Tag: cell and its discovery

Questions Related to cell and its discovery

The term microscope was coined by

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

  1. Janssen and Janssen.

  2. Faber.

  3. Robert Hooke.

  4. Leeuwenhoek.

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Correct Option: B

The class room compound microscope was invented by

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

  1. Kepler and Galileo.

  2. Janssen and Janssen.

  3. Tolles and Abbe.

  4. Knoll and Ruska.

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Correct Option: A

Which one of the following microscopes can be used for studying unstained and dividing cells?

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

  1. Electron microscope

  2. Phase-contrast microscope

  3. Polarising microscope

  4. All the above

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Correct Option: B

The scientist to first employ magnifying glass for studying living beings is

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

  1. Robert Hooke.

  2. Huxley.

  3. Gesner.

  4. Tolles.

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Correct Option: C

The reflector of a classroom microscope is

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

  1. Convex lens.

  2. Concave lens.

  3. Concavo-convex lens.

  4. Plano-concave lens.

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Correct Option: D

Present-day condenser of the optical microscope was developed by_________.

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

  1. Abbe

  2. Tolles

  3. Gesner

  4. Galileo

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Correct Option: A
Explanation:
Option $ - (A) $ Abbe 
The Abbe condenser is named for its investor Emst Abbe, who developed it in 1870. The Abbe condenser, Which was originally designed for Zeiss is mounted below the stage of the microscope.

Ocular lens is placed

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

  1. Near to the slide.

  2. On the path between reflector and object.

  3. Near to the eye.

  4. Near to the source of light.

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Correct Option: C

Robert B. Tolles is famous in microscopy for the invention of

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

  1. Diaphragm.

  2. Stage of the microscope.

  3. Oil immersion lens.

  4. Inbuilt illumination.

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Correct Option: C

Dark field microscope was invented by

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

  1. Lister.

  2. Zernicke.

  3. Merten et. al.

  4. Carpersson.

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Correct Option: A
Explanation:

In 1830, J.J. Lister (the father of Joseph Lister) invented the darkfield microscope, in which the standard brightfield (Abbe) condenser is replaced with a single or double-reflecting dark field condenser.

Nose piece of a microscope is ____________.

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

  1. Eye piece.

  2. Capable of revolving.

  3. Site for objective.

  4. Both B and C.

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Correct Option: D