Mitosis and Meiosis Worksheets - Free Printable

To solve this worksheet, we need to identify the stages of mitosis for both animal and plant cells. Mitosis is the process where a cell divides its nucleus to make two identical daughter cells. The main stages are Prophase, Metaphase, Anaphase, and Telophase. There is also Interphase (before mitosis starts) and Cytokinesis (the final splitting of the cell body).

Here is how to tell them apart:
1. Interphase: The nucleus looks like a messy ball of yarn (chromatin). You can usually see a dark spot inside called the nucleolus. The chromosomes haven't condensed into distinct X-shapes yet.
2. Prophase: The "X" shaped chromosomes become visible and thick. The nuclear membrane starts to disappear. In animal cells, you might see centrioles (little T-shapes) moving to opposite sides.
3. Metaphase: The chromosomes line up perfectly in the middle of the cell (like the letter M for Middle).
4. Anaphase: The chromosomes split apart and move to opposite ends of the cell. They look like V-shapes being pulled away from each other.
5. Telophase: Two new nuclei start to form at opposite ends. The chromosomes start to uncoil.
6. Cytokinesis: The cell physically splits into two.
* Animal Cells: The cell membrane pinches in the middle like a drawstring bag (cleavage furrow).
* Plant Cells: A new wall forms down the middle like a brick wall being built (cell plate).

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Part 1: Animal Cells (Top Section)

Let's look at the diagrams from left to right, top to bottom.

Row 1:
1. First Image: We see distinct X-shaped chromosomes floating around. The nuclear membrane is gone. Centrioles are at the poles. This is Prophase.
2. Second Image: The cell is pinching in the middle. Two new nuclei are forming. This is the end of division. This is Telophase (often grouped with Cytokinesis). Since it shows the pinching, it represents the final stage of nuclear division leading into cell splitting. Let's call it Telophase.
3. Third Image: The cell has completely split into two separate smaller cells. This is Cytokinesis.

Row 2:
4. Fourth Image: The nucleus is intact, looking like a ball of yarn with a dark spot (nucleolus). No distinct X-chromosomes. This is Interphase.
5. Fifth Image: The chromosomes are lined up perfectly across the center (equator) of the cell. Spindle fibers are attached. This is Metaphase.
6. Sixth Image: The chromosomes have split and are moving to opposite sides. They look like they are being pulled apart. This is Anaphase.

*(Note: Sometimes worksheets label the pinching stage as Cytokinesis and the two separate cells as the result. However, standard labeling for the nuclear stages usually puts Telophase as the formation of two nuclei within one pinching cell. Let's re-evaluate based on standard 5-stage models often taught: Interphase -> Prophase -> Metaphase -> Anaphase -> Telophase. Cytokinesis overlaps with Telophase.)*

Let's refine the labels for the Animal Cell section based on typical textbook diagrams:
* Image 1 (Chromosomes visible, scattered): Prophase
* Image 2 (Pinching in, two nuclei forming): Telophase
* Image 3 (Two separate cells): Cytokinesis (or Daughter Cells)
* Image 4 (Nucleus with nucleolus, no distinct chromosomes): Interphase
* Image 5 (Chromosomes in middle): Metaphase
* Image 6 (Chromosomes pulling apart): Anaphase

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Part 2: Plant Cells (Bottom Section)

Plant cells have rigid walls, so they don't pinch. Instead, they build a "cell plate" in the middle.

Row 3:
1. First Image: Two groups of chromosomes are at opposite ends. New nuclei are forming. A faint line is starting to appear in the middle. This is Telophase.
2. Second Image: Chromosomes are lined up in the middle. Note the rectangular shape of the cell (cell wall). This is Metaphase.
3. Third Image: A distinct line (cell plate) is forming in the middle, separating the two new nuclei. The cell is dividing. This is Cytokinesis (specifically showing the cell plate formation).

Row 4:
4. Fourth Image: Chromosomes are condensed and visible, but scattered. The nuclear envelope is breaking down. This is Prophase.
5. Fifth Image: The chromosomes are pulling apart toward opposite ends. This is Anaphase.
6. Sixth Image: The nucleus is large and distinct with chromatin (yarn-like) and a nucleolus. The cell is not dividing yet. This is Interphase.

Let's double-check the order and labels to ensure accuracy.

Animal Cells Check:
* Top Left: Prophase (Chromosomes condensing)
* Top Middle: Telophase (Pinching furrow visible, two nuclei)
* Top Right: Cytokinesis (Two separate daughter cells)
* Bottom Left: Interphase (Normal nucleus)
* Bottom Middle: Metaphase (Line up in middle)
* Bottom Right: Anaphase (Pulling apart)

Plant Cells Check:
* Top Left: Telophase (Two nuclei, cell plate starting)
* Top Middle: Metaphase (Line up in middle)
* Top Right: Cytokinesis (Cell plate fully formed/dividing)
* Bottom Left: Prophase (Chromosomes condensing)
* Bottom Middle: Anaphase (Pulling apart)
* Bottom Right: Interphase (Normal nucleus)

Wait, let's look closer at the Plant Cell Row 3, Image 3. It shows two distinct cells with a thick wall between them. This is the completion of cytokinesis.
Let's look at Plant Cell Row 4, Image 1. The chromosomes are thick and scattered. This is Prophase.
Let's look at Plant Cell Row 4, Image 2. The chromosomes are separated and moving to poles. This is Anaphase.
Let's look at Plant Cell Row 4, Image 3. The nucleus is intact. This is Interphase.

So the mapping is:

Animal Cells:
1. Prophase
2. Telophase
3. Cytokinesis
4. Interphase
5. Metaphase
6. Anaphase

Plant Cells:
1. Telophase
2. Metaphase
3. Cytokinesis
4. Prophase
5. Anaphase
6. Interphase

*Self-Correction/Refinement:* In many simple worksheets, "Cytokinesis" and "Telophase" can be tricky.
- Telophase is defined by the reformation of the nuclear envelope and de-condensation of chromosomes.
- Cytokinesis is the division of the cytoplasm.
In the Animal cell top-middle image, the cell is pinching but still one unit. This is late Telophase/Cytokinesis. The top-right image shows two separate cells.
In the Plant cell top-left image, the nuclei are reforming. This is Telophase. The top-right image shows a complete cell wall dividing them. This is Cytokinesis.

Let's provide the most standard labels expected in school biology.

Final List for Animal Cells:
1. Prophase: Chromosomes appear, spindle forms.
2. Telophase: Nuclei reform, cell begins to pinch.
3. Cytokinesis: Two separate cells exist.
4. Interphase: DNA is replicated, nucleus is intact.
5. Metaphase: Chromosomes align in the center.
6. Anaphase: Chromatids separate and move to poles.

Final List for Plant Cells:
1. Telophase: Nuclei reform at opposite ends, cell plate begins.
2. Metaphase: Chromosomes align in the center.
3. Cytokinesis: Cell plate completes, dividing the cell.
4. Prophase: Chromosomes condense, nucleus breaks down.
5. Anaphase: Chromatids separate and move to poles.
6. Interphase: Nucleus is intact, preparing for division.

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Final Answer:

The Stages of Mitosis in Animal Cells:
* Top Left: Prophase
* Top Middle: Telophase
* Top Right: Cytokinesis
* Bottom Left: Interphase
* Bottom Middle: Metaphase
* Bottom Right: Anaphase

The Stages of Mitosis in Plant Cells:
* Top Left: Telophase
* Top Middle: Metaphase
* Top Right: Cytokinesis
* Bottom Left: Prophase
* Bottom Middle: Anaphase
* Bottom Right: Interphase