Question

The occurrence of air bubbles while observing the cells in a matchstick under a microscope is avoided because
A. It affects the visibility
B. It is deeply stained
C. It is located at the periphery
D. None of the above

Answer 1

Hint:The occurrence of the air bubbles took place during the observation of an experiment. The experiment was done by the scientist, Robert Hooke. The above sentence has a reason behind it which is to be identified.

Complete answer: The experiment was performed by Robert Hooke. He observed the matchstick cells with the help of a microscope. He took a section of the matchstick which was to be observed and placed it on a slide. The slide was then covered by a coverslip. There are certain reasons for which the air bubbles are to be avoided, that is the presence of air bubbles leads to the reduction of visibility of the cell structure under the microscope.
The matchstick experiment was done by Robert Hooke to discover the existence of the cell, in the year 1665. He observed the cells to be rectangular and dead, that is without any nucleus, cytoplasm, and was similar to the cork cell.
Thus, it is observed that option A is the correct answer.
On observing the other options-
The matchstick cells are not stained by the air bubbles, that is, air bubbles do not cause any kind of staining in the cells. Air bubble has no relation to being present at the peripheral surface.
"None of the above" can be considered to be the correct answer as we found that the presence of air bubbles leads to the reduction of visibility effect which is given in option A.

So, option A) is the correct answer.

Note: Living cells have nucleus, cytoplasm, cell organelle and division of cells take place. It also has the potential to carry metabolism in it. It contains genetic material, that is, DNA as it is living.