Animal and Plant Cells Worksheet for Students to Identify and Label Cell Structures.

Let's solve the worksheet step by step.

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1. Identify and Label the Cells

We are given two diagrams:

#### Left Diagram:
- It has a round shape.
- It has a cell membrane (outer boundary), but no cell wall.
- It contains mitochondria, nucleus, cytoplasm, and other organelles.
- It does not have chloroplasts or a large central vacuole.

✔ This is an animal cell.

#### Right Diagram:
- It has a rectangular/box-like shape due to a rigid outer layer.
- It has a cell wall (green outer layer).
- It has chloroplasts (green oval structures) – used for photosynthesis.
- It has a large central vacuole.
- It also has a nucleus, mitochondria, and cytoplasm.

✔ This is a plant cell.

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Now, let’s label the parts in both diagrams using the words:
- Nucleus
- Mitochondria
- Cell wall
- Cell membrane
- Cytoplasm
- Chloroplast

#### Left Diagram (Animal Cell):
- The central structure with a dark spot → Nucleus
- The small oval green structures → Mitochondria
- The pinkish area surrounding the nucleus → Cytoplasm
- The outer boundary → Cell membrane
- (No chloroplasts or cell wall)

#### Right Diagram (Plant Cell):
- The outer green layer → Cell wall
- The outer transparent layer just inside the cell wall → Cell membrane
- The large green oval structures → Chloroplasts
- The central purple structure → Nucleus
- The large clear space → Vacuole (not listed, but implied)
- The small brown/orange structures → Mitochondria
- The fluid-filled area → Cytoplasm

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✔ Answers for Part 1:

- This is an animal cell.
- This is a plant cell.

Then label each part accordingly.

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2. Match the Parts to Their Functions

We are given these terms:
- NUCLEUS
- MITOCHONDRIA
- CHLOROPLAST
- CELL MEMBRANE
- CELL WALL
- CYTOPLASM

Now match them to the functions:

#### • This is responsible for controlling what goes in and out of the cell.
→ CELL MEMBRANE
✔️ The cell membrane regulates the movement of substances in and out of the cell.

#### • It’s where most of reaction take place. It’s also responsible for giving the cell its shape.
→ CYTOPLASM
✔️ The cytoplasm is the gel-like substance where many cellular reactions occur. In animal cells, it helps maintain shape; in plant cells, the cell wall provides rigidity.

> Note: While the cell wall gives structural support in plant cells, the cytoplasm is involved in metabolic reactions and contributes to shape in animal cells. So "cytoplasm" fits best here.

#### • This part holds all of the DNA.
→ NUCLEUS
✔️ The nucleus contains the genetic material (DNA).

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✔ Final Answers for Part 2:

- CELL MEMBRANE – controls what goes in and out.
- CYTOPLASM – site of reactions and helps give shape.
- NUCLEUS – holds all the DNA.

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✔ Complete Worksheet Answers:

#### Part 1:
- Left diagram: an animal cell
- Label: Nucleus, Mitochondria, Cytoplasm, Cell membrane
- Right diagram: a plant cell
- Label: Nucleus, Mitochondria, Chloroplast, Cell wall, Cell membrane, Cytoplasm

#### Part 2:
- CELL MEMBRANE – controls what goes in and out.
- CYTOPLASM – site of reactions and gives shape.
- NUCLEUS – holds all the DNA.

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Let me know if you'd like a printable version or a labeled diagram!