Q1.8. Based on the graphs in Question 6, shown again below, which of the followi

Question

Q1.8. Based on the graphs in Question 6, shown again below, which of the following is the most reasonable prediction? BEFORE no minnows AFTER (with minnows) Zooplankton 2 Zooplankton 2 Zooplankton 1 Zooplankton 1 Algae 2 Algae 2 Algae 1 Algae 1 0 50 100 150 200 250 0 50 100 150 200 250 Population Size Population Size Placed in equal numbers in an experimental lake with food but no predators, zooplankton 2 will outcompete zooplankton 1 Placed in an experimental tank with a choice between algae 1 and algae 2, zooplankton 1 feeds preferentially on algae 1 Placed in an experimental tank with a choice between algae 1 and algae 2, zooplankton 1 feeds preferentially on algae 2 All of the predictions above are likely to occur. Submit

Explanation / Answer

Option c is correct because in the absence of predator in first graph the number of zooplankton 1 is high and number of algae 2 is low it means zooplankton 1 feed on algae 2. When we add predators which feed on zooplankton so number of zooplankton 1 decreases and algae 2 increase because there is no one to feed on algae 2.

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