Tag: botany

Questions Related to botany

The conjugation of antibodies with which of the following is useful in fluorescence microscopy?

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

  1. Metal ions

  2. Dyes

  3. Carbohydrates

  4. Lipids

Show answer
Correct Option: B

Dry weight of macromolecules like RNA, proteins and DNA can be known through which method?

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

  1. Fluorescent microscopy

  2. Dark field microscopy

  3. Phase contrast microscopy

  4. Differential interference contrast microscopy.

Show answer
Correct Option: D

Which of the following statements is not true?

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

  1. Fluorescent microscopy uses normal light to view molecules.

  2. Immersion oil increases refractive index.

  3. Electron microscope uses electromagnetic lenses.

  4. Scanning tunneling microscope is used for scanning computer chips for defects.

Show answer
Correct Option: A

The first compound light microscope was constructed by which scientist?

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

  1. Hooke

  2. Brown

  3. Leeuwenhoek

  4. Zernicke

Show answer
Correct Option: A

The resolving power of a compound microscope will enhance with

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

  1. Increase in both wavelength of light and numerical aperture.

  2. Decrease in both wavelenth of light and numerical aperture.

  3. Decrease in wavelength of light and increase in numerical aperture.

  4. Increase in wavelength of light and decrease in numerical aperture.

Show answer
Correct Option: C
Explanation:
The resolving power of a compound microscope can be defined as the ability of the microscope to form separate images of two objects placed very close to each other.
The resolving power of the compound microscope will increase with a decrease in wavelength of light and an increase in the numerical aperture.
So, the correct answer is 'Decrease in wavelength of light and an increase in the numerical aperture'.

Magnifying glasses were used for studying living beings for the first time by _________________.

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

  1. Galileo Galilei.

  2. Gesner.

  3. Faber.

  4. Leeuwenhoek.

Show answer
Correct Option: A

Kepler and Galileo developed

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

  1. Field glasses.

  2. Telescope.

  3. Oil immersion.

  4. Class room microscope.

Show answer
Correct Option: A

Zernicke invented which microscope?

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

  1. Phase-contrast microscope

  2. Interference microscope

  3. Polarising microscope

  4. Fluorescent microscope

Show answer
Correct Option: A

Branch dealing with study of cell is

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

  1. Histology

  2. Cytology

  3. Morphology

  4. Anatomy.

Show answer
Correct Option: B
Explanation:

A. Histology is the branch of biology that deals with the study of animal and plant tissues.

B. Cytology is the branch of biology that deals with the study of structure and function of the cell (animal and plant cell).
C.  Morphology is the branch of biology that deals with the study of the structure and the form of organisms and their structural features.
D. Anatomy is the branch of biology that deals with the study of the internal detailed structure of organisms and their parts.
So, the correct answer is 'Cytology'.

A compound microscope has the widest field when eyepiece and objective lenses are .............. respectively.

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

  1. $10X, 5X$

  2. $15X, 5X$

  3. $5X, 5X$

  4. $5X, 45X$

Show answer
Correct Option: A