Preheat oven to 350°. In a large bowl, combine cake and pudding mix. Add the water, oil, eggs and extracts. Beat for 30 seconds on low speed. Beat for 2 minutes on medium speed. Stir in poppy seeds. Pour into a greased 10-in. fluted tube pan.
Bake until a toothpick inserted in the center comes out clean, 50-60 minutes. Cool in pan 10 minutes before inverting onto a wire rack.
Combine confectioners' sugar and lemon juice; brush over warm cake. Cool. Dust with additional confectioners' sugar if desired.