Give reasons for the following
Urine excreted during summer months is hypertonic.
During summer there is more loss of water in the form of sweat. Therefore to prevent excessive loss of water, less of water is excreted and thus the urine is hypertonic.
Give reasons for the following
A person has difficulty in focusing on nearer objects, as the age increases.
Give one difference between each of the following:
Glucocorticoids and Mineralocorticoids.
Give reasons for the following
Jamming of wooden doors and windows takes place during rainy season.
Give reasons for the following
A cut plant wilts fast even if its cut end is dipped in water.
Give reasons for the following:
Nerve impulse travels in one direction due to change in voltage difference during conduction and due to the secretion of acetylchloride at symaptic cleft.
