試題詳解

26. Immature seed cones of conifers are usually green before pollination, and flowers of grasses are inconspicuously colored. What does this indicate about how they are pollinated?
(A) Their pollinating insects are probably color blind.
(B) They probably attract pollinators using strong fragrances.
(C) They probably self-fertilize and do not need pollen carried from one plant to another.
(D) They are probably wind pollinated.