Which of the following is not a method of group

When did cotton become a well-established crop in the Indus River Valley?

When a cross is made between offspring and its recessive parent , it is known as 

Principal of extension education is

The gynoecium occupies the highest position while the other parts  are  situated below  it. Which type of flower is that? 

A company maintains competitive edge over competitors with an agreement enforced through 

Ooze test is used for the detection of ___

Which principle of IPM encourages the use of biological control agents, such as Predators or parasitoids, to manage pests? 

According to the botanical classification cashew belongs to which family among the following:

T and V system, 1974 started by Daniel Benor is also known as

A soil with a PH value of 8 is considered