Lemon Pound Cake with Berries and Whipped Cream

Name: Lemon Pound Cake with Berries and Whipped Cream
Ingredients: 3 cups sifted all purpose flour (sifted, then measured); 1 tablespoon baking powder; 3/4 teaspoon salt; 3 1/3 cups sugar, divided; 1 cup (2 sticks) unsalted butter, room temperature; 1/2 cup solid vegetable shortening, room temperature; 5 large eggs; 1 cup whole milk; 6 tablespoons fresh lemon juice; 2 tablespoons grated lemon peel; 4 cups halved hulled strawberries; 2 1/2-pint containers fresh blackberries; Whipped cream