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Question

Given figure represents two food chains (X and Y) linked together to form a food web. Identify the types of food chains X and Y and the organism A that interconnects these food chains.
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A
X- Detritus food chain, Y- Grazing food chain, A- Bacterium
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B
X- Detritus food chain, Y-Grazing food chain, A- Detritivore
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C
X- Grazing food chain, Y-Detritus food chain, A- Detritivore
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D
X-Grazing food chain, Y-Detritus food chain, A- Grasshopper
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Solution

The correct option is D X- Grazing food chain, Y-Detritus food chain, A- Detritivore

  • In X, caterpillar feeds on leaves and is fed by an insectivorous bird.
  • Since the plant is living and is a producer in the chain X, the food chain X is a grazing food chain.
  • In the chain Y, the first food source is a dead decaying source which is degraded by A or a detritivore and is connected by a secondary and subsequently tertiary consumer.The chain Y is a Detritus food chain.

So, the correct option is 'X- Grazing food chain, Y-Detritus food chain, A- Detritivore'.


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