Question 5
Wind-pollinated flowers have no scent, no nectar and barely any petals. Why is this not a deficiency?
The right answer is the one marked above.
There is nothing to attract, so nothing is spent on attracting. It is saved expense, not a shortcoming — and the saving goes into producing pollen in enormous quantity instead.
Scent carries perfectly well on wind, and nectar sits in the flower rather than on the pollen, so neither the scent answer nor the nectar answer would follow even if it were true. “They evolved before insects existed” is a guess about history rather than a reason.