托福口语 Task 4

Today we're going to talk about a fascinating concept in animal behavior known as 'sensory adaptation.' This is the process by which animals adjust their senses to better survive in their specific environments. One key aspect of this is how some animals have evolved to perceive stimuli that are completely invisible to humans. Take the rattlesnake, for example. Rattlesnakes have specialized organs called pit organs, which can detect infrared radiation—essentially heat. This allows them to 'see' the body heat of their prey, like mice, even in complete darkness. This is crucial because they hunt at night when vision is useless. Another example is the honeybee. Honeybees can see ultraviolet light, which humans cannot. Flowers often have ultraviolet patterns that guide bees to their nectar. These patterns are invisible to us, but to the bee, they're like landing strips. So, through these examples, we see that sensory adaptation isn't just about improving existing senses, but about developing entirely new ways to perceive the world, tailored to each animal's ecological niche.