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Why is energy needed by an organism even during sleep?
Because even when an organism is as asleep various biological process keep on occurring in its body which requires energy.
What is photolysis?
Photolysis, the phenomena of breaking of water molecules using solar energy absorbed by chlorophyll molecule is photolysis.
What is osmoregulation?
Osmoregulation is the maintenance of optimum concentration of water & salts in the body fluid.
What is chyme?
The slightly digested food, enters the stomach through alimentary canal. In stomach, this food is turned along with gastric juices converting this food into a semi- solid paste called chyme.
Name the enzymes, which is present in infants & absent in adults?
How the amount of urine produced regulated?
The amount of urine produced depends on how much excess H2
O there is in body and or how much of dissolved waste there is to be excreted. More water & dissolved waste in the body will produce more urine and on the other hand less H2
O & less waste will lead to produce less urine.
What is compensation point?
When the rate of photosynthesis is equal to the respiration, it is called compensation point.
What is root pressure?
it is a pressure developed in the xylem due to metabolic activity of the root cells. It is a hydrostatic pressure developed in the root system that pumps the water or sap in the root xylem.
What is transpiration pull?
Due to evaporation of water. Water is pulled upward in the plant which creates an upward suction force called transpiration pull.
What is ascent of sap?
Absorbed water from the soil contains dissolved minerals and hence it is called ascent of sap. Transportation of sap from roots to leaves at the top is called ascent of sap.
State the function of epiglottis?
At the top of the trachea (or wind pipe) there is a flap of cartilage called epiglottis. The function of epiglottis is to cover the mouth of trachea (or wind pipe) when we swallow food so that the food may not enter the trachea (or wind pipe).
Differentiate between arteries, veins and Capillaries
Differentiate between blood and Lymph
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