Question

How moths of certain families are able to escape captures from bats ? What is the
range of frequencies associated with (a) infra sound ? (b) ultrasound ?

Answer 1

Answer:

They have very sensitive hearing equipment, can hear the squeaks (ultrasound) of bat and know when a bat is flying nearby. (a) Less than 20 Hz. (b) More than 20,000 Hz.

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Answer 2

Answer:

The range of frequencies associated with infrasound is below the range of human hearing, typically below 20 Hz. Ultrasound, on the other hand, refers to sound frequencies above the range of human hearing, typically above 20 kHz. The exact range of frequencies associated with infrasound and ultrasound can vary depending on the species and the specific context. For example, some bats use echolocation frequencies that are in the ultrasound range, typically between 20 kHz and 200 kHz, to locate their prey.

Explanation:

Moths from certain families have evolved various mechanisms to escape captures from bats, which are their natural predators. One of the most common mechanisms is called "acoustic camouflage," where the moths generate ultrasonic sounds that interfere with the bat's echolocation system. This makes it difficult for the bat to detect the moth and track its movements, giving the moth a better chance of escaping. Some moths also have evolved wings that produce a faint rustling sound when flapping, which can also interfere with bat echolocation.

In addition to acoustic camouflage, some moths have evolved other defensive mechanisms, such as body shape and coloration that make them harder to detect, and the ability to produce noxious chemicals that repel predators.

The range of frequencies associated with infrasound is below the range of human hearing, typically below 20 Hz. Ultrasound, on the other hand, refers to sound frequencies above the range of human hearing, typically above 20 kHz. The exact range of frequencies associated with infrasound and ultrasound can vary depending on the species and the specific context. For example, some bats use echolocation frequencies that are in the ultrasound range, typically between 20 kHz and 200 kHz, to locate their prey.

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