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Direction: Read the passage and answer the question

 

Title: "The Complexity of Ecosystem Dynamics"

 

Ecosystems are intricate networks of living organisms and their physical environments, functioning as a single, dynamic unit. They encompass a wide array of species, from microscopic bacteria to towering trees, all interdependent for survival. Understanding the complexity of ecosystem dynamics is crucial for preserving biodiversity and maintaining ecological balance.

 

One fundamental concept in ecology is the trophic pyramid, which illustrates the flow of energy through an ecosystem. Producers, such as plants, harness sunlight to produce energy-rich organic molecules through photosynthesis. These molecules are consumed by primary consumers, such as herbivores, which are then preyed upon by secondary consumers, such as carnivores. Each level of the trophic pyramid represents a transfer of energy, with energy decreasing as it moves up the pyramid.

 

Biodiversity, the variety of life forms within an ecosystem, is another critical aspect. High biodiversity promotes stability and resilience in ecosystems. It ensures that various species can compensate for fluctuations in populations, helping to maintain overall equilibrium.

 

Additionally, ecological succession is a dynamic process of change in an ecosystem's structure and composition over time. It occurs in response to disturbances, such as fires or natural events, leading to the replacement of species and alterations in the ecosystem's structure. Understanding succession patterns aids in predicting how ecosystems will respond to environmental changes.

 

Question: 

Which statement accurately describes the flow of energy in a trophic pyramid?

Option: 1

Energy increases as it moves up the pyramid.

 


Option: 2

Energy is primarily lost as heat at each trophic level.


Option: 3

Producers receive energy from secondary consumers.


Option: 4

Secondary consumers produce energy-rich molecules.

 


Answers (1)

best_answer

The passage explains that energy decreases as it moves up the trophic pyramid, with much of it being lost as heat at each level.

Posted by

seema garhwal

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