Distinguish between (a) Grazing food chain and detritus food chain

Question

Distinguish between (a) Grazing food chain and detritus food chain

Distinguish between
(a) Grazing food chain and detritus food chain
(b) Production and decomposition
(c) Upright and inverted pyramid
(d) Food chain and Food web
(e) Litter and detritus
(f) Primary and secondary productivity

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Salim Ahmed Kawsar · Answer 1 · Feb 05, 2023 15:29:48

(a) Grazing food chain and detritus food chain

Grazing food chain

Detritus food chain

In this food chain, energy is derived from the Sun.

In this food chain, energy comes from organic matter (or detritus) generated in trophic levels of the grazing food chain

It begins with producers, present at the first trophic level. The plant biomass is then eaten by herbivores, which in turn are consumed by a variety of carnivores.

It begins with detritus such as dead bodies of animals or fallen leaves, which are then eaten by decomposers or detritivores. These detritivores are in turn consumed by their predators.

This food chain is usually large

It is usually smaller as compared to the grazing food chain.

(b) Production and decomposition

Production	Decomposition
It is the rate of producing organic matter (food) by producers	It is the process of breaking down of complex organic matter or biomass from the body of dead plants and animals with the help of decomposers into organic raw material such as CO₂, H₂O, and other nutrients
It depends on the photosynthetic capacity of the producers	It occurs with the help of decomposers.
Sunlight is required by plants for primary production	Sunlight is not required for decomposition by decomposers

(c) Upright and inverted pyramid

Upright pyramid	Inverted pyramid
The pyramid of energy is always upright.	The pyramid of biomass and the pyramid of numbers can be inverted
In the upright pyramid, the number and biomass of organisms in the producer level of an ecosystem is the highest, which keeps on decreasing at each trophic level in a food chain	In an inverted pyramid, the number and biomass of organisms in the producer level of an ecosystem is the lowest, which keeps on increasing at each tropic level.

d) Food chain and Food we

Food chain	Food web
It is a single linear sequence of organisms	It contains a number of interconnected food chains
Members present at higher trophic levels feed on single types of organisms	One organism has alternate food sources

(e) Litter and detritu

Litter	Detritus
Litter contains all kinds of wastes generated above the ground.	Detritus is composed of the remains of dead plants and animals
Litter contains both biodegradable and non-biodegradable matter.	Detritus contains only biodegradable matter.

f) Primary and secondary productivity

Primary productivity	Secondary productivity
It is defined as the amount of organic matter produced by producers per unit area over a period of time.	It is defined as the rate of production of organic matter by consumers over a period of time

Salim Ahmed Kawsar · Answer 2 · Feb 05, 2023 15:29:48

(a) Grazing food chain and detritus food chain

Grazing food chain

Detritus food chain

In this food chain, energy is derived from the Sun.

In this food chain, energy comes from organic matter (or detritus) generated in trophic levels of the grazing food chain

It begins with producers, present at the first trophic level. The plant biomass is then eaten by herbivores, which in turn are consumed by a variety of carnivores.

It begins with detritus such as dead bodies of animals or fallen leaves, which are then eaten by decomposers or detritivores. These detritivores are in turn consumed by their predators.

This food chain is usually large

It is usually smaller as compared to the grazing food chain.

(b) Production and decomposition

Production	Decomposition
It is the rate of producing organic matter (food) by producers	It is the process of breaking down of complex organic matter or biomass from the body of dead plants and animals with the help of decomposers into organic raw material such as CO₂, H₂O, and other nutrients
It depends on the photosynthetic capacity of the producers	It occurs with the help of decomposers.
Sunlight is required by plants for primary production	Sunlight is not required for decomposition by decomposers

(c) Upright and inverted pyramid

Upright pyramid	Inverted pyramid
The pyramid of energy is always upright.	The pyramid of biomass and the pyramid of numbers can be inverted
In the upright pyramid, the number and biomass of organisms in the producer level of an ecosystem is the highest, which keeps on decreasing at each trophic level in a food chain	In an inverted pyramid, the number and biomass of organisms in the producer level of an ecosystem is the lowest, which keeps on increasing at each tropic level.

d) Food chain and Food we

Food chain	Food web
It is a single linear sequence of organisms	It contains a number of interconnected food chains
Members present at higher trophic levels feed on single types of organisms	One organism has alternate food sources

(e) Litter and detritu

Litter	Detritus
Litter contains all kinds of wastes generated above the ground.	Detritus is composed of the remains of dead plants and animals
Litter contains both biodegradable and non-biodegradable matter.	Detritus contains only biodegradable matter.

f) Primary and secondary productivity

Primary productivity	Secondary productivity
It is defined as the amount of organic matter produced by producers per unit area over a period of time.	It is defined as the rate of production of organic matter by consumers over a period of time

Distinguish between (a) Grazing food chain and detritus food chain

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