A group of students is trying to grow a kelp plant in a tank without any others animals. They use a temperature regulation system to keep the
water temperature at about 12°C. They bury the holdfast below the soil that has been enriched with nutrients and place the plant near a window
in direct sunlight. However, over a few weeks the kelp plant withers and dies. Why did this happen?
A.
The kelp draws nutrients from the water rather than the soil, which it does not have available.
X. B.
The water temperature is too low for the kelp plant to survive.
C Kelp cannot grow in direct sunlight and need to be kept in a shaded location.
D. Kelp only grows in freshwater, and salt water is harmful to kelp.
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