A Farmer is cultivating different vegetable crops in a field. One day he could see white rust symptoms of Albugo destroying the Greens but all other crops are found healthy. He reports this observation to you. Can you find out the reason why this pathogen has not attacked other vegetable crops

Explanation

1. Each pathogen is specific to a host and cannot attack all organisms.
2. Albugo causes white rust in greens which is the specific host plant for it. Hence other vegetable crops are found healthy.