Tag: microscope

Questions Related to microscope

Multiple choice botany cell structure and micro-organisms cell theory microscope cell and its discovery

Magnification power of a light compound microscope depends on

  1. Power of eye piece lens

  2. Power of an occular lens

  3. Both A and B

  4. None of the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The power of magnification of a microscope is the product of the powers of the occular (eyepiece) and the objective lens. The maximum normal magnifications of the occular and the objective are 10x and 100x respectively, giving a final magnification of 1,000x.

Multiple choice botany cell and cellular organization cell theory microscope cell and its discovery

Robert Hooke

  1. Lived in the 19$^{th}$ century.
  2. Observed cork cells.

  3. Invented lens.

  4. Constructed a microscope.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Robert Hooke discovered cell in the year 1665. He observed cork cell in the bark of Spanish oak tree under a simple microscope and was able to see the empty structures surrounded by walls and named it a cell. He elucidated his observation in a book called "Micrographia".

Multiple choice botany cell and cellular organization cell theory microscope cell and its discovery

Who discovered and coined the term 'cell'?

  1. Grew

  2. Brown

  3. Robert Hooke

  4. Darwin

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The cell was discovered by Robert Hooke in 1665 when he saw an empty box like compartments in a very thin slice of cork under his microscope. He wrote a book 'Micrographia' and coined the term cellulae which was later changed into the cell.

Multiple choice botany cell and cellular organization cell theory microscope cell and its discovery

The credit of applying a microscope for the first time for the study of biological object goes to

  1. J.B. Lamarck

  2. Robert Hooke

  3. R.J. H. Dutrochet

  4. Rudolf Virchow

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Robert Hooke observed section of a cork  below a microscope created or structured by him

So, the correct answer is 'Robert Hooke'

Multiple choice botany cell and cellular organization cell theory microscope cell and its discovery

The most advanced form of microscope is 

  1. Compound microscope

  2. Simple microscope

  3. Electron microscope

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An electron microscope uses a beam of accelerated electrons as a source of illumination, allowing for much higher magnification and resolution than light-based microscopes.

Multiple choice botany cell and cellular organization cell theory microscope cell and its discovery

Who invented the first compound microscope?

  1. Robert Hook

  2. Robert Koch

  3. Leeuwenhoek

  4. Z. Janssen

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Zacharias Janssen was the first scientist who is responsible for the invention of the compound microscope. The scientist worked and manufactured the different type of lenses. He made a cylindrical tube-like structure and arranged many different lenses in different orientations within the tube. This led to the formation of the compound microscope which was also known as the telescope. 

Thus, the correct answer is option D.