II. Long Answer Questions:
1. What are the functions of blood?
2. Explain the process of removal of waste materials from our body.
3. Explain the process by which water is transported from the root to the leaves.
4. Compare perspiration and transpiration
Answers
Ans -1 The functions of blood are :
1- Blood regulate temperature .
2- Blood transport oxygen and nutrients to the lungs .
3- Blood brings waste products to the kidneys and the liver .
1. Blood has many functions including
(a) transporting gas and nutrients to the lungs and tissues
(b) forming blood clots to forestall excess blood loss
(c) carrying cells and antibodies that fight infection
(d) bringing a waste product to the kidneys and liver, that filter and clean the blood
(e) regulating body temperature.
2. The method of removal of wastes from our body is known as Excretion.
>Excretion is that the method of removing wastes and excess water from the body.
>it's one of the most important ways in which the body maintains physiological conditions. though the kidneys square measures the most organs of excretion, many alternative organs additionally expel wastes. >They embrace the massive internal organ, liver, skin, and lungs. All of those organs of excretion, in conjunction with the kidneys, conjure the discharge system.
The roles of the discharge organs aside from the urinary organ square measure are summarized below:
The large internal organ eliminates solid wastes that stay when the digestion of food.
The liver breaks down excess amino acids and toxins within the blood.
The skin eliminates excess water and salts in sweat.
The lungs exhale vapor and dioxide
3. the process by which water is transported from the root to leaves is discussed below
>The major mechanism by that water (along with dissolved materials) is carried upward through the vascular tissue is named TATC (Transpiration-Adhesion-Tension-Cohesion).
>It ought to be noted that TATC, whereas supported by most scientists, is speculated however not tested to be at add terribly tall trees. during this theory, transpiration, the evaporation of water from the leaf, is theorized to form a pressure differential that pulls fluids (held along by cohesion) up from the roots.
4. Transpiration It takes place in plants.
perspiration It takes place in animals.
In transpiration solely vapor is removed.
In perspiration Sweat containing carbamide, body waste add and salts ar removed with water.
Transpiration takes place through the leaves and stem and through the stomata and lenticels.
Perspiration takes place through the skin.