Consider the following:1. Butterflies2. Fish3. FrogsHow many of the above have poisonous species among them?
✓ Correct answer: c) All three
ExplanationButterflies: Hybrid Heliconius butterflies are poison- ous in nature.In nature, these butterflies are rare.Heliconius melpomene and Heliconius cydno are both highly poisonous, having evolved to produce their own cyanide, and predators have learned exactly what both of these toxic insects look like.Fish: “Venomous” fish are those that can inject their toxic venom into victims, whereas “poisonous” fish are those that cause toxic symptoms only if they are eaten.For example: Lionfish, red-bel- lied piranha etc. Frogs: Frogs are amphibians which can survive both on land and water.Some of them can be poisonous also.Poison dart frogs are small, brightly colored amphibians that live on tropical rainforest floors across Central and South America.Poison dart frogs are named for the toxins they secrete from their skin, which have tra- ditionally been used to tips of hunters' weapons.For example, the Embera and Noanama Indigenous people in western Colombia have used the skin of golden poison frogs (Phyllobates terribilis) to tip blowgun darts for hundreds of years.196
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