Ecosystem

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What is the primary source of energy in a grazing food chain?

Photosynthesis (correct)

Detritivores

Dead organic matter

Decomposers

In which type of ecosystem is the detritus food chain a major conduit of energy flow?

Forest ecosystem

Aquatic ecosystem (correct)

Terrestrial ecosystem

Desert ecosystem

What happens to energy as it flows through trophic levels in a food chain?

Energy remains constant at each trophic level

Energy is only lost at the first trophic level

Energy is lost at each trophic level (correct)

Energy is gained at each trophic level

Which of the following organisms is an example of a detritivore?

Earthworm (D) Signup and view all the answers

In which type of ecosystem does a larger fraction of energy flow through the detritus food chain?

Terrestrial ecosystem (C) Signup and view all the answers

What is the primary characteristic of a grazing food chain?

Energy is gained from photosynthesis (A) Signup and view all the answers

What is the term used to describe each level in a food chain where energy transfer takes place?

Trophic level (A) Signup and view all the answers

Which organisms depend on the organisms at the lower trophic level for their energy demands?

Organisms of a trophic level (C) Signup and view all the answers

What is the term used to describe the total biomass of producers in a unit area?

Standing crop (B) Signup and view all the answers

What is the difference between fresh weight and dry weight in biomass measurement?

Fresh weight is measured immediately after harvesting, while dry weight is measured after drying (C) Signup and view all the answers

What is the term used to describe the amount of living matter present in different trophic levels at a given time?

Standing crop (A) Signup and view all the answers

What is the direction of energy flow in a food chain?

From producers to top carnivores (A) Signup and view all the answers

What happens to the energy when an organism dies and is not consumed by another animal?

It is lost as heat during decomposition (A) Signup and view all the answers

What is the role of decomposers in an ecosystem?

They degrade dead organic matter into simple, inorganic materials (B) Signup and view all the answers

What is the result of an animal being eaten by different animals in a food web?

Different food chains get interconnected (D) Signup and view all the answers

What is the term for the process of decomposers breaking down dead organic matter?

Saprotrophy (C) Signup and view all the answers

What is the main difference between a food chain and a food web?

A food web is more real than a food chain (B) Signup and view all the answers

What is the role of earthworms in the detritus food chain?

They feed on dead organic matter and further decompose detritus (B) Signup and view all the answers

In a detritus food chain, what is the primary source of energy?

Dead organic matter (B) Signup and view all the answers

In which trophic level do producers occupy in a food chain?

1st trophic level (D) Signup and view all the answers

What is the primary difference between a grazing food chain and a detritus food chain?

The source of energy (D) Signup and view all the answers

In a terrestrial ecosystem, which type of food chain is a major conduit of energy flow?

Detritus food chain (D) Signup and view all the answers

What happens to energy as it flows through trophic levels in a detritus food chain?

It is lost at each trophic level (D) Signup and view all the answers

What is the significance of the 1st trophic level in a food chain?

It is the level where producers occupy (D) Signup and view all the answers

What is the fate of the biomass of plants that die without being consumed by animals?

It is degraded by decomposers and released as heat. (A) Signup and view all the answers

What is the primary source of energy for organisms at the 2nd trophic level?

Producers at the 1st trophic level (A) Signup and view all the answers

What is the role of earthworms in the detritus food chain?

They are detritivores that feed on bacteria and fungi. (C) Signup and view all the answers

What is the characteristic of energy flow in a food chain?

Energy is lost as heat at each trophic level. (C) Signup and view all the answers

In which type of ecosystem would you expect to find a higher standing crop of producers?

Ecosystem with a high rate of primary production (C) Signup and view all the answers

What is the difference between a food chain and a food web?

A food chain is a linear sequence of organisms, while a food web is a network of interconnected food chains. (C) Signup and view all the answers

What is the main consequence of energy transfer between trophic levels?

A slight decrease in energy available to higher trophic levels (C) Signup and view all the answers

Which type of food chain is characterized by the presence of decomposers?

Detritus food chain (C) Signup and view all the answers

What is the result of the interconnection of multiple food chains?

The formation of a complex network of food chains, known as a food web. (B) Signup and view all the answers

What is the role of decomposers in the ecosystem?

They are organisms that break down dead organic matter and release nutrients. (C) Signup and view all the answers

What is the primary function of top carnivores in a food chain?

To regulate the population of herbivores (A) Signup and view all the answers

What is the main difference between the biomass of producers expressed in fresh weight and dry weight?

Fresh weight includes water content, while dry weight does not (D) Signup and view all the answers

Ecosystem

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Questions and Answers

What is the primary source of energy in a grazing food chain?

In which type of ecosystem is the detritus food chain a major conduit of energy flow?

What happens to energy as it flows through trophic levels in a food chain?

Which of the following organisms is an example of a detritivore?

In which type of ecosystem does a larger fraction of energy flow through the detritus food chain?

What is the primary characteristic of a grazing food chain?

What is the term used to describe each level in a food chain where energy transfer takes place?

Which organisms depend on the organisms at the lower trophic level for their energy demands?

What is the term used to describe the total biomass of producers in a unit area?

What is the difference between fresh weight and dry weight in biomass measurement?

What is the term used to describe the amount of living matter present in different trophic levels at a given time?

What is the direction of energy flow in a food chain?

What happens to the energy when an organism dies and is not consumed by another animal?

What is the role of decomposers in an ecosystem?

What is the result of an animal being eaten by different animals in a food web?

What is the term for the process of decomposers breaking down dead organic matter?

What is the main difference between a food chain and a food web?

What is the role of earthworms in the detritus food chain?

In a detritus food chain, what is the primary source of energy?

In which trophic level do producers occupy in a food chain?

What is the primary difference between a grazing food chain and a detritus food chain?

In a terrestrial ecosystem, which type of food chain is a major conduit of energy flow?

What happens to energy as it flows through trophic levels in a detritus food chain?

What is the significance of the 1st trophic level in a food chain?

What is the fate of the biomass of plants that die without being consumed by animals?

What is the primary source of energy for organisms at the 2nd trophic level?

What is the role of earthworms in the detritus food chain?

What is the characteristic of energy flow in a food chain?

In which type of ecosystem would you expect to find a higher standing crop of producers?

What is the difference between a food chain and a food web?

What is the main consequence of energy transfer between trophic levels?

Which type of food chain is characterized by the presence of decomposers?

What is the result of the interconnection of multiple food chains?

What is the role of decomposers in the ecosystem?

What is the primary function of top carnivores in a food chain?

What is the main difference between the biomass of producers expressed in fresh weight and dry weight?

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