Tag: zoology

Questions Related to zoology

Our ear can hear the frequency of sound waves

  1. 20 to 20,000 cycles / sec

  2. 1000 to 2000 cycles / sec

  3. 5000 to 7000 cycles / sec

  4. 5000 to 10,000 cycles / sec

Correct Option: A

Hearing range describes the range of sound wave frequencies, that can be heard by humans or other animals. Human audible range is commonly 20 to 20,000 Hz. 

Otorhinolaryngology is the study of 

  1. Brain cells

  2. Bird anatomy

  3. Locomotary organs

  4. Ear, nose and throat (ENT)

Correct Option: D

Otorhinolaryngology is also called as otolaryngology. It is the area of medicine that deals with conditions of the ear, nose, and throat (ENT) region. 

In the human ear, in utriculus and calculus, there are
calcareous particles called catatonia, which respond to

  1. Change of posture

  2. Internal pressure

  3. Hearing

  4. Sense of smell

Correct Option: A

Otoconia helps in balancing the body, during the change of posture when the  body is imbalanced and tilted onto one side the otoconia touch the steroidal and bend it causing the generation of nerve impulse.

A person going upto 10,000 feet height in a hot air balloon may develop severe pain in the ear due to

  1. Blocked eustachian tube

  2. Rupture of fenestra rotunda

  3. Endolymph getting into semicircular canals

  4. Fear of great height

Correct Option: B

The middle ear and internal ear of mammals are enclosed in which of the following bones __________________.

  1. Tympanic bulla and periotic bone (Temporal bone)

  2. Ethmoid

  3. Tympanic bulla

  4. Mastoid

Correct Option: A

The auditory bulla (pl. bullae) is a hollow bony structure on the ventral, posterior portion of the skull that encloses parts of the middle and inner ear. In most species, it is formed by the tympanic part of the temporal bone.

Otoconium is found in

  1. Perilymph

  2. Haemolymph

  3. Synovial fluid

  4. Otolithic membrane

Correct Option: D

An otolith also called as statoconium or otoconium, is a structure in the saccule or utricle of the inner ear, in the vestibular labyrinth of vertebrates. Statoconia (also called as otoconia) are numerous grains, often spherical in shape, between 1 and 50 m. Statoconia are also sometimes termed a statocyst. 

Rats can perceive sound waves of frequency from ........... KHz.

  1. 20 - 30

  2. 150

  3. 1000

  4. 20 - 90

Correct Option: D

The hearing is a mechanism which requires a sound under a particular range of frequency. It is known as the audible range. Ultrasonic sound is the sound of higher frequency and infrasonic are the sound of lower frequency as compared to normal audible range. Rats hearing frequency can be as low as 20 kHz to as high as 90kHz.

So, the correct answer is option D.

Our ears are most sensitive to sound of.

  1. $16$ cycles/sec

  2. $2000$ cycles/sec

  3. $1000$ cycles/sec

  4. $500$ cycles/sec

Correct Option: A

Echolocation is a characteristic of

  1. Insects

  2. Birds

  3. Bats

  4. Monkeys

  5. Rats

Correct Option: C

The sound travels through the air as a wave and the energy of this wave bounces off any object it comes across. A bat emits a sound wave and listens carefully to the echoes that return to it. The bat's brain processes the returning information. By determining how long it takes a noise to return, the bat's brain figures out how far away an object is. The bat can also determine where the object is, how big it is and in what direction it is moving.

Bat can travel with

  1. Eyes open

  2. Eyes plugged and ears open

  3. Ears plugged and eyes open

  4. Ears closed and eyes plugged

Correct Option: B

Biosonar or sonar system helps bats to detect distant objects by echolocation. These organisms emit high-pitched sounds that bounce off objects in its path and produce an echo back.  They respond rapidly to the echo and skillfully avoid obstacles and captures prey. Since they use only sonar system, not the vision, bats can travel with eyes plugged and ears open.