Deciduous. Deciduous means falling off at maturity or tending to fall off, and is typically used in reference to trees or shrubs that lose their leaves seasonally, and to the shedding of other plant structures such as petals after flowering or fruit when ripe.
A combo box is a text box with a list box attached. This type of control enables users to select a predefined value in a list or type their own value in the text box portion of the control. The list is hidden until the user clicks the arrow next to the box.
The 1 Simple Combo style of combo box operates in a manner similar to the Drop Down Combo in that the user can either select an item from the list or type a new entry. The difference is that the list does not drop down like a ListBox, you determine the height of the list portion at design-time.