GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Shows the feeding relationship only between animals.
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Shows the feeding relationship in an ecosystem.
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Shows the feeding relationship only between plants.
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None of the above
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Detailed explanation-1: -A food chain represents only a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
Detailed explanation-2: -Consumers may be identified by their position in a chain: first order (primary) consumers eat producers; second order (secondary) consumers eat primary consumers; third order (tertiary) consumers eat secondary, and so on along a chain. Consumers high in a food chain do not necessarily eat all species lower down.
Detailed explanation-3: -Food web is an important conceptual tool for illustrating the feeding relationships among species within a community, revealing species interactions and community structure, and understanding the dynamics of energy transfer in an ecosystem.
Detailed explanation-4: -A food chain describes how energy and nutrients move through an ecosystem. At the basic level there are plants that produce the energy, then it moves up to higher-level organisms like herbivores. After that when carnivores eat the herbivores, energy is transferred from one to the other.
Detailed explanation-5: -Food chains and food webs represent the feeding relationships in ecosystems. They show who eats whom. Therefore, they model the flow of energy and materials through ecosystems.