Solved WORKSHEET: Seed Dispersal Lab Lab Instructor: Lab Day ... - Free Printable

Problem Overview:

The task involves completing a worksheet for a "Seed Dispersal Lab." The goal is to identify and analyze the seed dispersal mechanisms of two different plant species. You need to:

1. Identify the species of plants.
2. Determine the type of dispersal mechanism (water, wind, animal, or mechanical).
3. Draw and label the dispersal structure of each plant.
4. Explain how the fruit or seed might get dispersed.

Solution Approach:

To solve this problem, follow these steps for each plant:

#### Step 1: Identify the Species of Plant
- Choose two different plant species that you are familiar with or have observed in your environment.
- Write down the names of the plants in the provided spaces.

#### Step 2: Determine the Type of Dispersal Mechanism
- Research or observe the plant to determine how its seeds or fruits are dispersed.
- Common types of dispersal mechanisms include:
- Water: Seeds float on water (e.g., coconuts, water lilies).
- Wind: Seeds have wings, parachutes, or are lightweight (e.g., dandelions, maple trees).
- Animal: Seeds are eaten by animals and later excreted (e.g., berries, acorns).
- Mechanical: Seeds are ejected from the plant (e.g., impatiens, squirting cucumber).

#### Step 3: Draw and Label the Dispersal Structure
- Sketch the fruit or seed of the plant.
- Label the key structures that aid in dispersal (e.g., wings, hooks, spines, parachutes).

#### Step 4: Explain How the Fruit Might Get Dispersed
- Provide a brief explanation of the dispersal process based on the identified mechanism.

---

Example Solution for Two Plants

#### Plant 1: Dandelion (Taraxacum officinale)

1. Species of Plant: Dandelion (Taraxacum officinale)
2. Type of Dispersal: Wind
3. Drawing (with labeled dispersal structure):
- Draw a dandelion seed head with multiple seeds attached to feathery parachutes.
- Label the "parachute" structure (pappus) that helps the seed float in the wind.
4. How Might It Work?:
- The dandelion produces seeds with feathery parachutes called pappi.
- When the wind blows, the pappi catch the air, allowing the seeds to be carried over long distances.
- This mechanism ensures widespread dispersal and colonization of new areas.

---

#### Plant 2: Coconut (Cocos nucifera)

1. Species of Plant: Coconut (Cocos nucifera)
2. Type of Dispersal: Water
3. Drawing (with labeled dispersal structure):
- Draw a coconut fruit with a thick, buoyant outer layer.
- Label the "buoyant husk" that allows it to float.
4. How Might It Work?:
- Coconuts grow near coastal areas and fall into the ocean.
- The thick, fibrous husk makes the fruit buoyant, allowing it to float on water.
- Ocean currents carry the coconut to distant shores, where it can germinate and grow if conditions are suitable.

---

Final Answer:

Here is the completed worksheet for the two example plants:

#### Plant 1: Dandelion (Taraxacum officinale)
- Species of Plant: Dandelion (Taraxacum officinale)
- Type of Dispersal: Wind
- Drawing (with labeled dispersal structure):
- [Sketch of dandelion seed head with labeled "pappus"]
- How Might It Work?:
- The feathery parachutes (pappi) catch the wind, enabling the seeds to be carried over long distances.

#### Plant 2: Coconut (Cocos nucifera)
- Species of Plant: Coconut (Cocos nucifera)
- Type of Dispersal: Water
- Drawing (with labeled dispersal structure):
- [Sketch of coconut fruit with labeled "buoyant husk"]
- How Might It Work?:
- The thick, fibrous husk makes the coconut buoyant, allowing it to float on water and be carried by ocean currents to distant shores.

---

Final Answer Box:

\boxed{
\begin{array}{|c|c|}
\hline
\textbf{Plant 1: Dandelion (Taraxacum officinale)} & \textbf{Plant 2: Coconut (Cocos nucifera)} \\
\hline
\text{Species of Plant: Dandelion (Taraxacum officinale)} & \text{Species of Plant: Coconut (Cocos nucifera)} \\
\text{Type of Dispersal: Wind} & \text{Type of Dispersal: Water} \\
\text{Drawing (with labeled dispersal structure): [Sketch of dandelion seed head with labeled "pappus"]} & \text{Drawing (with labeled dispersal structure): [Sketch of coconut fruit with labeled "buoyant husk"]} \\
\text{How Might It Work?: The feathery parachutes (pappi) catch the wind, enabling the seeds to be carried over long distances.} & \text{How Might It Work?: The thick, fibrous husk makes the coconut buoyant, allowing it to float on water and be carried by ocean currents to distant shores.} \\
\hline
\end{array}
}