Hi brainy I'm a student of science and Iwanted to ask important questions, can you tell, plz plz plz plz
Q. What is transpiration?
Q. What is the function of the lymph nodes?
Q. Describe the structure of the human heart with a diagram.
Q. How does oxygen -rich blood reach every part of the body.
Q. Explain the composition of blood.
Q. Difference between arteries and veins.
Q. How is blood purified in the kidneys?
Q. Describe the vascular system in plants.
Answers
1.Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers.
2.Lymph nodes are major sites of B and T lymphocytes, and other white blood cells. Lymph nodes are important for the proper functioning of the immune system, acting as filters for foreign particles and cancer cells.
3.In tiny blood vessels in the lung the red blood cells pick up oxygen from inhaled air and carry it through the bloodstream to all parts of the body. When they reach their goal, they release it again. The cells need oxygen for metabolism, which also creates carbon dioxide as a waste product.
4.Blood is a suspension of blood elements (erythrocytes, leukocytes, and platelets) in blood plasma. ... Blood plasma, making up the liquid portion of blood, is a colloid solution of organic and inorganic substances (electrolytes, nutrients, proteins, hormones etc.) with an addition of dissolved blood gases.
5.The chief difference between arteries and veins is the job that they do. Arteries carry oxygenated blood away from the heart to the body, and veins carry oxygen-poor blood back from the body to the heart. Your body also contains other, smaller blood vessels.
6.Blood Filtration in the Kidney. ... This blood is sent to the body's filter treatment plant, where it is purified by the kidneys and circulated on to the rest of the body. Some of the blood flow becomes fluid waste (1/1000th to 2/1000th) and is sent into the bladder for storage until it can be conveniently expelled.
7.Vascular system, in plants, assemblage of conducting tissues and associated supportive fibres. Xylem tissue transports water and dissolved minerals to the leaves, and phloem tissue conducts food from the leaves to all parts of the plant.
HEY
HERE IS YOUR ANSWER
1.the exhalation of water vapour through the stomata.
2.Lymph nodes are major sites of B and T lymphocytes, and other white blood cells. Lymph nodes are important for the proper functioning of the immune system, acting as filters for foreign particles and cancer cells. Lymph nodes do not have a detoxification function, which is primarily dealt with by the liver and kidneys.
3.Heart is the central organ for pumping the blood throughoutt he body. It is located in the chest cavity with its lower part pointing towards the left. Its size is that of the person’s fist.
*It pumps blood rich in carbon dioxide to the lungs and oxygen-rich blood to other parts of the body.
*The heart consists of four chambers namely atria and ventricles. The two upper chambers of the heart are known as the atria. The two lower chambers of the heart are the ventricles.
*The deoxygenated blood is completely separated from the oxygenated blood completely. The atria and ventricles are separated by many types of valves which prevent the mixing up of pure blood from that of impure blood.
*Heart is made up of strong cardiac muscles. The rhythmic contraction and relaxation of the heart constitutes heartbeat.
*Heartbeat can be recognized by placing the palm on the left side of the chest. Stethoscope is a device that amplifies the sound of your heartbeat.
*The pressure applied by blood on the walls of an artery at a particular part is the pulse. The number of times the heart beats in a minute is the same as the pulse rate.The ideal pulse rate is 70 to 80 per minute.
4. In tiny blood vessels in the lung the red blood cells pick up oxygen from inhaled air and carry it through the bloodstream to all parts of the body. When they reach their goal, they release it again. The cells need oxygen for metabolism, which also creates carbon dioxide as a waste product.
5.Blood is a suspension of blood elements (erythrocytes, leukocytes, and platelets) in blood plasma. ... Blood plasma, making up the liquid portion of blood, is a colloid solution of organic and inorganic substances (electrolytes, nutrients, proteins, hormones etc.) with an addition of dissolved blood gases.
6.There are a number of differences between veins and arteries.
Veins:
carry blood from the tissues of the body back to the heart
are usually positioned closer beneath the surface of the skin
are less muscular than arteries, but contain valves to help keep blood flowing in the right direction, usually toward the heart
would collapse if blood flow stops.
Arteries:
carry blood away from the heart to the tissues of the body
are usually positioned deeper within the body
are more muscular than veins, which helps in transporting blood that is full of oxygen efficiently to the tissues
would generally remain open if blood flow stopped, due to their thick muscular layer.
7.Blood Filtration in the Kidney. ... This blood is sent to the body's filter treatment plant, where it is purified by the kidneys and circulated on to the rest of the body. Some of the blood flow becomes fluid waste (1/1000th to 2/1000th) and is sent into the bladder for storage until it can be conveniently expelled.
8.Vascular system, in plants, assemblage of conducting tissues and associated supportive fibres. Xylem tissue transports water and dissolved minerals to the leaves, and phloem tissue conducts food from the leaves to all parts of the plant.
The condition of the xylem, the woody elements in the stem, defines several categories. The protostele has a solid xylem core; the siphonostele has an open core or one filled with generalized tissue called pith. The discontinuous vascular system of monocots (e.g., grasses) consists of scattered vascular bundles; the continuous vascular system of dicots (e.g., roses) surrounds the central pith.
Vascular bundles run longitudinally along the stem. Vascular rays extend radially across the stem, assisting in conduction from the vascular bundles to tissues alongside them. The vascular tissues and supporting tissues constitute the stele.
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