Lamarckian evolution

         In the lacmarckian evolution, Jean Baptiste de Lamarck would describe the venus flytrap that how will the venus flytrap will able to close its mouth with a huge insect that is inside of the venus flytrap mouth. Also how does it digest the insect because it is not an animal, it is only a plant. How can a plant can only survive in North Carolina but not the rest of the states in U.S.A and also in the countries. Also how can a venus flytrap can eat an insect if it doesn't have any animal organs to digest the insect.