Cone-Bearing Plants and Seed Spreading

Cone-Bearing Plants

Some plants, like pine trees, make seeds in cones instead of flowers.

  • Male cones: These have pollen.

  • Female cones: These have eggs.

  • Animals and the wind help move pollen from the male cones to the female cones.

  • When seeds form in female cones, some drop to the ground to grow into new plants.

Pine trees in Florida include:

  • Loblolly pines

  • Slash pines

  • Sand pines
    Other cone-bearing plants in Florida are bald cypress trees and cycads.

Life Cycles of Plants

Every plant has a life cycle, which includes dying.

  • Some plants only live one year.

  • Other trees can live for thousands of years.

Spreading Seeds

After plants make seeds, the seeds need to find places to grow. There are many ways seeds spread:

  1. Some plants scatter their own seeds:

    • For example, peas grow inside a pod that bursts when it gets dry, making peas fall out to grow into new plants.

  2. Wind spreads seeds:

    • Dandelion seeds are light and float away in the wind.

    • The seeds of pine trees can also be spread by the wind.

  3. Animals help spread seeds:

    • Seeds can get stuck in animal fur or clothes and fall off in a new place.

    • For instance, squirrels move acorns (which are seeds from oak trees) from one place to another.

    • Some fruits that animals eat have seeds inside them. After the animals digest the fruit, the seeds are dropped in their waste.

  4. Water can scatter seeds:

    • Coconuts fall into the ocean and can float to find new land.

    • Mangrove seeds can also float until they reach a good spot to grow.

Discussion Question

How are the life cycles of an orange tree and a pine tree similar and different?