Internal and External Structures of Plants Worksheet featuring a labeled flower diagram and matching exercises.

Let’s go step by step to make sure everything is correct.

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Part 1: Fill in the table with flower structures

We are given a diagram of a flower with numbered parts (1 through 11), and we need to match each number to the correct structure name. The worksheet already gives us some answers, including that #8 = Stem.

Looking at standard flower anatomy:

- Pistil is the female part — usually includes stigma, style, ovary.
- So if #1 is labeled as “Pistil”, it likely points to the whole central female structure.
- Then #3 (Stigma) is the top sticky part that receives pollen.
- #6 (Style) is the tube connecting stigma to ovary.
- #2 (Ovary) is the base where ovules are held.
- #9 (Ovule) is inside the ovary — becomes seed after fertilization.

- Stamen is the male part — includes anther and filament.
- #7 is labeled “Stamen” → this should be the whole male unit.
- #5 (Filament) is the stalk holding up the anther.
- #11 (Anther) is the tip that makes pollen.

- Other parts:
- #4 (Petal) — colorful part to attract pollinators.
- #10 (Sepal) — green leaf-like part under petal, protects bud.
- #8 (Stem) — supports the flower; already given.

All labels provided in the table match standard botanical terms for those positions. Let’s verify one more time:

→ #1 = Pistil ✔ (whole female reproductive organ)
→ #2 = Ovary ✔ (base of pistil)
→ #3 = Stigma ✔ (top of pistil)
→ #4 = Petal ✔ (colorful outer layer)
→ #5 = Filament ✔ (stalk of stamen)
→ #6 = Style ✔ (middle of pistil)
→ #7 = Stamen ✔ (whole male organ)
→ #8 = Stem ✔ (given)
→ #9 = Ovule ✔ (inside ovary)
→ #10 = Sepal ✔ (protective green part below petals)
→ #11 = Anther ✔ (pollen-producing part on top of filament)

✔ All matches are correct as shown in the table.

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Part 2: Match plant structure with its function

We have five functions and five structures: Root, Stem, Leaves, Seed, Flower.

Let’s go line by line:

1. “Part from which baby plant grows and is present in the fruit”
→ That’s the seed. Seeds contain the embryo (baby plant). Fruits often enclose seeds. ✔️

2. “Carry food and water to all other parts”
→ That’s the stem. It has xylem (water/minerals up) and phloem (food down/up). ✔️

3. “The part that produce seeds or fruits”
→ That’s the flower. After pollination, flowers develop into fruits containing seeds. ✔️

4. “It absorbs water and minerals from the soil”
→ That’s the root. Roots take in water and nutrients from soil. ✔️

5. “Prepare food for the plant”
→ That’s the leaf. Leaves do photosynthesis using sunlight, CO₂, and water to make glucose (food). ✔️

Note: In the last row, the answer says “leaf” — but the option listed was “Leaves”. Since “leaf” is singular and refers to the same structure, it’s acceptable. But technically, since the header says “Leaves”, maybe they expect plural? However, in biology, we often say “the leaf prepares food” even when referring to the general structure. Given the context, “leaf” is fine here.

Wait — let’s check the original table again:

In Part 2, the matching table shows:

| Function | Plant Structure |
|-----------------------------------------------|------------------|
| Part from which baby plant grows... | seed |
| Carry food and water... | stem |
| The part that produce seeds or fruits | flower |
| It absorbs water and minerals from the soil | root |
| Prepare food for the plant | leaf |

But the options given above the table were:
Root, Stem, Leaves, Seed, Flower

So “Leaves” is plural, but the answer written is “leaf”. Is that okay?

Actually, yes — because “leaf” is just the singular form of “leaves”, and both refer to the same organ. In many textbooks, you’ll see “the leaf performs photosynthesis.” So unless the question specifically requires exact word matching (which it doesn’t seem to), “leaf” is correct.

However, to be precise, if the instruction says “match the plant structure” and lists “Leaves” as the option, then perhaps we should write “leaves” instead of “leaf”? But looking at how the others are written — “seed”, “stem”, “flower”, “root” — all singular — so “leaf” fits better stylistically.

Also note: in the third row, it says “produce seeds or fruits” — grammatically, it should be “produces”, but again, not our job to fix grammar — just match correctly.

✔ All matches are logically correct.

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Final verification:

No math involved — just biological knowledge and matching.

Everything checks out.

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Final Answer:
The completed tables are already correctly filled in the worksheet. No changes needed.

For clarity, here's the confirmed correct pairing:

Part 1 – Flower Structures:
1 → Pistil
2 → Ovary
3 → Stigma
4 → Petal
5 → Filament
6 → Style
7 → Stamen
8 → Stem
9 → Ovule
10 → Sepal
11 → Anther

Part 2 – Functions & Structures:
- Baby plant grows from → seed
- Carries food/water → stem
- Produces seeds/fruits → flower
- Absorbs water/minerals → root
- Prepares food → leaf (or leaves — either is acceptable based on context)