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

Answer: (E)

Verified step by step guidance

1. 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.
2. Recognize that wind-pollinated plants rely on wind rather than animals for pollination, so they do not need to attract pollinators.
3. Identify which flower part is primarily involved in attracting pollinators: Petals are colorful and fragrant to attract pollinators.
4. Consider the energy conservation strategy of wind-pollinated plants: They conserve energy by not producing parts that are unnecessary for wind pollination.
5. Conclude that petals are unnecessary for wind-pollinated angiosperms because they do not need to attract pollinators.