Question 4. The figure below represents the interaction web of fish, insects, an

Question

Question 4. The figure below represents the interaction web of fish, insects, and plants in an ecosystem. Solid lines denote direct interactions, whereas dotted lines denote indirect interactions; the direction of the arrow shows the direction of the interaction; and the sign (+/0/-) denotes the effect of the interaction: Pollinator Dragonfly Fish Terrestrial habitat A. The direct interaction between fish and larval dragonfly leads to what, if any, change in larval dragonfly density (i.e., increase, decrease, no change, cannot be determined)? B. The indirect interaction between fish and dragonfly leads to what, if any, change in dragonfly density

Explanation / Answer

A) Fish feeds on larval dragon flies and thus reduce the density of the larval dragon flies.

B) The indirect interaction between fish and adult dragon flies is because of the direct interaction between fish and larval dragon flies. This leads to a decrease in the density of adult dragon flies .

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