Seed Dispersal Mechanisms and Characteristics

The video explores the diverse strategies plants use for seed dispersal, ensuring reproductive success. It highlights the challenges seeds face when growing near parent plants and explains various dispersal methods, including animal-assisted, mechanical, wind, and water dispersal. The video emphasizes the importance of these strategies in helping seeds find suitable conditions for growth.

Why can't plants simply drop their seeds to grow next to them?

• Because seeds need to be in water to grow.

• Because seeds need to be planted by humans.

• Because the parent plant absorbs all the resources.

• Because seeds need sunlight to germinate.

How do animals help in the dispersal of seeds found in fruits?

• By carrying the seeds in their mouths.

• By eating the fruits and excreting the seeds elsewhere.

• By eating the seeds and digesting them.

• By planting the seeds in the ground.

What role do squirrels play in seed dispersal?

• They plant seeds in specific locations.

• They bury seeds and forget some, allowing them to grow.

• They carry seeds to their nests.

• They eat all the seeds they find.

What inspired the invention of Velcro?

• The smooth surface of acorns.

• The hooks on burdock seeds.

• The rolling motion of seeds.

• The flight of dandelion seeds.

How do acorns use gravity for seed dispersal?

• They are carried by animals.

• They are washed away by rain.

• They roll away from the parent plant after falling.

• They are blown away by the wind.

What is a characteristic of seeds that use wind for dispersal?

• They are buried by animals.

• They are sticky and attach to animals.

• They have structures that help them float.

• They are heavy and fall quickly.

What is the purpose of the feathery structures on dandelion seeds?

• To make them heavier.

• To help them float in water.

• To help them fly in the wind.

• To attach to animal fur.

What are helicopter seeds, and which tree produces them?

• They are seeds that stick to animals, produced by burdock plants.

• They are seeds that spin in the air, produced by maple trees.

• They are seeds that roll on the ground, produced by oak trees.

• They are seeds that float on water, produced by water lilies.

How do water lilies disperse their seeds?

• By gravity.

• By water movement.

• By wind.

• By animals.

What is a common feature of seeds dispersed by water?

• They are sticky.

• They are very light.

• They have a wood-like covering.

• They are brightly colored.