Which part of cotton plant is used for tissue test

A. All the above ground portion

B. The youngest fully mature leaves of the main stem

C. Fourth fully developed leaf from the top

D. The four upper leaf blades

Answer: Option B

Solution(By Examveda Team)

The youngest fully mature leaves of the main stem are used for tissue tests in the cotton plant because these are the growing cells and show the accurate status of nutrients in the plant.
Tissue analysis shows if the crop is taking up the nutrients from the soil or through the tissue from a foliar application.