Biology
Assertion. The tube/canal which transmits the air currents from the pinna to tympanum is termed as eustachian tube.
Reason. The eustachian tube equalizes the air pressure on either side of the ear drum allowing it to vibrate freely.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Sense Organs
4 Likes
Answer
A is False and R is True
Explanation
Eustachian tube connects the cavity of the middle ear with the throat.
Answered By
2 Likes
Related Questions
Assertion. Myopia is caused due to the shortening of the eyeball from front to back.
Reason. Myopia can be corrected by using suitable convex (converging) lens and the power of the glasses used is mentioned in plus "+".
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion. Semi-circular canals are present in the middle ear and they contain sensory cells responsible for the static balance of the body.
Reason. One end of each of the three semi-circular canals is widened to form an ampulla which contains the sensory cells for dynamic balance.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion. The human ear is responsible for hearing, dynamic equilibrium and also static balance.
Reason. Cochlea, semi-circular canals and vestibule (utriculus and sacculus) are responsible for hearing, dynamic balance and static balance respectively.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion. Hormones are the secretions from some glandular parts of the body which regulate certain physiological processes by chemical means.
Reason. Hormones are directly poured into the target organs which are usually very close to the source/gland secreting the hormones.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.