Example 1: Think of a sunflower. Its tall stem helps it stay upright and catch the sunlight.
Example 2: A rose plant has a thick stem that helps hold its beautiful flowers high, so we can see them.
Example 3: If you look at a broccoli plant, its strong stem lets it grow big and sturdy, making it easy for the leaves to catch the sun.
Fun Fact: Some plants have very thick stems, like cacti, which help store water for dry days!