Sunday, April 22, 2012

Young Plant Structure and Function




Root Hairs: A hairlike outgrowth of a plant root that absorbs water and minerals from the soil. Root hairs are tubular extentions of the epidermis that greatly increase the surface area of the root.
Node: a part of the stem that bears a leaf.
Internode: the part inbetween two nodes.
Primary Root: the first root produced by a germinating seed, developing from the radicle of the embryo.
Lateral Root: Roots that extend horizontaly from the primary root and serves as support to hold the plant securely in the soil.
Leaf: one of the expanded, green organs produced by the stem of a plant and any similar or corresponding lateral outgrowth of a stem. The main photosynthetic organ of vascular plants.
Tap Root: a main vertical root that develops from embryonic root and gives rise to lateral roots. Only in beans because the monocots do not have a main root.
Cuticle: A waxy covering on the surface of stems ans leaves that prevents desiccation in terrestrial plants
Dermal Tissue system: The outer protective covering of plants.
Cotyledon: A seed leaf of an angiosperm embryo. Some have one cotyledon some have two.
Coleoptile: the covering of the young shoot of the embryo
Bud: a small axillary or terminal protuberance on a plant, an undeveloped or rudimentary stem or branch of a plant. 
Terminal Bud: dominant bud

Bean
Lateral Root and Stem of Tommy


Bean
Cotyledon of Tommy
He is growing up so fast!!


Bean
Bud of Tommy
I am so proud of my little baby bean! He is growing so fast!

Corn
Lateral Root of Layla

Corn
Starting Stem of My Beautiful Baby Girl Layla!



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