2 LEARNING OBJECTIVESUnderstand the basic structure and function (job) of the tissues, organs, and organ systems of plantsConsider the similarities between animal systems and plant systems
3 Plant CELLS (review)Have all the same basic parts as animals EXCEPT also have a CELL WALL and CHLOROPLASTSLarger vacuoles for storing waterUsually have a more square shape
4 Plant TISSUESTissues = cells that are working in a team to do the same job (function)
5 Xylem & Phloem Tissue Are the “circulatory system” of the plant Both are TUBES used for transport
6 Usually xylem tubes are larger (in diameter) Xylem & Phloem TissueXylem (pronounced zi-lem) tissue is made of tubes that carry WATER and MINERALS(*usually upward from the roots to the rest of the plant)Usually xylem tubes are larger (in diameter)
7 Xylem & Phloem TissuePhloem (pronounced flo- em) tissue is made of tubes that carry FOOD (or SUGARS)(*usually downward from the leaves to the rest of the plant)Phloem Tube
8 a vein (made of xylem & phloem tissue) Form the “veins” in leavesAlso called “vascular” tissueEach line =a vein (made of xylem & phloem tissue)
17 LEAVES Jobs of Leaves Take in sunlight to make food (photosynthesis) Chloroplasts are the organelle that make this possible in plant cells
18 LEAVESChlorophyll is the molecule in green parts of plants that uses the energy in sunlight to turn water (H2O) and carbon dioxide gas (CO2) into sugar (glucose— C6H12O6) and oxygen gas (O2). This process is called photosynthesis.
19 LEAVESLeaves come in many sizes and shapes; they are often used to help identify plants.Plant spines (like cactus spines) are actually modified leaves
20 Label your diagram as we go! (Add the numbers and arrows!) LEAVES2A leaf is made of many layers that are sandwiched between two layers of tough skin cells (called the epidermis). Label as #1The epidermis also secretes a waxy substance called the cuticle (2). These layers protect the leaf from insects, bacteria, and other pests.11
21 LEAVES4Among the epidermal cells are pairs of sausage- shaped guard cells (3). Each pair of guard cells forms a pore (called stoma; the plural is stomata-4).Gases enter and exit the leaf through the stomata.33
22 LEAVESMost food production takes place in mesophyll cells. Gas exchange occurs in the air spaces between the oddly shaped cells of the spongy mesophyll (5).5
23 LEAVESVeins (6) support the leaf and are filled with vessels that transport food, water, and minerals to the plant through branches.6
24 LEAVES video clips Photosynthesis by Brainpop Autumn Leaves by BrainpopLeaves Video Clip-Discovery Channel
25 FLOWERSJobs of Flowersreproductive system of seed plants
26 FLOWERSPETALSParts of the flower include:petals
27 FLOWERSParts of the flower include:sepalsSEPALS
28 FLOWERS pistil (the female reproductive organs) Parts of the flower include:pistil (the female reproductive organs)
29 FLOWERS stamens (the male reproductive organs). Parts of the flower include:stamens (the male reproductive organs).
30 FLOWERSCan you identify the male and female parts of this flower?
31 SEEDSFlowers produce fruits, which grow seeds that can mature into new plants