There are exempted from the taxes imposed by this chapter the gross receipts from sales of, and the storage, use or other consumption of:
1. Any form of animal life of a kind the products of which ordinarily constitute food for human consumption.
2. Feed for any form of animal life of a kind the products of which ordinarily constitute food for human consumption or are to be sold in the regular course of business.
3. Seeds and annual plants the products of which ordinarily constitute food for human consumption or are to be sold in the regular course of business.
4. Fertilizer to be applied to land the products of which are to be used as food for human consumption or sold in the regular course of business.