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 dragonfly Fish Aquatic habitat Terrestrial habitat A. The direct interaction between pollinator and plants leads to what, if any, change in plant density B. The indirect interaction between fish and plants leads to what, if any, change in plant density C. What is this specific type of effect called?

Explanation / Answer

A. The direct interaction between pollinators and plants often facilitate invasion of non-native plants. Those plants which share pollinators are found in clusters whereas plants that use different pollinators , their communities are more divergent.

B. The indirect interaction between fish and plants leads to lower seed production as the pollinators visi is less in such area cause fish feed on the larva of dragonflies, resulting in lesser no. Of dragon flies , which are food to the pollinators.

C. This specific type of effect is called food web, which help us understand the dynamics of energy change in ecosystem.

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