Plants!!!

Main Understandings describe how the surface area to volume ratio affects cell size and shape explain why, when a single-celled organism reaches a certain size, it requires a multicellular level of organization Explain that plants need specialized cells tissues and systems Describe the specialized parts of the leaf and what they do: epidermis including guard cells, palisade tissue cells, spongy tissue cells Understand how the parts of the leaf and phloem and xylem vascular tissue cells help photosynthesis

What you want to learn: Anemia Less red blood cells or less of the protein hemoglobin Both are essential for transporting oxygen As a result, can feel weak, tired, or lightheaded Depending on your type of anemia your diet can help Iron: spinach, tofu, lentils, prune juice Vitamin B12: meats, egg, dairy Folic Acid: bananas, bread, spinach, pasta, beans

Surface Area to Volume Ratio Cells need a high surface area to exchange nutrients with its surroundings Surface Area : Volume ratio shows how efficient cells are to perform diffusion As cells increase in size, they have a higher volume and less surface area for their volume. Therefore, their SA:V ratio is smaller, and they are less efficient at diffusion. When they get too big, they must divide Multicellular organisms have developed different mechanisms to transport nutrients and water.

How Multicellular Plants Transport Nutrients and Water Plants have special transport tissues, called vascular bundles. There are two types 1) Xylem transports water and minerals from the roots up towards the leaf for photosynthesis 2) Phloem transports sugars and other molecules all around the plant.

How We Color Flowers You may have noticed when you go to buy flowers for a special someone, that there are a wide range of cool bright colors. These unnatural colors are created using flower’s xylem system. You can put dye into the water and then it will travel into the petals changing the color.

How We Get Maple Syrup We get the sweet syrup from the maple tree Originally from the Aboriginals, we tap the tree to access the sweet sap

Parts of the Plant Leaf Video What do the palisade tissue cells do? What do the guard cells do? What is the role of the stomata? What do the spongy cells do within the plant? What does the cuticle do? https://youtu.be/co0JdqUlycg

Summary Label your diagram as we go Waxy coating which seals the leaf Contains chlorophyll for photosynthesis Lets CO2 in Allows for gas to move through Surrounded by Guard cells

Questions?