Fossil Evidence Places the Origin of Angiosperms in the Early

question 50

Multiple Choice

Fossil evidence places the origin of angiosperms in the early Cretaceous period,at least 130 million years ago.By 100 million years ago,all of today's major lineages of angiosperms were in place.Angiosperms make up 95% of all modern plant species.Which of the following may help explain the rapid success of angiosperms?

• A) use of the wind to disperse pollen and seeds
• B) Animals eating the plants helped to disperse both pollen and seeds.
• C) use of the wind to disperse spores
• D) use of water to disperse pollen and seeds
• E) Flowers and fruits help protect and disperse both pollen and seeds.

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Definitions:

Gradient

The degree of steepness or incline of a slope, or the rate of change of any physical property in space.

Gradient

The rate of change of a physical quantity (such as temperature, pressure, or elevation) with distance.

Deposition

The process by which sediments, minerals, and rocks are added to a landform or landmass, typically by wind, water, or ice.

Profile

A description or analysis of something that presents its key characteristics or qualities.