Transcript Slide 1
“Don’t make me read, make me understand “ www.makemegenius.com– Full of ingredients to make your child a genius. Copyright of www.makemegenius.com, for more videos ,visit us. Plant Parts and their Functions Copyright of www.makemegenius.com, for more videos ,visit us. Life Cycles of Plants • Annual-a plant that completes its life cycle in one year • Biennial-a plant that completes its life cycle in two years • Perennial-a plant that lives more than two years Copyright of www.makemegenius.com, for more videos ,visit us. Leaf Retention • Deciduous-loses leaves during the dormant season • Evergreen-keeps leaves and remains green year-round Copyright of www.makemegenius.com, for more videos ,visit us. Moisture in Plants • Turgid-plant is swollen or filled with moisture • Wilted-plant is limp because it does not have enough moisture Copyright of www.makemegenius.com, for more videos ,visit us. Plant Parts • • • • Leaves Stems Roots Flowers Copyright of www.makemegenius.com, for more videos ,visit us. Leaves-External • Petiole-leaf stalk or part that connects the leaf to the stem • Blade-the large, flat part of the leaf • Midrib-the large center vein • Veins-the structural framework of the leaf • Margin-the edge of the leaf Copyright of www.makemegenius.com, for more videos ,visit us. Leaves-External Copyright of www.makemegenius.com, for more videos ,visit us. Leaves-Internal • Upper and lower epidermis-skin of the leaf that prevents the loss of too much moisture • Stomates-small openings under the leaf for breathing or transpiration • Guard Cells-open and close stomates Copyright of www.makemegenius.com, for more videos ,visit us. Leaves-Internal • Chloroplasts-small green particles that contain chlorophyll – gives leaves their green color – necessary for photosynthesis Copyright of www.makemegenius.com, for more videos ,visit us. Leaves-Internal Copyright of www.makemegenius.com, for more videos ,visit us. Leaves-Internal Copyright of www.makemegenius.com, for more videos ,visit us. Stems-External • Lenticels-breathing pores • Bud scale scars-show where terminal buds have been located • Leaf Scars-show where leaves were attached • Terminal bud-bud on the end of a stem • Axillary or lateral bud-bud on side of stem Copyright of www.makemegenius.com, for more videos ,visit us. Stems-Internal • Xylem-tissue that transports water and nutrients up from the roots to stems and leaves • Phloem-tissue that transports food down from leaves to roots Copyright of www.makemegenius.com, for more videos ,visit us. Stems-Internal Phloem Phloem Xylem Copyright of www.makemegenius.com, for more videos ,visit us. Stems-Internal • Cambium-thin, green, actively growing tissue located between bark and wood and produces all new stem cells • Bark-old inactive phloem • Heartwood-old inactive xylem • Sapwood-new active xylem Copyright of www.makemegenius.com, for more videos ,visit us. Stems-Internal Bark Cambium Sapwood Heartwood Copyright of www.makemegenius.com, for more videos ,visit us. Stems-Internal • Monocota-plant stems have vascular bundles that contain both xylem and phloem in each bundle – examples: corn, grasses • Dicata-plant stems have the phloem layer and xylem layer separated by cambium – example: trees Copyright of www.makemegenius.com, for more videos ,visit us. Roots-External • Root cap-indicates growth of new cells • Root hairs-absorb moisture (water) and minerals Root images from a rice plant Copyright of www.makemegenius.com, for more videos ,visit us. Roots-Internal • Much like stems in that they have a phloem, cambium, and xylem layer • Phloem-the outer layer that carries food down the root • Xylem-the inner layer that carries water and minerals up to the stem Copyright of www.makemegenius.com, for more videos ,visit us. Layers of Roots • Fibrous-many branched shallow roots – are easier to transplant • Tap-long root with few branched ones – more difficult to transplant Copyright of www.makemegenius.com, for more videos ,visit us. Flowers • Sepals-Green parts that cover and protect flower bud before it opens • Petals-are really leaves that are modified to attract insects for flower pollination, the pretty part that we call flowers • Stamen-male part of the flower • Pistil-female part of the flower Copyright of www.makemegenius.com, for more videos ,visit us. What are the functions of these plant parts? Copyright of www.makemegenius.com, for more videos ,visit us. Functions of Leaves • Photosynthesis-manufactures food in green plants which is the beginning of the food chain for all living things • Photosynthesis is the process by which carbon dioxide and water in the presence of light are converted to sugar and oxygen Copyright of www.makemegenius.com, for more videos ,visit us. Functions of Stems • Translocation-moves water and minerals from roots up to the leaves and move food from the leaves down to the roots • Supports branches, leaves, flowers, fruits and seeds Copyright of www.makemegenius.com, for more videos ,visit us. Functions of Roots • Absorption-take water and nutrients from the soil and conduct them to the stem • Anchor the plant and hold it upright • Store food for plant use • Asexual reproduction in some plants Copyright of www.makemegenius.com, for more videos ,visit us. Functions of Flowers • Produce seeds used for sexual reproduction • Attract insects for pollination (Pollination is the transfer of pollen from anther to stigma.) • Produce fruit to protect, nourish and carry seeds Copyright of www.makemegenius.com, for more videos ,visit us. Thanks Submitted by Astha Delhi Copyright of www.makemegenius.com, for more videos ,visit us. If you also want to share your own or your kid’s presentation(ppt) please send it on [email protected] Copyright of www.makemegenius.com, for more videos ,visit us. “Don’t make me read, make me understand “ www.makemegenius.com– Full of ingredients to make your child a genius. Copyright of www.makemegenius.com, for more videos ,visit us.