Mitosis phases worksheet showing detailed cell division stages.

To solve this worksheet, we need to look at the drawings of the cells and match them to the four stages of mitosis: Prophase, Metaphase, Anaphase, and Telophase.

Here is how to identify each stage based on what happens to the chromosomes (the X-shaped or V-shaped structures inside the cell):

1. Prophase: This is the beginning. The chromosomes become visible as distinct shapes (like little worms or X's). The nuclear envelope (the circle holding the DNA) starts to break down.
2. Metaphase: The chromosomes line up in the exact middle of the cell. Imagine a straight line drawn across the center; all the chromosomes sit on that line.
3. Anaphase: The chromosomes split apart. The two halves of the "X" separate and are pulled toward opposite ends of the cell. They look like "V" shapes being dragged away from the center.
4. Telophase: The chromosomes reach the opposite ends of the cell. Two new nuclei start to form around them. The cell usually starts to pinch in the middle to divide into two.

Let's sort the diagrams from your worksheet:

* Top Row:
* Left: The chromosomes are lined up perfectly in the middle. This is Metaphase.
* Middle: You can see distinct chromosome shapes, but they aren't lined up yet, and there is still a nucleus circle fading away. This is Prophase.
* Right: The chromosomes are being pulled apart to opposite sides. This is Anaphase.

* Bottom Row:
* Far Left: The cell has pinched in the middle, and there are two groups of chromosomes at opposite ends with new circles forming around them. This is Telophase.
* Second from Left: There is a clear nucleus with messy chromatin inside, and no distinct X-shaped chromosomes yet. This represents the cell before division really kicks off, often grouped with early Prophase.
* Third from Left: Similar to the one above, distinct chromosomes are forming but not organized. This is also Prophase.
* Fourth from Left: Chromosomes are clearly visible and scattered, nucleus breaking down. This is Prophase.
* Fifth from Left: Chromosomes are separating. This is Anaphase.
* Sixth from Left: Chromosomes are further apart, moving to poles. This is late Anaphase.
* Far Right: Two new nuclei are fully formed, and the cell is dividing. This is Telophase.

Summary for filling out the boxes:

* PROPHASE: Look for the diagrams where chromosomes are just appearing as distinct shapes, scattered around, and the nucleus is disappearing. (Examples: Top row middle, Bottom row 2nd, 3rd, and 4th from left).
* METAPHASE: Look for the diagram where chromosomes are lined up in a single file line across the center. (Example: Top row left).
* ANAPHASE: Look for diagrams where the chromosomes are separated and moving away from each other toward the edges. (Examples: Top row right, Bottom row 5th and 6th from left).
* TELOPHASE: Look for diagrams where the cell is pinching in half, and two new nuclei are forming at opposite ends. (Examples: Bottom row far left and far right).

Final Answer:
Prophase: Diagrams showing scattered chromosomes and a dissolving nucleus (Top Middle; Bottom 2nd, 3rd, 4th from left).
Metaphase: Diagram showing chromosomes lined up in the middle (Top Left).
Anaphase: Diagrams showing chromosomes pulling apart to opposite sides (Top Right; Bottom 5th and 6th from left).
Telophase: Diagrams showing two new nuclei forming and the cell pinching in the middle (Bottom Far Left and Far Right).