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Answer:
The food chain showing seven organisms can be drawn as follows:
Plants → grasshoppers → mice → frog → snakes→ eagles → decomposers
The plants are the primary source of food in a food chain or a food web. The animals which feed on plants will be termed as herbivores or primary consumers like the grasshopper. The organisms feeding on primary consumers will be the secondary consumers like mice.
An energy pyramid for three of the organisms can be shown as follows:
mice (10 kilocalories)
↑
Grasshoppers (100 kilocalories)
↑
Plants ( 1000 kilocalories)
As the energy pyramid shows, only about 10% of the energy travels from one trophic level to another.
The food chain is defined as the relationship of organisms in an ecological area. The food chain comprises several trophic levels, in which organisms are categorized at different levels.
The food chain for the grasslands is given as:
Plants - insects - lizard or mouse - snakes - hawks - decomposers
- The plants are the autotrophs that prepare their food and occupy the first trophic level as producers.
- The insects are the herbivorous animals or insects that are termed as primary consumers in the second trophic level, followed by secondary, tertiary, and quaternary consumers. The last three trophic level consumers are carnivores.
The energy pyramid of the organism is given in the attachment below.
The energy flow in the food chain follows the 10% law, which means that only 10% of the energy is transferred at each trophic level and the rest is lost as heat.
To know more about the food chain, refer to the following link:
https://brainly.com/question/850820
