Kindly click the links below
http://www.botany.uwc.ac.za/sci_ed/grade10/anatomy/stems.htm
http://www.ucmp.berkeley.edu/glossary/gloss8/monocotdicot.html
http://www.biology.iastate.edu/Courses/202L/New%20Site%20S05/25rtstm%20index.html
http://waynesword.palomar.edu/trjune99.htm
2007-02-10 02:42:58
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answer #1
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answered by Anonymous
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Roots: The roots are adventitious in monocots, while in dicots they develop from the radicle.
Root developing from any part other than the radicle is called adventitious root. Adventitious roots develop on stems, leaves and even old roots.
Adventitious roots and buds usually develop near the existing vascular tissues so they can connect to the xylem and phloem. However, the exact location varies greatly. In young stems, adventitious roots often form from parenchyma between the vascular bundles. In stems with secondary growth, adventitious roots often originate in phloem parenchyma near the vascular cambium. In stem cuttings, adventitious roots sometimes also originate in the callus cells that form at the cut surface. Leaf cuttings of the Crassula form adventitious roots in the epidermis.
The radicle is the first part of a seedling (a growing plant embryo) to emerge from the seed during the process of germination. The radicle is the embryonic root of the plant, and grows downward in the soil. Above the radicle is the embryonic stem or hypocotyl, supporting the cotyledon
2007-02-06 03:47:39
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answer #2
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answered by MSK 4
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The traditionally indexed transformations between monocotyledons and dicotyledons are as follows. it somewhat is a extensive comic strip in basic terms, no longer continuously appropriate, as there are diverse exceptions. the transformations indicated are truer for monocots as against eudicots, as consistent with the APG II equipment: plant life: In monocots, plant life are trimerous (style of flower areas in a whorl in threes) whilst in dicots the plant life are tetramerous or pentamerous (flower areas are in fours or fives). Pollen: In monocots, pollen has one furrow or pore whilst dicots have 3. Seeds: In monocots, the embryo has one cotyledon whilst the embryo of the dicot has 2. Stems: In monocots, vascular bundles in the stem are scattered, in dicots arranged in a hoop. Roots: In monocots, roots are adventitious, whilst in dicots they advance from the radicle. slice of onion, displaying parallel veins in bypass sectionLeaves: In monocots, the main leaf veins are parallel, whilst in dicots they're reticulate. in spite of if, those transformations are no longer difficult and quickly: some monocots have features extra known of dicots, and vice-versa. it somewhat is partly simply by fact "dicots" are a paraphyletic group with appreciate to monocots, and a few dicots may well be extra heavily relating to monocots than to different dicots. in specific, countless early-branching lineages of "dicots" proportion "monocot" features, suggesting that those are no longer defining characters of monocots. while monocots are in comparison to eudicots, the transformations are extra concrete.
2016-12-17 10:40:00
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answer #3
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answered by ? 4
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