06.02 Plant Cells and Tissues

Summary submission

Plants they take carbon dioxide out of the air and convert it into wonderful fresh pure oxygen for us to breathe. There also way cooler than us because, unlike us and every other animal on the planet. They don't require all kinds of liquid to keep them going. The only thing plants need to make themselves a delicious feast is sunlight and water. Just sunlight and water. Every thing you ever eat in your life is either made from plants, or from something that ate plants. The earliest land plant fossil dates back more than 400 million years ago. These plants where lycophytes. Which reproduce by making a bunch of spores. Some lycophytes evolve into scale trees. Which are know extinct. Angiosperms or plants that use flowers to reproduce. Plant and animal cells are actually pretty similar. There called eukaryotic cells. They have a karnel. And the Karnel is the nucleus. Eukaryotic cells also have organelles and there suspended in the cytoplasm. The cell wall of plants are mainly made up of cellulose and lignin.

They differentiate into three main tissue types: dermal, vascular, and ground tissue. Each plant organ roots, stems, leaves contains all three tissue types: Dermal tissue covers and protects the plant, and controls gas exchange and water absorption in roots.