Food Chain, Food Web and Ecological Pyramid

Front

What is the primary source of energy in an ecosystem?

Back

The primary source of energy in an ecosystem is the sun, which is harnessed by producers through photosynthesis.

Front

Define producers in the context of a food chain.

Back

Producers are organisms, typically plants, that create their own food through photosynthesis and form the base of the food chain.

Front

What role do consumers play in a food chain?

Back

Consumers are organisms that eat other organisms for energy. They can be classified as primary, secondary, or tertiary consumers based on their position in the food chain.

Front

What is a food web?

Back

A food web is a complex network of interconnected food chains in an ecosystem, illustrating how energy and nutrients flow between different organisms.

Front

Explain the concept of trophic levels.

Back

Trophic levels represent the hierarchical levels in an ecosystem, where each level consists of organisms that share the same function in the food chain.

Front

What is the energy transfer efficiency between trophic levels?

Back

Typically, only about 10% of the energy is transferred from one trophic level to the next, with the rest lost as heat.

Front

Identify the three main types of consumers in a food chain.

Back

The three main types of consumers are primary consumers (herbivores), secondary consumers (carnivores that eat herbivores), and tertiary consumers (carnivores that eat other carnivores).

Front

What is a tertiary consumer?

Back

A tertiary consumer is an organism that occupies the third trophic level in a food chain, feeding on secondary consumers.

Front

How do decomposers fit into the food chain?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and completing the nutrient cycle in an ecosystem.

Front

What is the significance of the 10% rule in ecology?

Back

The 10% rule indicates that only about 10% of the energy from one trophic level is available to the next level, which limits the number of trophic levels in an ecosystem.