Problem Analysis:
The image provided is a food web diagram showing the relationships between different organisms in an ecosystem. The task involves understanding the differences between a food chain and a food web, as well as identifying various components of the food chain and web (producers, consumers, apex predators, herbivores, and carnivores).
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Solution:
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1. State the main difference between a food chain and a food web.
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Food Chain: A food chain represents a linear sequence of organisms, starting from a producer (usually a plant) and ending with a top predator. It shows a single pathway of energy transfer.
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Food Web: A food web is a more complex network that includes multiple interconnected food chains. It illustrates how different organisms are connected through various feeding relationships, showing the complexity of energy flow in an ecosystem.
Answer:
The main difference is that a food chain shows a single linear pathway of energy transfer, while a food web shows multiple interconnected pathways, illustrating the complexity of feeding relationships in an ecosystem.
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2. In the food chain: Grasses → Grasshoppers → Birds → Foxes
a)
Name the producer:
- Producers are organisms that produce their own food through photosynthesis. In this food chain,
Grasses are the producers.
b)
Name the primary consumer:
- Primary consumers are organisms that feed directly on producers. In this food chain,
Grasshoppers are the primary consumers.
c)
Name the secondary consumer:
- Secondary consumers are organisms that feed on primary consumers. In this food chain,
Birds are the secondary consumers.
d)
Name the tertiary consumer:
- Tertiary consumers are organisms that feed on secondary consumers. In this food chain,
Foxes are the tertiary consumers.
Answers:
a) Producer:
Grasses
b) Primary consumer:
Grasshoppers
c) Secondary consumer:
Birds
d) Tertiary consumer:
Foxes
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3. Name an apex predator in the food chain.
- An apex predator is at the top of the food chain and has no natural predators. In the given food chain (Grasses → Grasshoppers → Birds → Foxes),
Foxes are the apex predators because they are not preyed upon by any other organism in this chain.
Answer:
Apex predator:
Foxes
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4. Name three herbivores in the food web.
- Herbivores are organisms that feed on plants (producers). From the food web diagram:
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Rabbits eat
Carrots.
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Mice eat
Grasses.
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Grasshoppers eat
Grasses.
Answer:
Three herbivores:
Rabbits, Mice, Grasshoppers
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5. Name three carnivores in the food web.
- Carnivores are organisms that feed on other animals. From the food web diagram:
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Foxes eat
Rabbits and
Mice.
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Owls eat
Mice and
Birds.
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Birds eat
Grasshoppers.
Answer:
Three carnivores:
Foxes, Owls, Birds
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Final Answers:
1.
Difference: A food chain shows a single linear pathway, while a food web shows multiple interconnected pathways.
2. a) Producer:
Grasses
b) Primary consumer:
Grasshoppers
c) Secondary consumer:
Birds
d) Tertiary consumer:
Foxes
3. Apex predator:
Foxes
4. Three herbivores:
Rabbits, Mice, Grasshoppers
5. Three carnivores:
Foxes, Owls, Birds
Boxed Final Answer:
\[
\boxed{
\begin{array}{l}
1. \text{A food chain shows a single linear pathway, while a food web shows multiple interconnected pathways.} \\
2. \text{a) Grasses, b) Grasshoppers, c) Birds, d) Foxes} \\
3. \text{Foxes} \\
4. \text{Rabbits, Mice, Grasshoppers} \\
5. \text{Foxes, Owls, Birds}
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of food web worksheet answer key.
