What are the most important plant hormones involved in germination?
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Mainly plant growth is controlled by auxins, gibberellins, cytokinins, ethylene gas, abscisic acid. auxins help in growth of roots, gibberelins for shoot, cytokinins for cell elongation, cell multiplication, cell maturation, ethylene gas and abscisic acid are antagonistic and control the dropping of fruits, leaves etc
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Germinate seeds on moist filter paper in petri dishes at 20 C. \nCollect root tips when they are about 1 cm long and pretreat with ice water for 24-48 h. \n Fix in Carnoy's I. \n Squash in 45 % acetic acid. \n Remove cover slips by the dry ice method and air dry. \n Drop fixative onto the preparations and flame dry. \n Dissolve 1 g of silver nitrate (AgNO3) in 1 ml of 0.02 g sodium citrate (C6H5Na3O7.2 H2O) per 500 ml distilled water, adjusted to pH 3.0 with formic acid. \n Add 1 or 2 drops of above solution (needs to be prepared fresh each time) onto the slides and place a cover slip over the preparation. \n Incubate slides in a moist chamber at 55-60 C for 30 min to several h. Monitor the silver precipitation under the microscope. \n When chromosomes are stained brown to yellow and Ag-NOR-bands appear black, staining is complete. Rinse slides thoroughly in distilled water. \n Soak in xylene and mount in Depex.
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depends on the lighting. Auxin plays a huge role in the plant and can change constantly. Cytokins and Gibberellians are also horomones in a plant but they usually regulated by either the plant gene or the plant cell.
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Nitrogen, phosphorous, and potassium. There are also micronutrients like nitrates, nitrites, and several other nutrients plants need.
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hormones.  that is the biggest factor.
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B) Adrenal\n\nhttp://en.wikipedia.org/wiki/Adrenal_gland
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Lipids are fats, oils and waxes.\nThe seeds of some plant species store mostly carbohydrates, others store lots of lipids. These stores are both for energy to grow (germinate) and to provide materials to grow before photosynthesis takes over.\n\nEverything a plant needs is made from carbon dioxide plus water (during photosynthesis) and soil minerals. As plants make seeds they move carbohydrates and lipids into them.
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hormones are molecules that act on cells to cause changes in cellular homeostasis.  Steroids are made from cholesterol (such as progesterone, testosterone).  Other horomones such as growth factors are proteins, others are small peptides such as insulin.
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water really do play a vital role in seed germination because seeds undergo water imbibation (especially those seeds that have been dormant for quite a long time) in order to break the seed coat. however, when it comes to the percentage of water to be present in soil, that would actually depend on the kind of plant seed that you are germinating. there are those plant seeds that just requires soil to be moist (that is, most of the soil micropores are filled with water) and others would need more water molecules in the soil (soil macropores are filled with water).
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Sexual reproduction in plants is described in Wikipedia as;\n\nIn flowering plants, a stamen produces gametes called pollen grains, which attach to a pistil, in which the female gametes (ovules) are located. Here, the female gamete is fertilized and develops into a seed. The ovary, which produced the gamete then grows into a fruit, which surrounds the seed(s). Plants may either self-pollinate or cross-pollinate.\n\nYou can also find out more here \nhttp://en.wikipedia.org/wiki/Plant_sexuality
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1. A- mosses- basic, no vascular tissue, reproduction requiires water\nB- Ferns- vascular tissue present\nC- gymnosperms- seeds\nD- angiosperms- flowers and fruits\n\n2. Monocots have one cotyledon, dicots have 2\n\n3. cotyledons are the first leaves that sprout out of the seed, they contain nutrients for hte seed\n\n4. male- stamen, female- pistil\nSeed- sporophyte, fruit- ovary\n\n5. Photosynthesis is the making sugar/energy from CO2 and light\nTakes place in the stem and leaves (wherever green).  or more specifically, in the chloroplasts, in the stroma and thylakoid membrane\n\n6. Vascular tissue are a transport system, carrying water, minerals and sugar up to all parts of the tree\nAdvantages- grow bigger, compare mosses and trees\n\n7. tropism is the plants tendency to grow\nPhototropism- grow towards light.  light slows down cell elongation in stem that it hits, opposite side grows faster\nGravitropism- roots grow downward.  heavy molecules sink, thus coordinating top cells to elongate
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more plant cells.  photosynthesis (production of energy)+water+soil nutrients=plant cell reproduction and growth.
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protein:   insulin, thyroxin,glucagon\nsteroid:  cortisol, testosterone, estrogen, progesterone.
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Try to think of all the things that plants use potassium for. Potassium is extreemly important for animals - for a start it regulates our heart beat. For plants one of its major uses is to control the opening and closing of stomata, this affects the rate at which water evaporates from the leaves. Plants also use it during photosynthesis and respiration (the P in NADP etc.), so it's pretty essential. Plants can germinate without an external source of it because they generally have some in their seeds, but it will not grow or die without potassium.
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They are things that plants need in order to grow.
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ripened ovary, seeds, flowering plant
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During germination the materials in a seed have to be changed into chemicals (nutrients) that be used immediately or transported to where they are needed.\nMost seeds store their carbohydrates as starch. This has to be changed into glucose.\nThis is controlled and catalysed by special protein molecules called...\n(Clue: in your gut, what changes starch into sugars?)