Life Processes Worksheet-16

Life Processes Worksheet-16


  1. Why are the walls of ventricles thicker than the auricles?


  1. What is the structural difference between the auricles and ventricles?


  1. What consequences will occur if there is no tubular reabsorption in the nephrons of kidneys?


  1. What is the main function of lymphocytes?


  1. What is the difference between bicuspid and tricuspid valves?


  1. What is the difference between plasma and serum?


  1. Give the difference between plasma and lymph.


  1. Give the difference between pulmonary artery and pulmonary vein.


  1. How many types of valves are present in the heart of man?


  1. What is the role of blood pressure in circulation?


  1. What is the path of translocation of food in plant?


  1. Name the water and mineral conducting element of non-flowering plants. Mention how conduction takes place in it?


  1. What are the different constituents or substances present in plasma?


  1. Give a schematic diagram to show absorption of water through root hairs.


  1. Why does the heart of man have double circulation?


  1. Why is transpiration considered a necessity for better ascent of sap?


  1. Differentiate between excretion and osmore-gulation.


  1. Name the various cells through which water moves to reach the leaves.


  1. What is the average life span of an erythrocyte in human? Where are they produced in foetus and in human?


  1. What are the differences between autotrophic nutrition and heterotrophic nutrition?


  1. What is the function of digestive enzymes?


  1. How is the small intestine designed to absorb digested food?


  1. What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?


  1. What are the different ways in which glucose is oxidised to provide energy in various organisms?


  1. How are the lungs designed in human beings to maximise the area for exchange of gases?


  1. What are the components of the transport system in highly organised plants? What are the functions of these components?


  1. What are the methods used by plants to get rid of excretory products?


  1. How is the amount of urine produced regulated?


  1. How are fats digested in our body? Where does this process take place?


  1. What is the role of the acid in our stomach?