Biology, 10.02.2020 22:33 hollandhogenson
Pond A:
Cattails, bulrushes, and water lilies grow in the pond. These plants have their roots in the bottom of the pond, but they can reach above the surface of the water. This pond is an ideal habitat for the animals that must climb to the surface for oxygen. Aquatic insect larvae are abundant. They serve as food for larger
insects, which in turn are food for crayfish, frogs, salamanders, and turtles
Pond B:
Plankton growth is rich enough to support animals that entered when the pond was connected to the lake. Fish make nests on the sandy bottom. Mussels crawl over the bottom.
Pond C:
Decayed bodies of plants and animals form a layer of humus over the bottom of the pond. Chara, branching green algae, covers the humus. Fish that build nests on the bare bottom have been replaced by those that lay their eggs on the Chara.
Pond D:
The pond is so filled with vegetation that there are no longer any large areas of open water. Instead, the pond is filled with grasses. The water dries up during the summer months.
Some mussels require a sandy bottom in order to maintain an upright position. In which pond will they
die out?
A) Pond A
B) Pond B
C) Pond C
D) Pond D
Answers: 3
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Pond A:
Cattails, bulrushes, and water lilies grow in the pond. These plants have their roots...
Cattails, bulrushes, and water lilies grow in the pond. These plants have their roots...
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