This is a bud. 

When it opens it will be a flower.  

This plant is called a daffodil.

The stem helps the plant stand up.

The roots take up water from the soil. They help the plant stand up too. 

Leaves make food for the plant.  

Leaves need sunlight, air and water to make food for the plant.  This is called photosynthesis.

The stem takes water and food to the flowers and leaves.

This is a flower.  Flowers are made of petals.

The bright colour attracts insects like bees.  

Insects eat the nectar inside the flower.

These are called Stamen.  They make pollen.  Insects or the wind take the pollen to a different flower. 

The pollen sticks to the stigma.  This is called pollination.

All plants have seeds.

The seeds are below the petals.

When the flower dies the seeds are left.  The seeds will grow into a new plant.

See a different plant