1. Wolffia ('least duckweed') is the smallest flowering plant.   True   False   2. Ferns have leaves, stems, and roots.   True   False   3. Cycas is a _______ plant.   naked-seeded   closed-seeded   4. Mango is a _______ plant.   flowering   non-flowering   5. Australian Cedar tree is the tallest flowering plant.   True   False   6. _______ is a closed-seeded flowering plant.   Spruce   Oak   Pine   Fir   Hint Half-n-half Clue   7. _______ is a naked-seeded plant.   Cedar   Sunflower   Maple   Guava   Half-n-half Clue