Traveling seeds | 5th grade Science Worksheet | GreatSchools - Free Printable

Problem Analysis:

The task involves understanding how seeds are dispersed and identifying which seeds are dispersed by wind. The image provides background information about seed dispersal mechanisms, such as wind, animals, water, etc. We need to analyze the given options (blackberry, cherry, dandelion, pine cone) and determine which ones are dispersed by wind.

#### Key Points from the Background Information:
1. Seeds Dispersed by Wind: These seeds are lightweight and have structures like wings or parachutes that allow them to be carried by the wind.
2. Seeds Dispersed by Animals: These seeds are often enclosed in fruits or have hooks that attach to animals' fur or feathers.
3. Seeds Dispersed by Water: These seeds can float on water and are adapted to travel via rivers, streams, or oceans.

#### Given Options:
- Blackberry
- Cherry
- Dandelion
- Pine Cone

Step-by-Step Solution:

#### 1. Blackberry
- Blackberries are typically dispersed by animals. They grow in clusters and are consumed by birds and mammals. After being eaten, the seeds pass through the animal's digestive system and are deposited elsewhere.
- Conclusion: Not dispersed by wind.

#### 2. Cherry
- Cherries are also dispersed by animals. The fruit is eaten by birds and mammals, and the seeds are excreted in a new location.
- Conclusion: Not dispersed by wind.

#### 3. Dandelion
- Dandelions have feathery, parachute-like structures attached to their seeds. These structures allow the seeds to be easily carried by the wind over long distances.
- Conclusion: Dispersed by wind.

#### 4. Pine Cone
- Pine cones do not rely on wind for seed dispersal. Instead, they use gravity or animals (e.g., squirrels) to disperse their seeds. Some pine trees require fire to open their cones and release the seeds.
- Conclusion: Not dispersed by wind.

Final Answer:

- Blackberry: Not dispersed by wind.
- Cherry: Not dispersed by wind.
- Dandelion: Dispersed by wind.
- Pine Cone: Not dispersed by wind.

Explanation of How an Apple Seed Might Be Dispersed by Water:

While apples are primarily dispersed by animals (e.g., birds eat the fruit and excrete the seeds), apple seeds can also be dispersed by water under certain conditions. For example:
- If an apple falls into a river or stream, it may float downstream, and the seeds inside could eventually germinate after the fruit decomposes.
- This method is less common compared to animal dispersal but is possible in environments where water bodies are present.

Final Answer Box:

\[
\boxed{\text{Dandelion}}
\]