Which of these parts of the mammalian ears is directly concerned with the sense of balance?
Cochlea
Eustachian tube
Ear-drum
Pinna
Semicircular canals
Correct answer is E
The inner ear of mammals consists of the cochlea, which is involved with the sense of hearing, and the vestibule and three semicircular canals, which are involved with the sense of balance.
A fundamental similarity between nervous and hormonal system is that both
involve chemical transmission
have widespread effects
shed chemicals into the blood stream
evoke rapid responses
Correct answer is D
No explanation has been provided for this answer.
the addition of saccharin
the addition of sugar
the addition of whisky or local gin
some complex hydrolytic reaction
anaerobic respiration of an organism
Correct answer is E
No explanation has been provided for this answer.
Fruit enlargement can be induced by spraying young ovary with
cytokinin, abscisic acid, and ethylene
gibberellin, ethylene, and abscisic acid
auxin, abscisic acid, and ethylene
auxin, cytokinin, and gibberellin
Correct answer is D
No explanation has been provided for this answer.
Treatment of a poor soil with lime supplies
Sulphur
Calcium
Phosphorus
Sodium
Nitrogen
Correct answer is B
Treating the soil with lime is to improve the calcium content of the soil. It provides a source of calcium and magnesium for plants.