Some of the major discoveries of the cell are given below in the table .
Scientist |
Year |
Work |
Robert Hooke |
1665 |
Discovered cells for first time in cork slice with the help of a primitive microscope. |
Leeuwenhoek |
1674 |
Discovered free living cells in pond water by his improved microscope. |
Robert Brown |
1831 |
Discovered nucleus in cell |
Schleiden and Schwann |
1838 - 1839 |
Presented cell theory, which states that all plants and animals are composed of cells and the cell is the basic unit of life. Schwan cell theory: A. He reported that cells have a thin outer later which is today known as plasma membrane. B. Cell wall as unique character of plant cell. C. Body of plant and animals are composed of cells and product of cells. |
Purkinje |
1839 |
Coined the term 'protoplasm' for the fluid substance of cell |
Cells are first focused in microscope under __________________ | |||
Right Option : B | |||
View Explanation |
Electron microscope was made by _______________ | |||
Right Option : D | |||
View Explanation |
Which of the following statements is true about the contribution of scientists in early studies of cell? | |||
Right Option : C | |||
View Explanation |
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.