The diagram above is an illustration of the growth of a plant in a water culture. After a few days, the solution turned green and the plant died. Use this t...

Assessment: WAEC SSCE - Biology - 2021 (Objective) Subject: Biology

Question 1 Report


The diagram above is an illustration of the growth of a plant in a water culture. After a few days, the solution turned green and the plant died. Use this to answer this question.

The death of the plant was likely caused by?

Answer Details
The diagram shows the growth of a plant in a water culture, and it is noted that after a few days, the solution turned green and the plant died. This suggests that the cause of death of the plant is related to the green color of the solution. The most likely explanation for the green color of the solution is that there was an overgrowth of algae in the water culture. Algae are simple, plant-like organisms that can grow rapidly in water with a high nutrient content, such as the solution used in the water culture. Algae can compete with plants for nutrients and sunlight, and their overgrowth can cause a reduction in the oxygen content of the water, which can be harmful to plants. Therefore, the death of the plant was likely caused by the excess supply of nutrients to the plant, which led to the overgrowth of algae in the solution. The algae then competed with the plant for nutrients and sunlight, which led to the plant's death.

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