Seeds dispersal interactive worksheet - Free Printable

Problem Analysis:

The task involves understanding the concept of seed dispersal and answering questions related to it. The worksheet provides multiple-choice questions and matching exercises to test knowledge about how seeds are dispersed and why they need to travel away from their parent plants.

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Solution:

#### 1) Seed dispersal means:
- Question: What does seed dispersal mean?
- Options:
- get close to the mother plant.
- go away from the mother plant.

Answer: go away from the mother plant.

Explanation: Seed dispersal is the process by which seeds are spread away from the parent plant. This helps prevent competition for resources (like light, water, and nutrients) between the parent plant and its offspring.

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#### 2) Plants disperse their seeds by:
- Question: How do plants disperse their seeds?
- Options:
- Wind.
- Water.
- Animals.
- Airplanes.
- Wood.

Answer: Wind, Water, Animals.

Explanation: Seeds can be dispersed by natural agents such as wind (e.g., dandelion seeds), water (e.g., coconuts floating on water), and animals (e.g., birds eating fruits and dropping seeds). "Airplanes" and "Wood" are not natural methods of seed dispersal.

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#### 3) Seeds need to travel away from their mother plants to:
- Question: Why do seeds need to travel away from their mother plants?
- Options:
- have better chance to eat.
- have better chance to drink.
- have better chance to germinate.

Answer: have better chance to germinate.

Explanation: Seeds need to move away from their parent plants to avoid competition for resources and to find suitable conditions for germination. This increases their chances of survival and growth.

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#### 4) Examples of seed dispersal:
- Task: Match the images with the correct method of seed dispersal.

##### Image 1: Acorns
- Description: Acorns are shown in the image.
- Method of Dispersal: Animals.
- Explanation: Squirrels, birds, and other animals often collect and bury acorns, which helps disperse them away from the parent tree.

##### Image 2: Maple seeds (Samara)
- Description: Maple seeds with wings are shown.
- Method of Dispersal: Wind.
- Explanation: The wing-like structures on maple seeds allow them to be carried by the wind over long distances.

##### Image 3: Coconuts
- Description: A coconut is shown.
- Method of Dispersal: Water.
- Explanation: Coconuts are buoyant and can float on water, allowing them to be dispersed by ocean currents to distant locations.

##### Image 4: Burrs
- Description: Burrs with hooks are shown.
- Method of Dispersal: Animals.
- Explanation: Burrs attach to the fur or feathers of animals, which carry them to new locations.

##### Image 5: Elephant scene
- Description: Elephants are shown in a field.
- Method of Dispersal: Animals.
- Explanation: Elephants eat fruits and disperse seeds through their droppings, helping plants spread.

##### Image 6: Wind-blown person
- Description: A person holding up a seed pod in the wind.
- Method of Dispersal: Wind.
- Explanation: This illustrates how wind can carry lightweight seeds over long distances.

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Final Answers:

1. Seed dispersal means: go away from the mother plant.
2. Plants disperse their seeds by: Wind, Water, Animals.
3. Seeds need to travel away from their mother plants to: have better chance to germinate.
4. Examples of seed dispersal:
- Acorns: Animals.
- Maple seeds: Wind.
- Coconuts: Water.
- Burrs: Animals.
- Elephants: Animals.
- Wind-blown person: Wind.

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Final Answer Box:

\[
\boxed{
\begin{array}{l}
1. \text{go away from the mother plant.} \\
2. \text{Wind, Water, Animals.} \\
3. \text{have better chance to germinate.} \\
4. \text{Acorns: Animals; Maple seeds: Wind; Coconuts: Water; Burrs: Animals; Elephants: Animals; Wind-blown person: Wind.}
\end{array}
}
\]