儿童英语 走进植物王国_Plant_Kingdom_Part_One.ppt

Photosynthesis: * * The Plant Kingdom 4 General Characteristics: 3) They have chloroplasts 2) Plants make their own food by photosynthesis 1) Multi-celled organisms organelle where photosynthesis takes place chloroplasts- they’re green because they have chlorophyll the chemical that gives plants their green color Chlorophyll- traps light energy for photosynthesis Chloroplast Chloroplast 4 General Characteristics Cont’d 4) Plant cells have cell walls (animal cells do not) stiff cell walls give structure to each cell also supports the plant made of cellulose have holes through which cells share cytoplasm pass nutrients sugars, water, and hormones cells walls releases oxygen Process in which plants use water, carbon dioxide, and energy from the sun to make food Photosynthesis - only occurs in the chloroplasts Prefix photo means: Light Root word synthesis means: to make What process is illustrated here? 6CO2 + 6H2O + light energy = C6H12O6 + 6O2 Photosynthesis How are plants organized? PLANTS Seedless Plants Seed Plants Angiosperms Gymnosperms Ferns related plants Mosses related plants Vascular Nonvascular 2 Main Types of Plants 2) Nonvascular Plants 1) Vascular Plants PLANTS Vascular Nonvascular broken into 2 more subgroups called: a) seedless plants b) seed plants not broken into subgroups Vascular Plants Vascular Plants- plants that have tube-like cells in their roots, stems, leaves that carry H2O and nutrients Vascular comes from the Latin word “vasculum” which means “vessel” roots, stems, and leaves of a plant are all called organs they lose their leaves like a pet sheds Vascular Plants: 3 organs and their jobs Vascular Plant Organs:( roots, stems, leaves) ROOTS- anchors the plant into the ground STEMS- LEAVES- place where all of the chloroplasts are located takes in H2O nutrients directly from the soil carry water to all parts of the plant holds the leaves up to the sunlight Vascular Plants: 2 Types of Tubes tube-like cells that carry water dissolved m