| Direction: Q. 1 to 5 |
| Read the following and answer the questions from [1] to [5]. |
| The body of all organisms are made up of tiny microscopic units called cell. All basic functions of the body like respiration, excretion are carried out by cell. The shape and size of cells are related to the specific function they perform; Some cells like Amoeba have changing shapes. |
| In some cases, the cell shape could be more or less fixed and peculiar for particular type of cell; for example, nerve, cells have a typical shape. |
| Each living cell has the capacity to perform certain basic functions that are characteristic of all living forms. There is a division of labour in multicellular organisms such as human beings. 'This means that different parts of the human body perform different functions. |
| The human body has a heart to pump blood, a stomach to digest food and so on. Similarly, division of labour is also seen within a single cell. |
| In fact, each such cell has got certain specific components within it known as cell organelles. Each kind of cell organelle performs a special function, such as making new material in the cell, clearing up the waste material from the cell and so on. |
| A cell is able to live and perform all its functions because of these organelles. These organelles together constitute the basic unit called the cell. |
| Thus, the cell is the fundamental structural unit of living organisms. It is also the basis functional unit of life. |
A) bread slice
B) onion peel
C) cork slice
D) cheek cells
Correct Answer: C
Solution :
[c] The first cell was observed in cork slice. Robert Hooke in 1665, observed the cells in a cork slice with the help of a primitive microscope.
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