On the next slide, a cluster of tiny, active cells appeared. "Right behind the helmet is the . These cells are the engines. They never stop splitting, creating the new life that pushes the root deeper."
As the presentation ended, Mr. Petrov handed out small magnifying glasses and sprouted beans. "The slides are over," he said with a wink. "Now, go find the 'helmets' and the 'hairs' yourselves." urok-prezentcija zony kornja 6 klass po biologii
"But how does it get so long?" asked Masha from the front row. On the next slide, a cluster of tiny, active cells appeared
The most popular slide came next. It looked like a fuzzy caterpillar. "This is the (or Maturation). Those 'hairs' you see aren't hair—they are Root Hairs. They increase the surface area so the plant can drink up every drop of water and mineral it can find. This is where the plant breathes and eats." They never stop splitting, creating the new life
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