NAME ______PERIOD ______DATE ______

PLANT MITOSIS: MICROVIEWER ACTIVITY

INTRODUCTION

In this unit we examine one of the fundamental processes by which plants reproduce themselves. In the unit, we will use the Microviewer, microslide and text folder.

Examine each slide and study the description in the text folder. After studying each slide and the printed text, answer the question for that slide on this worksheet. You will findthe answers as you learn move about this subject. Draw what you see in the space provided.

FOREWORD

  1. Why are new plants, formed by cuttings from older plants, just like the parent plant?

______

  1. Another name for cell division is ______.

SLIDES

Slide 1 – Early Prophase

3. Draw a cell that illustrates the beginning of mitosis.

4. Another term for the “resting phase” is ______

  1. At what stage do the chromosomes duplicate themselves?

______

  1. At what stage does mitosis begin? ______

Slide 2 – Prophase

7. What has happened to the chromosomes at this stage? ______

______

8. Compare this slide with slide 1. What is happening to the shape of the nucleus?

______

Slide 3 – Metaphase

  1. Draw this stage of mitosis as you see it in cell C.
  1. Label the doubled chromosomes in your drawing.
  1. This stage is called ______
  1. The chromosomes line up in the middle of the cell at a place called

______

Slide 4 – Early Anaphase

  1. What has happened to the chromosomes? ______

______

  1. Draw the cell at D.
  1. Label(ON THE DIAGRAM YOU DREW) a pair of chromosomes that are separating.

Slide 5 – Anaphase

16. At what stage is cell E? ______

17. At what stage is cell B? ______

  1. How many sets of chromosomes are visible at cell E? ______

Slide 6 – Late Anaphase

19. Draw cell F as you see it.

20. How does stage F differ from stage E? ______

______

Slide 7 – Telophase

  1. What does the horizontal line through the middle of cell G represent?

______

  1. Compare the cell at the extreme upper right side of slide 2 with cell G.

______

______

  1. Which cell is further advanced, the cell on the upper right side of Slide 2 or cell G? ______

Slide 8 – Late Telophase

24. At what stage is cell H? ______

  1. If the original cell A contained 16 chromosomes, the number of chromosomes found in each new

cell labeled H will be (8) (16) (24) (32) or (48) ANSWER: ______

STAAR CONCLUSION QUESTIONS

Look at the graph below. Use the graph to help you answer questions 26-28

26. ______Which of the following statements most accurately describes the graph?

a. the graph shows how a cell changes its activities as a result of changes in DNA content

b. the graph shows why the DNA content of a cell changes.

c. The graph shoes how the DNA content of a cell changes during interphase and mitosis.

d. The graph shows how DNA is replicated

  1. ______The DNA content of the cell represent in the graph changes
  1. onceb. twicec. three timesd. four times

28. ______Looking at the graph- at the point labeled X, which stage of interphase is occurring?

a. G1b. G0c. S d. G2

29. ______As humans grow, their bodies change. Which of these statements explains how humans grow?

A cells form a cell wall

B cells undergo mitosis

C cells increase in size

D cells merge to become larger

31. ______In the S Phase of the cell cycle, a body cell copies its DNA. This DNA replication occurs in preparationfor which of the following processes?

A cellular respirationC translation

B facilitated diffusionD mitosis

33. A goldfish contains 96 chromosomes. How many chromosomes will each daughter cell have after

mitosis of a goldfish cell is complete?

A 24C 96

B 48D 192