<span>b. Growth of a tumor
</span><span>The phenomenon of contact inhibition occurs when normal cells doesn's stop dividing when in collision with another cell which triggers cancerous cells.</span>
Answer:
Anti-diuretic hormone causes the kidneys to increases the permeability of the collecting ducts to water
.
Explanation:
The anti-diuretic hormones stimulates the process of water re-absorption by enhancing the water channels or aquaporins in the membranes of the kidney tubules. The solute free water are transferred through the channels in the tubular cells and back in the blood which then leads to decrease in the osmolarity of plasma with the increase in osmolarity of urine. The hormone is prepared in the hypothalamus of brain and stored in the pituitary glands. It reminds the kidney about the absorption of water, through which it maintains the balance of water in blood.
Answer and Explanation:
Most young roots have two main regions. An outer cortex and a central cylinder containing the vascular bundles.
The endodermis also referred to as starch sheath. Its cells have a casparian strip which is made up of an impervious waxy deposit on the radial and cross walls. It controls entry of water and dissolved salts into the vascular bundle.