Organisational Structure in Living Organisms
Organisational Structure in Living Organisms
The cell is the smallest unit of a living organism. It has a structure of its own and performs many functions. Group of cells make a tissue. Tissues collectively form organs. The different organs in turn, working together for a certain major activity, form an organ system. All these levels of organisation are called as level of organization of organisms.
Cells are the basic unit of life- they are the smallest functional units of an organism and are microscopic objects which contain a cytoplasm and a nucleus surrounded by a cell membrane .
Tissues are groups of cells of the same type or from the same place that accomplish a particular task. For eg; Muscle tissues, connective tissues, nervous tissue etc.
Organs are part of an organism that is usually self- contained and has a specific function or purpose. For eg: Heart, liver, kidneys etc.
Which of the following are correct ? (a) Tissues are groups of cells of the same type or from the same place that accomplish a particular task. (b) Cells are the basic unit of life which contain a cytoplasm and a nucleus surrounded by a cell membrane .
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| Right Option : D | |||
| View Explanation | |||
Which of the following are correct ? (a) Organs are part of an organism that is usually self- contained and has a specific function or purpose. For eg: Heart, liver, kidneys etc. (b) Organ system is a group of organs that collectively do a particular job or function. For eg: The digestive system contains the stomach, oesophagus, small intestine, large intestine, pancreas, liver, gall bladder, rectum and anus. (c) Organism is an individual which can perform all the functions of its own. Different organ systems in an organism function in coordination.For eg: digestive system, circulatory system, urinary system etc. | |||
| Right Option : D | |||
| View Explanation | |||
Cells are the smallest functional units of an organism which contain a cytoplasm and a nucleus surrounded by a __________________ . | |||
| Right Option : A | |||
| View Explanation | |||
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