Duckweed is a small,flowering plant that floats at the water's surface.It tends to grow best when nutrient levels are high.When duckweed is abundant,it forms tight mats that cover the surface of ponds and lakes.Consider a situation in which spring storms bring an influx of water and nutrients into a small 4-acre pond,and duckweed populations suddenly explode.Duckweed covers nearly all the surface of the pond,but is regularly washed over the spillway only to be replaced rapidly by the growth of new duckweed plants.
-In this pond,experiencing cultural eutrophication,the growth of this duckweed will
A)add nutrients to the pond and encourage the growth of phytoplankton.
B)remove nutrients from the pond and encourage the growth of phytoplankton.
C)add nutrients to the pond and slow the growth of phytoplankton.
D)remove nutrients from the pond and slow the growth of phytoplankton.

Question

Quizplus · Accepted Answer

Duckweed removes nutrients from the water as it grows, which can reduce the availability of nutrients for phytoplankton. Additionally, by covering the surface of the water, duckweed blocks sunlight, further inhibiting the growth of phytoplankton.

Duckweed Is a Small,flowering Plant That Floats at the Water's