1 An organ is a collection of different tissues that carries out a particular function (e.g. liver). 2  An organ system is a collection of organs that functions to carry out a specific task in the organism (e.g. digestive system).  At each level of organization, the structure helps determine the function.
Shivalik Express: Toy Train to Shimla. The best way to reach Shimla is to travel by Toy train from Kalka. The railway track is small in width between Kalka and Shimla and is known as meter gauge track opened by British Government in the year 1903. The distance of 96 KM between Shimla and Kalka passes through 102 tunnels and 87 bridges. There are more than 20 stations in this railway system which still uses the old Neales Token Instrument system for track interlocking. It connects Kalka at a height of 656 meter to Shimla at 2076 meter from mean sea level.
#14. Punjab Roadways and private buses run frequently from Chandigarh to Amritsar and the journey takes 7 hours. The Delhi Ambala Kalka rail line is well served by several day and overnight trains, including two Shatabdi services. need to get from Chandigarh to Amritsar in as little time as possible. So naturally I looked to see if any trains were going between these cities, and was surprised to find that there are no direct trains between Chandigarh and Amritsar.