Question

18 (v) The diagram shows how energy from food is used by a wild beast. What
percentage of this energy is available to consumers and decomposers?
heat radiation
Bunts
breath
26 units
growth and
repair 4 unts
MM
urine
faedes
food 100 units
of energy
waste
materials
62 units
(b) 66
(a) 100
(c) 96
(d) 4​

Answer 1

Answer:

(b) 66

Explanation:

step by step explanation

Answer 2

The percentage of this energy available to consumers and decomposers is 96.

• The ecosystem works through various processes of organisms. These could be life functions such as growing, breathing, eating, etc. The balance of the ecosystem is maintained through the food chain.
• The food chain is carried from producers to consumers to decomposers.
• Animals are usually dependent on producers or other animals for food. Herbivores usually consume plants and Carnivores consume other animals. Decomposers consume the leftovers of animals or plants.
• Wild beasts are herbivores which means they depend on producers such as plants for food.  
• We need to identify the percentage of consumers and decomposers. Since carnivores seek and kill animals, the wild beast becomes prey. Through food, the energy in a food chain increases.
• Since food provides 100 units of energy which are also turned into various other processes.
• Growth and repair energy cannot be retained through consumption since every animal has their own set of functions to grow and repair.
• Other functions can be retained by the wild beast as well as similarly exist in other animals. The sum of the functions is ( 26 + 4 + 62 + 8 = 100)
• The energy available for consumers and decomposers ( 100 - 4 [ Growth and repair ] = 96 )

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