Farmers are protesting in Punjab due to crop infestation in their tomato farms. The government has taken a measure and framed a policy for not allowing use of certain chemical pesticides to protect the environment and health. The farmers feel as a result of this their crops are suffering infestation and leading to losses. The government has approached your research institute to understand and find a solution to the problem. 

A team of scientists starts looking at the problem. 

The researchers first understand which fertilizers are being used by farmers and make sure that it's not the cause of the problem. The fertilizers used contain the elements phosphorous (P) and nitrogen (N). 

Looking at the plant cell structure below, name two parts of the cell where phosphorous and nitrogen will be used most.