Seed Scattering Sort Out (Year 3) | CGP Plus - Free Printable

Problem Overview:

The task is to categorize the plants shown in the image based on how they disperse their seeds. The three methods of seed dispersal are:

1. By wind
2. By animals
3. By explosion

We need to analyze each plant and determine which method it uses for seed dispersal.

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Plants Shown in the Image:

1. Sycamore
2. Himalayan balsam
3. Dandelion
4. Green foxtail grass
5. Bulrush
6. Burdock
7. Plum
8. Lupine

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Analysis of Each Plant:

#### 1. Sycamore
- Seed Structure: Sycamore seeds have long, wing-like structures (samarae).
- Dispersal Method: These wings help the seeds glide through the air when released from the tree.
- Conclusion: By wind

#### 2. Himalayan balsam
- Seed Structure: Himalayan balsam has pods that burst open when ripe.
- Dispersal Method: The explosion of the pod scatters the seeds over a wide area.
- Conclusion: By explosion

#### 3. Dandelion
- Seed Structure: Dandelion seeds have feathery parachutes (pappus) attached to them.
- Dispersal Method: The pappus allows the seeds to be carried by the wind.
- Conclusion: By wind

#### 4. Green foxtail grass
- Seed Structure: Green foxtail grass has small, dry seeds covered in tiny barbs.
- Dispersal Method: The barbs attach to the fur or feathers of animals, helping the seeds travel.
- Conclusion: By animals

#### 5. Bulrush
- Seed Structure: Bulrush produces numerous small, lightweight seeds.
- Dispersal Method: The seeds are easily blown away by the wind.
- Conclusion: By wind

#### 6. Burdock
- Seed Structure: Burdock seeds have hooked bristles.
- Dispersal Method: These hooks attach to the fur or clothing of animals, aiding in seed dispersal.
- Conclusion: By animals

#### 7. Plum
- Seed Structure: Plums produce fleshy fruits containing seeds.
- Dispersal Method: Animals eat the fruit and later excrete the seeds, spreading them.
- Conclusion: By animals

#### 8. Lupine
- Seed Structure: Lupine seeds are contained in pods.
- Dispersal Method: When the pods dry out, they split open explosively, scattering the seeds.
- Conclusion: By explosion

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Filling the Table:

| By Wind | By Animals | By Explosion |
|------------------|------------------|-------------------|
| Sycamore | Green foxtail grass | Himalayan balsam |
| Dandelion | Burdock | Lupine |
| Bulrush | Plum | |

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Additional Plants:

You can add other plants to the table based on their seed dispersal methods. Here are some examples:

- Maple: Seeds with wings (by wind)
- Oak: Acorns (by animals)
- Impatiens: Pods that explode (by explosion)

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Final Answer:

\[
\boxed{
\begin{array}{|c|c|c|}
\hline
\text{By Wind} & \text{By Animals} & \text{By Explosion} \\
\hline
\text{Sycamore} & \text{Green foxtail grass} & \text{Himalayan balsam} \\
\text{Dandelion} & \text{Burdock} & \text{Lupine} \\
\text{Bulrush} & \text{Plum} & \\
\hline
\end{array}
}
\]