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1. In plants,the cell wall is made up of _____________.
2.The cell membrane is also called the __________ .
3. All living organisms are made up of one or more __________.
4. __________ gives rigidity to the cell.
5.___________ are used to colour parts of the cell to study the detailed structure.
6. The scientist _______ in 1665 observed slices of cork under a simple magnifying device.​

Answer 1

1.cellulose microfibrils

2.The plasma membrane

3.The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells

4.The strongest component of the cell wall is a carbohydrate called as cellulose, a polymer of glucose. When the additional layer of lignin is added to the primary cell wall a secondary cell wall is formed. Secondary cell wall increases the rigidity and strength of the cell.

5.Safranin is used to colour the parts of a cell and to study their details. it is basically pink in colour.

6.Robert Hooke

Answer 2

Explanation:

The Plant Cell Wall

The plant cell wall is an elaborate extracellular matrix that encloses each cell in a plant. It was the thick cell walls of cork, visible in a primitive microscope, that in 1663 enabled Robert Hooke to distinguish and name cells for the first time. The walls of neighboring plant cells, cemented together to form the intact plant (Figure 19-68), are generally thicker, stronger, and, most important of all, more rigid than the extracellular matrix produced by animal cells. In evolving relatively rigid walls, which can be up to many micrometers thick, early plant cells forfeited the ability to crawl about and adopted a sedentary life-style that has persisted in all present-day plants.