Question

Write the contribution of1) robert hooke 2) leeuwenhoek 3) robert brown

Answer 1

Robert hook discovered the cell in ok tree.

A.V.Leeuwenhook observed living cells in bacteria, protozoa, sperms, erythrocytes.

Robert brown discovered the nucleus in the cells of orchid roots

Answer 2

⭐⭐⭐⭐⭐ ANSWER ⭐⭐⭐⭐⭐

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❄❄❄ CONTRIBUTIONS ❄❄❄

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1] ROBERT HOOKE :-

➡ The first person who discovered and coined the term "CELL'' is Robert Hooke in 1665.

➡ He observed small, thin pieces of a cork (bark of old oak tree) under microscope.

➡ He saw very tiny hollow room-like structures and coined the term "CELL" for these structures.

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2] LEEUWENHOEK

➡ In 1674, Anton Leeuwenhoek with the help of a improved microscope discovered the free living cells in pond water for the first time.

➡ His first discovery was the development of a simple microscope specially for observing cells.

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3] ROBERT BROWN

➡ He, however, is remembered because of discovery of a important cell organelle, named, NUCLEUS.

➡ In 1831, Robert Brown had discovered cell nucleus.

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FOR DIAGRAMMATIC CONCEPTION, REFER TO THE PICTURES ABOVE ⏫⏫

❄❄❄ PICTURES INVOLVED ❄❄❄

✔ PICTURE 1 : Robert Hooke's observed dead cork cells.

✔ PICTURE 2 : Robert Hooke.

✔ PICTURE 3 : Antony Van Leeuwenhoek.

✔ PICTURE 4 : Robert Brown.

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⭐⭐⭐ ALWAYS BE BRAINLY ⭐⭐⭐

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