Respuesta :
The illustration is missing the type of organisms known as decomposers. They break down dead animals and plants and have the vital role in returning the nutrients back into the system, where they can be used once more by the primary producers.
In the illustration:
The primary producers are the phytoplankton.
The primary consumers are the: krill, cod and zooplankton
The secondary consumers are the remaining species that feed on the primary consumers.
Decomposers is missing in the food web illustration.
What is a food web?
A food web is a connection of food chains this is because some animals feed on more than one type of food.
The food chain shows the pattern of transfer of energy from one organism to another as they feed.
In a food chain or web we have;
- Decomposers: They are organisms that helps in the breakdown of dead organism into nutrients that can be used by primary producers.
- Primary producer are mostly photosynthetic organisms, they serves as food for primary consumers examples are plants, phytoplankton
- Primary consumer are herbivores animals that feeds directly on primary producers examples are Zooplankton, shrimps, krills, grasshopper
- Secondary Consumer are animals that feeds on flesh and sometimes flesh and plants. This animals feeds on primary consumers examples are Whale, Seal, Lion.
This four energy can all be present in a food web.
Therefore, Decomposers is absent in Marine food web as phytoplankton have the ability to produce food for themselves because of the presence of Chlorophyll.
For more information on food web kindly check
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