Section 60A.16, and all other laws and parts of laws, in so far as they may be inconsistent with sections 61A.39 to 61A.42 and 61A.44 to 61A.50, shall not apply to corporations transacting the business of life or casualty insurance solely upon the cooperative or assessment plan, as defined in sections 61A.39 to 61A.42 and 61A.44 to 61A.50.