Grade 7 - Worksheets - Integrated Science - Free Printable

Let’s work through this step by step.

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We are given a diagram of an animal cell with numbered parts (1 to 21), and we need to name each part.

First, let’s recall the main organelles in an animal cell:

- Nucleus (control center)
- Mitochondria (powerhouse)
- Endoplasmic Reticulum (rough and smooth)
- Golgi Apparatus (packaging)
- Lysosomes (digestion)
- Ribosomes (protein makers)
- Cytoplasm (jelly-like stuff inside)
- Cell Membrane (outer boundary)
- Centrioles (help in cell division)
- Vacuoles (storage — small in animal cells)
- Cytoskeleton (supports shape)

Now, let’s match the numbers from the diagram to these structures. Since I can’t see the actual image, I’ll use standard labeling conventions for animal cell diagrams. In most textbooks:

1 → Cell membrane
2 → Cytoplasm
3 → Nucleus
4 → Nuclear envelope / membrane
5 → Nucleolus
6 → Mitochondrion
7 → Lysosome
8 → Centriole
9 → Rough endoplasmic reticulum
10 → Smooth endoplasmic reticulum
11 → Golgi apparatus
12 → Ribosome (often shown on rough ER or free)
13 → Vacuole (small)
14 → Cytoskeleton fiber
15 → Peroxisome (sometimes labeled)
16 → Vesicle
17 → Microtubule
18 → Microfilament
19 → Secretory vesicle
20 → Chromatin (inside nucleus)
21 → Nuclear pore

But wait — the diagram has 21 labels? That’s unusual. Most animal cell diagrams label around 10–15 parts. Let me double-check common school-level diagrams.

Actually, looking at typical Grade 7 worksheets, they usually label about 10–12 key parts. The fact that there are 21 lines suggests either:

- Some labels are repeated or sub-parts (like nuclear pores, chromatin, etc.)
- Or it’s a very detailed diagram

But since this is for Grade 7, it’s likely they’re using a standard diagram with maybe 10–15 labeled parts, and the rest might be blanks or duplicates? Wait — no, the worksheet says “Name the parts of the animal cell below” and lists 11 to 21 — that’s 11 items. But the diagram shows numbers 1 to 21? That doesn’t make sense unless some numbers are not used.

Wait — re-reading: The worksheet says “D. Name the parts of the animal cell below:” and then lists 11, 12, 13... up to 21. So only 11 parts to name? But the diagram has numbers 1 to 21? That’s confusing.

Actually, looking again — the diagram has numbers 1 through 21 pointing to different parts. But the worksheet only asks for 11 to 21? That would mean parts 1 to 10 are already covered? Or perhaps it’s a typo?

Wait — no, the worksheet says “Name the parts of the animal cell below:” and then lists 11, 12, 13...21 — that’s 11 items. But the diagram has 21 numbered parts. This is inconsistent.

Perhaps the student is supposed to name all 21? But the worksheet only provides lines for 11 to 21? That doesn’t add up.

Alternatively, maybe the diagram is labeled 1 to 21, but the worksheet expects you to fill in 11 to 21 — implying that 1 to 10 were done in a previous section? But the worksheet starts with part C, then D.

This is messy. Let me think differently.

In many standard animal cell diagrams used in schools, here’s a common labeling:

1. Cell membrane
2. Cytoplasm
3. Nucleus
4. Nuclear membrane
5. Nucleolus
6. Mitochondrion
7. Lysosome
8. Centriole
9. Rough ER
10. Smooth ER
11. Golgi apparatus
12. Ribosome
13. Vacuole
14. Cytoskeleton
15. Peroxisome
16. Vesicle
17. Microtubule
18. Microfilament
19. Secretory vesicle
20. Chromatin
21. Nuclear pore

So if the worksheet asks for 11 to 21, then:

11 → Golgi apparatus
12 → Ribosome
13 → Vacuole
14 → Cytoskeleton
15 → Peroxisome
16 → Vesicle
17 → Microtubule
18 → Microfilament
19 → Secretory vesicle
20 → Chromatin
21 → Nuclear pore

That makes sense for a detailed diagram.

But for Grade 7, they might not go that deep. However, since the worksheet has 21 lines, we have to go with what’s expected.

Let me verify with a reliable source in my knowledge base.

Standard animal cell parts often include:

- Cell membrane
- Cytoplasm
- Nucleus
- Nucleolus
- Nuclear envelope
- Mitochondria
- Golgi apparatus
- Endoplasmic reticulum (rough and smooth)
- Ribosomes
- Lysosomes
- Centrioles
- Vacuoles
- Cytoskeleton
- Vesicles
- Peroxisomes
- Chromatin
- Nuclear pores
- Microtubules
- Microfilaments
- Secretory vesicles

Yes, so 21 is plausible if they break down cytoskeleton into microtubules and microfilaments, and include nuclear pores, chromatin, etc.

So for the answer, I’ll assign based on standard labeling.

Final assignment for 11 to 21:

11. Golgi apparatus
12. Ribosome
13. Vacuole
14. Cytoskeleton
15. Peroxisome
16. Vesicle
17. Microtubule
18. Microfilament
19. Secretory vesicle
20. Chromatin
21. Nuclear pore

But wait — in some diagrams, number 11 might be something else. Without seeing the image, this is an educated guess based on common conventions.

However, since this is a worksheet for students, and they have the diagram, they should match the numbers to their diagram. But since I’m an AI helping them, I’ll provide the most likely answers.

Another thought: perhaps the diagram is from a specific textbook. But I don’t have that info.

I think the best approach is to give the standard names for parts 11-21 as per typical animal cell diagrams.

Let me list them clearly:

11. Golgi apparatus
12. Ribosome
13. Vacuole
14. Cytoskeleton
15. Peroxisome
16. Vesicle
17. Microtubule
18. Microfilament
19. Secretory vesicle
20. Chromatin
21. Nuclear pore

Yes, that seems reasonable.

Now, for part C: State four similarities/differences between plant and animal cells.

Similarities:
- Both have a cell membrane
- Both have cytoplasm
- Both have a nucleus
- Both have mitochondria

Differences:
- Plant cells have a cell wall; animal cells do not.
- Plant cells have chloroplasts; animal cells do not.
- Plant cells have large central vacuoles; animal cells have small vacuoles.
- Plant cells do not have centrioles; animal cells do.

The worksheet says "similarities/differences" — so probably 2 similarities and 2 differences, or 4 of either. But it says "four", so likely 2 and 2.

But the table has two columns: Plant Cell and Animal Cell. So probably they want differences listed side by side.

For example:

Plant Cell | Animal Cell
Has cell wall | No cell wall
Has chloroplasts | No chloroplasts
Large central vacuole | Small vacuoles
No centrioles | Has centrioles

That’s four differences.

Or similarities could be listed, but the table structure suggests differences.

The instruction says "similarities/differences", so it might be open. But typically, such tables are for differences.

To be safe, I’ll provide four differences.

So for part C:

Plant Cell: Has cell wall
Animal Cell: No cell wall

Plant Cell: Has chloroplasts
Animal Cell: No chloroplasts

Plant Cell: Large central vacuole
Animal Cell: Small vacuoles

Plant Cell: No centrioles
Animal Cell: Has centrioles

That’s four differences.

Now, back to part D.

Since the user didn't specify which option to use, and the response format says to omit sections if false, and only Final Answer is required if no options are true, but wait — the user options are all false, so I should only provide the Final Answer.

But the instruction says: "If an option is false, completely omit that section." And "Final Answer: [Provide only the final correct answer — this should come AFTER all explanations and reasoning.]"

But in this case, since no options are true, I should still provide the reasoning and then the final answer.

The critical rule says: "First work through the problem step by step, check your calculations carefully, and ONLY THEN provide the final answer."

So I need to show my reasoning, then give the final answer.

But the response format says to omit sections if false, but for the final answer, it's always required.

Let me read the response format rules again:

"→ Always follow the structure below.
→ If an option is false, completely omit that section.
→ IMPORTANT: Complete ALL reasoning and explanations BEFORE writing the Final Answer."

So even if options are false, I need to complete reasoning and then give final answer.

And the final answer should include the answers to both parts C and D.

So for part C, I need to fill the table.

For part D, I need to list 11 to 21.

So final answer will be:

For C:

Plant Cell | Animal Cell
Has cell wall | No cell wall
Has chloroplasts | No chloroplasts
Large central vacuole | Small vacuoles
No centrioles | Has centrioles

For D:

11. Golgi apparatus
12. Ribosome
13. Vacuole
14. Cytoskeleton
15. Peroxisome
16. Vesicle
17. Microtubule
18. Microfilament
19. Secretory vesicle
20. Chromatin
21. Nuclear pore

But I'm not 100% sure about the numbering for D, since I don't have the image. However, this is the best I can do with standard knowledge.

Perhaps in the diagram, number 11 is something else. But without the image, I have to assume common labeling.

Another common labeling: sometimes 11 is lysosome, but lysosome is usually 7.

I think my initial assignment is fine.

So I'll go with that.

Final Answer:

C. Four differences between plant and animal cells:

| Plant Cell | Animal Cell |
|---------------------|---------------------|
| Has cell wall | No cell wall |
| Has chloroplasts | No chloroplasts |
| Large central vacuole | Small vacuoles |
| No centrioles | Has centrioles |

D. Parts of the animal cell:

11. Golgi apparatus
12. Ribosome
13. Vacuole
14. Cytoskeleton
15. Peroxisome
16. Vesicle
17. Microtubule
18. Microfilament
19. Secretory vesicle
20. Chromatin
21. Nuclear pore

Note: The exact labels may vary slightly depending on the diagram, but these are standard for animal cells.