Predator-Prey Dynamics and Defense Strategies — NEET Biology
📚 Practice ConceptIf a predator is too efficient and overexploits its prey, then the prey might become extinct and following it, the predator will also become extinct for lack of food. This is the reason why predators in nature are 'prudent'. Prey species have evolved various defenses to lessen the impact of predation. Some species of insects and frogs are cryptically-coloured (camouflaged) to avoid being detected easily by the predator. Some are poisonous and therefore avoided by the predators. The Monarch butterfly is highly distasteful to its predator (bird) because of a special chemical present in its body. Interestingly, the butterfly acquires this chemical during its caterpillar stage by feeding on a poisonous weed.
Which of the following statements correctly describe aspects of predation in ecological interactions? S1: Predators are important in maintaining species diversity within a community by mediating competition among various prey species. S2: The term "prudent predators" refers to their evolutionary tendency to overexploit prey populations to maximize their own fitness. S3: Many successful biological control programs in agriculture utilize predators to regulate the population densities of target pests. S4: In a broad ecological context, herbivores are generally classified separately from predators because they typically do not kill their food source directly. S5: The Monarch butterfly acquires its distasteful chemical during its adult stage by feeding on specific poisonous plants, deterring avian predators.
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