Seed Dispersal

Free sample questions, a clear explanation, and 5 practice skills with an AI tutor that guides without giving the answer away.

Seeds on a Super Adventure!

Have you ever wondered how a new tree can grow all by itself in the middle of a field? Plants can't walk or run, so how do their babies—the seeds—find a new place to live?

Imagine if you had to live your whole life right in your parents' house, never moving out. It would get super crowded! Plants feel the same way. They need their seeds to travel and find their own sunny spot with enough water and space to grow big and strong. This amazing journey is called seed dispersal!

How Do Seeds Travel?

Seeds are expert travelers! They have special features that help them move in different ways. It's like having a superpower!

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By Wind: Some seeds are super light and fluffy, like the white puffs of a dandelion. Whoosh! The wind picks them up like tiny parachutes and carries them far away. Other seeds, like maple seeds, have "wings" that make them spin like helicopters as they fall.
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By Animals: Sneaky seeds! Some seeds have tiny hooks or barbs that stick to an animal's fur (or your socks!) as they walk by. Later, the animal scratches or shakes, and the seed falls off in a new home. Other seeds are hidden inside yummy fruits. An animal eats the fruit, walks away, and poops out the seed later!
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By Water: Let's go for a swim! Seeds like coconuts are big but can float. They fall into a river or the ocean and drift along with the waves until they wash up on a new beach, ready to grow.

Key Takeaway!

A seed's structure (how it's built) helps its dispersal (how it travels). Fluffy parts catch the wind, sticky hooks grab onto fur, and air pockets help it float!

Your Turn, Plant Designer!

Imagine you are a giant flower that lives on a windy mountain. You need your seeds to travel to the valley below.

What would your super seed look like? Would it have extra-large wings? A sticky, sweet coating to attract a bird? Maybe it's designed to roll down the hill like a little ball? Draw your seed and explain its amazing travel plan!

Sample questions

1. Which part of a plant can grow into a brand new plant?

○ A leaf

✓ A seed

○ A stem

○ A flower

Answer: A seed — Imagine planting something small in the soil to get a big plant later.

2. Look at these things. Which one is a seed that can grow?

○ A small rock

○ A bird's feather

✓ A bean

○ A piece of wood

Answer: A bean — Think about what you might plant in a garden to grow a new plant to eat.

3. What is the most important job of a seed?

✓ To grow into a new plant

○ To help the plant stand up tall

○ To make sweet fruit

○ To catch sunlight

Answer: To grow into a new plant — Think about what a seed *becomes*.

Skills in this topic

Define a seed as the part of a plant that can grow into a new plant.
Identify different ways seeds are dispersed (e.g., wind, water, animals, bursting).
Match different types of seeds to their dispersal methods (e.g., dandelion to wind, burdock to animals).
Investigate how the structure of a seed helps it to be dispersed (e.g., wings, hooks, buoyancy).
Imagine you are a plant. Design a new type of seed and explain how its features would help it travel far away from you.

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