Question

1) Observe an Onion Root Tip using a microscope. Draw the
entire “Tip” (use the 10x lens = 100x total). You should be
able to distinguish an inner & outer layer of the tip.
2) Find and draw each of the Fours Mitosis Stages at 400x.
3) See the “Mitosis: Onion Root Tip” picture for examples of
the cell stages you will look for.
4) Each of the four mitosis stages should show A Single Cell
drawn to fill the entire microscope view.
5) The Nucleus has broken down, so do not draw a nuclear
membrane around the chromosomes.
6) INCLUDE ALL FOUR SIDES OF THE CELL WALL

Answer 1

Answer: 1) Microscopy of onion root tip at 100X: Here we cannot differentiate the stages of mitosis in the cells although we can just see the individual cells and the cell boundaries also the nucleus. If we draw what we see under the microscope it will almost look like what is shown in the picture. Please refer to the picture below.

2) Onion root tip at 400X: Here we can observe the cells clearly and we can also differentiate between the different stages of mitosis as observed in the cell. In prophase chromosome is condensed, in metaphase chromosome is arranged in the midline of the cell, in anaphase chromatids are pulled apart at opposite poles of the cell and in telophase cell is ready to divide and two nuclei are formed for the daughter cells. Please refer the picture which depicts microscopy of onion root tip cells at 400X where the stages of mitosis is marked in the picture.