Transportation in Plants and Animals Test - 1

From stomata, maximum loss of water through transpiration take place.Transpiration is essentially evaporation of water from plant leaves.

Phloem helps in the bidirectional translocation of minerals.It consists of: conducting cells, generally called sieve elements; parenchyma cells, including both specialized companion cells or albuminous cells and unspecialized cells; and supportive cells, such as fibres and sclereids.

Excretion of sap is not a function of transpiration. Rest all options are its functions.

The function of hairs present on the leaf surface is to reduce transpiration.They are also known as Trichomes.

Exosmosis causes plasmolysis. It is due to outward movement of water from cell.

Thrombocytes are the blood cells whose function is to stop bleeding.

Mammalian erythrocytes have short life span due to absence of nucleus.

Blood pressure is measured by an instrument called sphygmomanometer. It is composed of an inflatable cuff to restrict blood flow and a mercury or mechanical manometer to measure the pressure.

Blood clotting cannot take place in the absence of vitamin k. It is an important factor in clotting cascade.