Question

Archana was preparing temporary mount of onion peel by adding a red coloured solution and mount it in a glass slide. she had written some questions from her observations and the questions are given below. Find out the answers.
i. Name the red coloured solution used for mounting onion peel?
ii. The outermost covering of onion cell is
a. cell wall
b. nuclear membrane
c. plasma membrane
d. middle lamella
iii. In plant cell, nucleus is generally placed
a. in the centre
b. on one side of the cell
c. attached to cell membrane
d. on one corner of the cell
iv. Draw neat and labelled diagram of onion peel

Answer 1

Explanation:

2) plasma membrane

3) a

Answer 2

Initially, onion peel has to be taken out.

Then, keep the onion peel in water in a petridish. This will remove the impurities sticked to onion peel.

Then, add a few drops of safranine stain and transfer to a slide.

Then, add a drop of glycerine on onion peel. This step prevents the peel from drying out.

Then, cover it with a cover slip for observing it under the microscope and to study the cell pattern.