TRANSPORTATION IN ANIMALS AND PLANTS BY NIKHIL PURANIK
ABOUT MIE MY NAME IS NIKHIL PURANIK PURSUING B.E IN MECHANICAL ENGINEERING FROM RNSIT -LIVE IN BENGALURU PROFILE :https://unacademy.com/user/nikhilrpuranik
TOPICS COVERED -CIRCULATORY SYSTEM HEART -EXCRETION IN HUMANS TRANSPORT OF SUBSTANCES IN PLANTS
CIRCULATORY SYSTEM Blood is the fluid which flows in blood vessels and it transports substances like digested food from the small intestine to the other parts of the body. It carries oxygen from the lungs to the cells of the body and also transports waste for removal from the body. The fluid part of the blood is called plasma. One type of cells are the red blood cells (RBC) which contain a red pigment called haemoglobin which binds with oxygen and transports it to all the parts of the body and ultimately to all the cells. The blood also has white blood cells (WBC) which fight against germs that may enter our body.
Lungs Two types of blood vessels are present in the arteries and veins of the body. Arteries carry oxygen-rich blood from the heartary to all parts of the body. Pulmonary artery Pulmonary vein Heart Veins are the vessels which carry carbon dioxide-rich blood from all parts of the body back to the heart. There are valves present in veins which allow blood to flow only towards the heart. of the body Ven- Vein Artery On reaching the tissues, arteries divide further into extremely thin tubes called capillaries. Capillaries The capillaries join up to form veins which empty into the heart
HEART Pulmonary artery he heart is an organ which beats continuously to act as a pump for the transport of blood, which carries other substances with it. Aorta Pulmonay vein The two upper chambers are called the atria and the two lower chambers are called the ventricles. Partition completely Right atrium Left atrium Left ventricle separating the two halves he rhythmic contraction and relaxation of the heart muscles igentricle constitute the heartbeat.
EXCRETION IN HUMANS Kidney The process of removal of wastes produced in the cell of the living organisms is called excretion. The wastes contained in blood is removed by the bloo capillaries present in the kidneys. -The wastes dissolved in water are removed as urine. Ureter From the kidneys, the urine goes into the urinary bladder through tube-like ureters. Urinary bladder- is stored in the bladder and is passed out through th urinary opening at the end of a muscular tube called urethra. Urethra Urinarv opening
TRANSPORT OF SUBSTANCES IN PLANTS Plants absorb water and minerals by the roots, which have root hair to increase the surface area of absorption. Plants have pipe-like vessels to transport water and nutrients from the soil, which are made of special cells, forming the vascular tissue. A tissue is a group of cells that perform specialised function in an organism The vascular tissue for the transport of waterand nutrients in the plant is called the xylem and the vascular tissue which transports food to all parts of the plant is called phloem Transpiration is a process in which evaporation of water from the plant takes place through the stomata present on the leaves. This generates a suction pul which helps to transport water to great heights in tall trees
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