Sec. 481.121.  OFFENSE: POSSESSION OF MARIHUANA.  (a)  Except as authorized by this chapter, a person commits an offense if the person knowingly or intentionally possesses a usable quantity of marihuana.

(b)  An offense under Subsection (a) is:

(1)  a Class B misdemeanor if the amount of marihuana possessed is two ounces or less;

(2)  a Class A misdemeanor if the amount of marihuana possessed is four ounces or less but more than two ounces;

(3)  a state jail felony if the amount of marihuana possessed is five pounds or less but more than four ounces;

(4)  a felony of the third degree if the amount of marihuana possessed is 50 pounds or less but more than 5 pounds;

(5)  a felony of the second degree if the amount of marihuana possessed is 2,000 pounds or less but more than 50 pounds; and

(6)  punishable by imprisonment in the institutional division of the Texas Department of Criminal Justice for life or for a term of not more than 99 years or less than 5 years, and a fine not to exceed $50,000, if the amount of marihuana possessed is more than 2,000 pounds.