In which one of the following is nitrogen not a constituent?

Explanation

The major storage component of Avocado fruit is oil. It is stored in specialized mesocarp cells called idioblast. An idioblast is an isolated plant cell that differs from neighboring tissues. They have various functions such as storage of reserves, excretory materials, pigments, and minerals. They could contain oil, latex, gum, resin, tannin or pigments, etc.