How does bats catch their prey?

Q. Bats can produce and hear infrasonic sound.

Q.

To detect the obstacles in their path, bats produce :

(a) infrasonic waves (b) ultrasonic waves

(c) electromagnetic waves (d) radio waves.

Q. How are bats able to fly in the dark?

Q. To detect the obstacles in the path, bats produce ultrasonic sound waves.

Q.

Complete the following sentences :

(a) An average person can hear sound of frequencies in the range ___ to ___.

(b) Ultrasound is of frequency ___ .

(c) Infrasonic sound is of frequency ___ .

(d) Bats can produce and hear ___ sound.

(e) Elephants produce ___ sound.