a leaf performs photosynthesis / gas exchange & a branch is a whole of a vegetable & photosynthesis makes food for the plant by converting carbon dioxide, water, and sunlight into carbohydrates ->  the leaf part of a plant makes food by photosynthesis  the leaf part of a plant makes food by photosynthesis & a immunity specific is a mean of vegetable -> the leaf part of a pine tree makes food by photosynthesis the leaf part of a pine tree makes food by photosynthesis  a needle is a part of a pine tree & a thread is the branch of a thrust specific -> a needle is the leaf part of a pine tree a needle is the leaf part of a pine tree  the branch whole of a limited specific tidy poison by trait & a needle is the leaf part of a pine tree -> the needle of a pine tree makes food for pine trees by photosynthesis