These plants produce small fruits called samara in pairs that are affectionately known as whirlybirds. For 10 points each:
[10e] Name this genus of tree that has silver, sycamore and Norway species. These trees can be tapped in the spring to produce sugary syrup and a leaf from these trees is found on the Canadian flag.
ANSWER: maple [accept Acer; accept specific maples like sugar maple]
[10m] Maples and other trees in North America are under threat from this order of insects. Invasive examples of these insects include the emerald ash borer and an Asian long-horned species.
ANSWER: beetles [or Coleoptera; accept jewel beetles or Asian long-horned beetles]
[10h] Maple trees undergo partheno-carpy, which means some maples do not produce these things. Failure to produce these things can also arise from steno-spermo-carpy.
ANSWER: seeds [accept seedless fruit; prompt on embryo]
<Biology>