12.2 Sense Organs

Your nose helps you:

• Smell, sneeze, and hear

• Smell, see, and feel

• Smell, taste, and breathe

• Smell, smile, and eat

Answer explanation

The correct answer is 'Smell, taste, and breathe' because the nose is primarily responsible for the sense of smell, plays a role in taste, and is essential for breathing. The other options include functions not associated with the nose.

Made out of thin pieces of bone, this wall separates your nasal passages

• Nostrils

• Cartilage

• Bridge

• Septum

Answer explanation

The septum is the wall made of thin bone and cartilage that separates the nasal passages. It is distinct from the nostrils, cartilage, and bridge, making it the correct answer.

With which organ does tongue work to get tasting?

• Eyes

• Ears

• Skin

• Nose

Answer explanation

The tongue detects taste, but the sense of smell, facilitated by the nose, significantly enhances flavor perception. Together, they create the full experience of tasting.

Eye ball is located in____

• Eye jacket

• Eye socket

• Skull

• All the above

Answer explanation

The eye ball is located in the eye socket, which is a bony cavity in the skull that holds the eye. While the skull encompasses the eye socket, the most specific answer is the eye socket.

Your eyes are being protected by_____.

• Eye lashes

• Eye brows

• Eye lids

• All the above

Answer explanation

Your eyes are protected by eyelashes, eyebrows, and eyelids, which all serve to shield them from debris, moisture, and light. Therefore, the correct answer is 'All the above'.

Outermost layer that covers eye__.

• Sclera

• Chorion

• Retina

• All the above

Answer explanation

The sclera is the outermost layer of the eye, providing structure and protection. The chorion and retina are not outer layers; the chorion is part of the vascular layer, and the retina is the inner layer responsible for vision.

Cornea is____.

• Opaque layer that covers eye in outermost region

• Transperent layer that cover front part of eye

• Black coloured layer that supply blood to eye

• All the above

Answer explanation

The cornea is a transparent layer that covers the front part of the eye, allowing light to enter. The other options incorrectly describe its properties, making the second choice the correct answer.

Pupil dialates according to the ________.

• Size of object

• Intensity of light

• Both

• None

Answer explanation

The pupil dilates primarily in response to the intensity of light. In bright light, it constricts to limit the amount of light entering the eye, while in dim light, it dilates to allow more light in for better vision.

Part of eye useful for identification of human beings__

• Pupil

• Iris

• Lens

• Cornea

Answer explanation

The iris is the colored part of the eye and is unique to each individual, making it useful for identification. The pupil, lens, and cornea do not have the same distinctive characteristics as the iris.

The ear functions for ___________.

• balance

• hearing

• both balance and hearing

Answer explanation

The ear is responsible for both balance and hearing. The inner ear contains structures that help maintain balance, while the cochlea is essential for hearing. Therefore, the correct answer is both balance and hearing.