __________:

Semigamy is found in:

Which of the following pair is NOT correctly matched?