Tertiary Consumer – Definition, Functions and Examples Ans. Tertiary Consumer: Definition A tertiary consumer is an organism that occupies the third trophic level in a food chain or ecological pyramid and feeds on secondary consumers (carnivores or omnivores). They are typically apex predators or mesopredators, which means they have few or no predators of their own. These organisms play a critical role in maintaining ecological balance by controlling the population of lower-level consumers. Functions of Tertiary Consumers 1. Population Control: * Tertiary consumers regulate the population of secondary consumers and primary consumers, preventing overpopulation and depletion of resources. 2. Energy Transfer: * They play a key role in the transfer of energy within an ecosystem, representing the final step in the food chain before decomposers. 3. Ecosystem Stability: * By controlling species at lower trophic levels, they help maintain biodiversity and ecosystem stability. 4. Nutrient Recycling: * As part of the food chain, their remains and waste contribute to nutrient recycling through decomposers. Examples of Tertiary Consumers 1. In Terrestrial Ecosystems: * Lions: Predators that feed on secondary consumers like hyenas and herbivores. * Eagles: Feed on smaller carnivorous birds, reptiles, or mammals. * Wolves: Hunt secondary consumers such as deer or smaller carnivores. 2. In Aquatic Ecosystems: * Sharks: Feed on secondary consumers like smaller fish or seals. * Killer Whales: Apex predators feeding on large fish, seals, and penguins. * Tuna: Feed on smaller carnivorous fish like mackerel. 3. In Rainforests: * Jaguars: Feed on herbivores and secondary carnivores like monkeys and small cats. 4. In Grasslands: * Hawks: Prey on snakes, rodents, and other smaller predators. Characteristics of Tertiary Consumers * Diet: Predominantly carnivorous but can include omnivores. * Trophic Level: Occupy the third or fourth trophic level. * Position: Often at the top of the food chain (apex predators). * Adaptations: Sharp teeth, strong claws, and acute senses for hunting. Role in Food Webs Tertiary consumers are interconnected with multiple food chains and ensure balance by limiting the growth of populations below them. They indirectly support primary producers by preventing overgrazing or over-predation by lower trophic levels. - Study24x7
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Tertiary Consumer – Definition, Functions and Examples
Ans. Tertiary Consumer: Definition A tertiary consumer is an organism that occupies the third trophic level in a food chain or ecological pyramid and feeds on secondary consumers (carni...

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Class 10 Sciences
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