If the NPW is zero, then B/C ratio is

Famine of Ireland was due to

Middle lamella, the outmost layer in plant cell wall is made up of

Polyembryony occurs in

The following are the steps of chemiosmotic ATP synthesis in the light reaction. Arrange them in correct order of their occurence-

Marine Products Export Development Authority has how many quality control laboratories?

A non selective translocated herbicide is

Sand drown disease in tobacco is caused by deficiency of

Which of the following is not a measure of dispersion?

Intercultivation operations are meant for