Scelta multipla
In a typical conifer, how long does it take for fertilization to occur after pollination?
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28. Plants
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Scelta multipla
Like gymnosperms, many grasses and angiosperm trees are wind-pollinated. To conserve energy, these angiosperms do not produce complete flowers (complete flowers have all four of the basic parts). Which part would be unnecessary for wind-pollinated angiosperms?
A
Sepals
B
Anthers
C
Ovaries
D
Fruits
E
Petals
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Understand the function of each flower part: Sepals protect the developing flower, anthers produce pollen, ovaries contain ovules, fruits develop from ovaries and aid in seed dispersal, and petals attract pollinators.
Recognize that wind-pollinated plants rely on wind rather than animals for pollination, so they do not need to attract pollinators.
Identify which flower part is primarily involved in attracting pollinators: Petals are colorful and fragrant to attract pollinators.
Consider the energy conservation strategy of wind-pollinated plants: They conserve energy by not producing parts that are unnecessary for wind pollination.
Conclude that petals are unnecessary for wind-pollinated angiosperms because they do not need to attract pollinators.
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