Read the Following Scenario, and Answer the Questions Below

question 28

Essay

Read the following scenario, and answer the questions below.

THE EXPERIMENT:
Researchers wanted to determine whether pesticide Z is effective at killing grasshoppers that typically invade cornfields. Two 10- acre cornfields located 1 mile apart were chosen. The cornfield to the west was sprayed only with water. The cornfield on the east received the same amount of water with a 10% solution of pesticide Z. The number of grasshoppers in the fields was recorded every week for 10 weeks.

RESULTS:
The number of grasshoppers in the west field treated only with water doubled after 10 weeks.
The number of grasshoppers in the east field treated with pesticide Z declined by 50% after 10 weeks.

-Researchers wanted to determine whether pesticide Z is effective at killing grasshoppers that typically invade cornfields.Two 10- acre cornfields located 1 mile apart were chosen.The cornfield to the west was sprayed only with water.The cornfield on the east received the same amount of water with a 10% solution of pesticide Z.The number of grasshoppers in the fields was recorded every week for 10 weeks.The number of grasshoppers in the west field treated only with water doubled after 10 weeks.The number of grasshoppers in the east field treated with pesticide Z declined by 50% after 10 weeks.Discuss two problems with the design of this experiment,and propose solutions to these problems.

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Definitions:

Totipotent

Cells that have the potential to differentiate into any type of cell in an organism, including the placental cells.

Differentiated

A state in which cells have developed specialized functions and characteristics, differing from their originating stem cells.

Amnion

A thin, protective membrane that surrounds the embryo or fetus in the amniotic sac, containing the amniotic fluid.

Embryonic Membrane

Membranes such as the amnion and chorion that develop during embryogenesis to protect and nourish the embryo.