Question

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Answer 1

Required Answers:-

1. All organisms are composed of cells.
2. The cell is the basic unit of life
3. All cells arise from pre-existing cell.

Explore more:-

Mathias schleiden, a botanist observed the plant body and stated that all plants are made up of cells. Theodor schwann, a zoologist observed the animals and stated that all animals are made up of cells.

He also concluded that cell wall is a unique characteristics of plant cell. The outer boundary of animal cell is plasma membrane. They together proposed the cell theory$.$

Later R.Virchow, a pathologist gave a final shape to the cell theory. He added omni cellula e cellula which means all the new cells are formed from the pre-existing cells.

Answer 2

Answer:

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Direction : The cell theory was published in 1839 by Matthias Scheiden and Theodore Schwann. It is the foundation of modern biology.

❶ All organisms are composed of cells .

❷ The cell is the basis unit of life .

❸ All cells arise from pre-existing cell.

☯ EXTRA INFORMATION ☯

☣ Cell :-

• A cell is the smallest unit of life. Therefore, cells are often described as the "building blocks of life". Cell biology (also called cellular biology or cytology) is the study of cells.

☣ Cell Theory :

• Cell theory states that living things are composed of one or more cells, that the cell is the basic unit of life, and that cells arise from existing cells.