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Topic: Seed plant

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In the News (Mon 22 Jul 19)

  Seed - MSN Encarta
Seeds of the angiosperm, or flowering plant, differ from those of the gymnosperm, or conifer and related plants, in being enclosed in the ovary that later forms a fruit; gymnosperm seeds lie exposed on the scales of the cones.
In a few plants, such as the orchids, the embryo is a small, undifferentiated mass of cells until after the seed has parted from the parent plant; during the period between separation from the parent plant and eventual germination, the undifferentiated cells develop into an embryonic root, bud, stalk, and leaf.
In most other plants this development occurs prior to seed dispersal: the embryonic root, or radicle, usually grows toward the micropyle; the embryonic bud, called plumule, or epicotyl, is at the end of the embryo opposite to the radicle; the embryonic stem, or hypocotyl, connects the radicle with the seed leaves, or cotyledons.
encarta.msn.com /encyclopedia_761557802/Seed.html   (835 words)

 Non-seed plants
The protrusions on the surface are gemmae, antheridia, and archegonia.
The horizontal plant with bumps (antheridia) is the gametophyte.
The y-shaped plant behind it is the developing rhyzome of a very young sporophyte offspring of the gametophyte.
www.cas.vanderbilt.edu /bioimages/pages/non-seed-plants.htm   (488 words)

 ABRC - Plant and Seed Handling
Seeds can be planted in various ways, however, strict control of numbers of seeds planted can be maintained, and separate rows of different lines can be planted in the same pot for critical comparisons with the techniques described here.
Seeds left at ambient temperature and relative humidity lose viability relatively quickly, although they may be viable for about two years if stored in a dry atmosphere at room temperature.
Seed viability is the condition in which seeds are alive, have the potential to germinate and develop into normal reproductively mature plants, given the appropriate conditions.
www.biosci.ohio-state.edu /~plantbio/Facilities/abrc/handling.htm   (5015 words)

  Plant - Wikipedia, the free encyclopedia
Plants are distinguished from green algae, from which they evolved, by having specialized reproductive organs protected by non-reproductive tissues.
Early seed plants are referred to as gymnosperms (naked seeds), as the seed embryo is not enclosed in a protective structure at pollination, with the pollen landing directly on the embryo.
The angiosperms, comprising the flowering plants, were the last major group of plants to appear, emerging from within the gymnosperms during the Jurassic and diversifying rapidly during the Cretaceous.
en.wikipedia.org /wiki/Plant   (1604 words)

 Fossil Record of the Seed Plants
The earliest seed plants produced their seeds along their branches without specialized structures, such as cones or flowers, unlike most living seed plants.
Seed plants were thus overshadowed in their early evolution by plants which did not produce seeds.
By the Permian, the seed plants were beginning to produce large trees, and by the Triassic, all major groups of seedplants had appeared, except for the flowering plants.
www.ucmp.berkeley.edu /seedplants/seedplantsfr.html   (703 words)

 Planting a Lawn -- Seed Super Store
Seed drills, such as a Brillion seeder, are towed behind a tractor.
Hydroseeders spray a slurry of seed, mulch, fertilizer, water and green dye onto the soil surface.
Because the seed is not firmly in contact with the soil, it is vulnerable to drying out and death if not kept continuously moist until germination.
seedsuperstore.com /ask_the_expert/planting.asp   (2276 words)

 Hybrid Varieties and Saving Seed
Plants are grown from seed produced and the result of this cross pollination should have a good habit and good color.
In the case of seed saving, a part of the row or maybe a few plants in the row are tagged as those to be allowed to produce seed.
Although the seed may be removed from the pod, it is generally best to store them in the pod until ready for planting at which time the pods may be split open and the seed removed.
aggie-horticulture.tamu.edu /plantanswers/vegetables/seed.html   (1562 words)

 National Garden Bureau : Great Gardeners Use Seed : Plant Genealogy
To produce hybrid seed, pollen is moved, often by hand, but possibly by insects or the wind, from the anthers of one inbred plant (male) and placed on the stigma of the second inbred plant (female).
The breeder would pollinate this plant and grow out large numbers of the second generation as this is where the most variations occur and good combinations of characteristics from the parents are sometimes found.
Certified seed is seed that has been certified by an independent organization that says the seed meets specific organic standards established by the organization.
www.ngb.org /seed/article.cfm?ID=13   (887 words)

 Plant A Seed Home Page
Plant A Seed was established in 1988 and in the last decade has become one of the largest independent interior landscape companies in South Wales.
Plant A Seed will come to your premises to work with you, and offer advice and recommendations on the most appropriate plants and containers to use, this will ensure the displays are used to there maximum effect.
Plant a Seed are based in the Cardiff area and is soon to open a new premises near to the City Centre, which will be open to the general public as well as commercial clients who wish to come and view the many different types of plants and containers we keep in stock.
www.plant-a-seed.co.uk   (573 words)

 Great Plant Escape - Seed Structure
Seed coats can be thin and soft as in beans or thick and hard as in locust or coconut seeds.
Plants are classified based upon the number of seed leaves (cotyledons) in the seed.
Plants such as grasses can be monocots, containing one cotyledon.
www.urbanext.uiuc.edu /gpe/case3/c3facts2.html   (109 words)

 BLUE-X Plant Shelters: Direct Seed Plant Shelters
Direct seeding of native plants and shrubs is essential for the development of a strong natural root system.
Direct seeding in large scale or wildland plantings has often been thought to be impractical because of the high cost associated with each unit planted compared to the number of trees successfully grown.
Direct Seed Plant Shelters are available in 3 sizes: 2-1/2 inches in diameter by 11 inches, 18 inches or 24 inches in height.
www.growtube.com /seedlingshelters.html   (619 words)

 Home Page- SD Crop Improvement Association
While seed is basic to life and good seed is basic to sound agricultural growth and prosperity, it is not the only reason for the Association's existence.
SDCIA is the official certification agency for seed and propagating materials of all crops (except potatoes) in the state.* It has close working relationship among seed growers, agricultural research, extension and regulatory agencies.
Breeder seed developed and supplied to the FSSD is increased, inspected by the SDCIA, and distributed as Foundation seed to SDCIA members and Seed Trade Association members on an established priority basis.
plantsci.sdstate.edu /seedcert   (1633 words)

Since the seed is typically too large to be disseminated by the wind, other methods of dispersal have evolved in the seed plants.
In the interior of the seed, and along one edge, you will be able to find the tiny embryo, complete with its leaves and future stem and root Refer to pages 362, 369, and 401 in text to see photos of bean and corn seeds and their germination.
It is the endosperm of the corn seed that
www2.volstate.edu /JSchibig/Alabexercisesbio1030online/lab8seedplantreproduction.htm   (1918 words)

 Biological Diversity 6
Not all seed plants have such a long time span to complete their life history: some flowering plants manage to do it in as little as a few weeks.
The seed is later released to be transported by the wind to where (hopefully) it lands and germinates.
The importance of this plant family to modern civilization cannot be overstated, as the first six plants mentioned in the previous sentence provide 75% of our food, either directly as food we eat or indirectly as food for animals we eat.
www.emc.maricopa.edu /faculty/farabee/BIOBK/BioBookDiversity_6.html   (3492 words)

 Reisig Seeds, LLC » Tour the Seed Plant
This is a rare, early morning rainbow framing the Reisig Seeds seed facility.
After the seed is cleaned, it is elevated into overhead bins where it is gravity fed to a bagger or can be bulk loaded directly onto a truck.
Treated seed is conveyed into a truck to be taken to a field for planting.
www.seedwheat.com /tour-the-seed-plant   (196 words)

 Silphium laciniatum Compassplant Compass Plant Seed
Native Compass Plant's leaf surface faces the morning and afternoon sun, positioning the leaf in a north south direction (thus its name).
Silphium laciniatum seed germination is improved after a pretreatment of 3 to 4 weeks of cold moist stratification or when planted outside in the fall or early winter.
Compass Plant is a tall plant occurring naturally in prairies and glades from Ohio and Michigan to Minnesota and North Dakota, south to Alabama, Oklahoma and Texas.
www.easywildflowers.com /quality/sil.lacin.htm   (345 words)

 About Us   (Site not responding. Last check: 2007-10-31)
Seeds cannot normally be returned without the express written permission of the Ontario Tree Seed Plant.
We guarantee all seed to be correctly labelled and shipped in the condition described by the statistical data associated with that seed.
Seeds are stored in our freezers at a temperature of –18° C or 0° F. Seed viability is re-tested if seed is stored for 3 or more years.
ontariosforests.mnr.gov.on.ca /otspoverview.cfm   (1370 words)

Seed saved by the home gardener will probably be the result of random pollination by insects or other natural mechanisms.
Planting these seeds directly in the garden may be a waste of time and effort if germination rate is very low.
If no depth is specified on the seed packet, use the general rule of planting the seed at a depth twice the diameter of the seed.
www.hcs.ohio-state.edu /mg/manual/prop.htm   (3079 words)

 Seed saving instructions for expert seed savers.
Seed to seed: Mulch first year crop in the fall to ensure winter survival.
Plants to be left for seed production should be mulched in the fall or carefully dug, trimmed and stored for the winter in humid area with temperatures between 35-40° F. Flowering plants can reach 4' in height and need at least 2' spacing for good seed production.
Seed to seed: Mulch in late-fall to insure winter survival.
www.seedsave.org /issi/904/expert.html   (1642 words)

 From Seed to Plant Lesson Plan   (Site not responding. Last check: 2007-10-31)
The "seed" style is adopted by the student.
Seeds can be removed from the apparatus by using plastic tweezers and viewed.
Once the plants begin to grow, students can record the data for growth in metrics and create the necessary graphs and data tables throughout the year as the plants survive.
www.cas.psu.edu /docs/CASPROF/agclassroom/lesson3.html   (449 words)

 Lesson Exchange: From Seed to Plant (Elementary, Science)
Seeds from flowering plants have seed coats to protect them." 2.Soak a lima bean in water over night.
Display seeds that come from all kinds of plants: acorns, poppies, carrots, lettuce, rice, watermelon, nuts, etc. 2.Measure the bulk of different kinds of seeds.
Plant them in the soil when they become too large for the jar.
www.teachers.net /lessons/posts/1480.html   (1137 words)

 Soapnuts Seed/Plant Exchange
Plants should be clean and free of 'bugs' and in good, healthy condition.
Seeds should be sent in seed packets, either coin envelopes (found at Staples, etc.) or homemade paper envelopes, etc.
I have chocolate mint plants, lilly roots mostly day lilly, ivy rooted cuttings, garlic chives plants, beebalm plants, Japanese maple seedlings4-6", also sedum plants and various aromatic herb plants to trade for flower seeds or plants/ herb seedsor plants.
www.soapnuts.com /seedswap.html   (954 words)

 National Gardening Association :: Seed Swap
In this free forum, you can find the seeds you've been looking for, or share your excess seeds with others.
When you run out of seed, search for your swap, and delete it using the response form.
When someone wishes to swap seeds with you, they will submit their email address.
www.garden.org /seedswap   (270 words)

 Seed Sources
Native plants, seed and landscaping for northern Arizona.
Native plants and seeds for the rim country.
Seed and seed mixes for xeriscape lawns, wildflowers, grasses, pastures, western shrubs.
www.thearb.org /seed_sources.htm   (319 words)

 Plant a Seed!
One of the first things we did at the beginning of this unit is establish what a plant is and what an animal is. I first gathered them on the rug and we discussed what we knew about plants and animals.
We then wrote on the posterboard- This is what a plant is, and This is what an animal is. I let the kids loose for about 15-20 minutes on my magazine box with the simple rule to look ALL the way through the magazine before you got a new one.
After the entire class is finished watering, we discuss what things we have given the plant to grow (water, soil, a container, etc.) I then have the class (one by one) bring their cups to the window and place them on the sill.
www.geocities.com /thelearningleapthemes/plants.html   (1143 words)

 Composition of the New Zealand Seed Plant Flora
The statistics represent information for validly published seed plant names that are currently in use at the Allan Herbarium (CHR), and are recognised as being wild in New Zealand on 1 September 2000.
The genera in the New Zealand Plant Names Database are currently arranged according to the classifications of Kramer and Green (1990) for the gymnosperms and Cronquist (1988) for the angiosperms.
Table 13: The seed plant families with genera endemic to New Zealand, showing the number of genera and species in each family, and number of species in each genus.
www.landcareresearch.co.nz /research/biodiversity/plantsprog/florastats.asp   (1113 words)

 Genome Biology | Full text | Expressed sequence tag analysis in Cycas, the most primitive living seed plant
The Cycadales (cycads) are the most primitive living seed plants and have endured over 270-280 million years since their origins in the Lower Permian [1,2].
Such characteristics include pollen tubes, which release motile sperm before fertilization; dichotomous branching (versus axillary branching in higher plants); and ovules, which contain a large, free-nuclear megagametophytic stage, that are borne on the margins of leaf-like megasporophylls [5-7].
The study of cycads has proved to be useful in reconstructing plant evolution, in particular in understanding the rise of important plant structural innovations such as the evolution of seeds [47].
genomebiology.com /2003/4/12/R78   (5564 words)

 CD Baby: PLANT THE SEED: Plant The Seed
Plant The Seed combines the inspiring and smooth sounds of contemporary gospel and jazz.
The Music of Plant The Seed, is "MUSIC THAT FEEDS THE SOUL." You will be transfixed and transported to heavenly realms with the captivating lyrics and soul penetrating melodies.
Plant The Seed boast an array of artists that are amongst the most sought after studio players and live performers.
cdbaby.com /cd/planttheseed   (241 words)

 Systematics of the Seed Plants   (Site not responding. Last check: 2007-10-31)
The seed plants are often divided arbitrarily into two groups: the gymnosperms and the angiosperms.
It should also be noted that the "progymnosperms" are represented by a box of a different color, in order to make it clear that they are not actually seed plants, but rather are included here because they are believed to be the closest relatives of the seed plants.
For more information on seed plant relationships, visit the Spermatopsida page on the Tree of Life.
www.ucmp.berkeley.edu /seedplants/seedplantssy.html   (262 words)

 Seed and Plant Catalogs   (Site not responding. Last check: 2007-10-31)
Stokes Seeds...This is a HUGE catalog that is based in Fredonia, New York and I feel has a Great selection on seeds and I use this one the most, Although they dont have alot of untreated seeds yet they are expanding them every year...
Seeds of Change...Here is a 100% Organic seed catalog that is based in Sante Fe, New Mexico and has some very unique items in it I havent seen in other catalogs...Here you go Organic growers, you can amaze your neighbors with the things you can get in here !
Burpee's Seed Catalog...Here is a Great Catalog that is based near Doylestown Pa not to far from me...This Catalog also has a Great selection of many different things...
home.ptd.net /~organic1/SeedPlants.html   (575 words)

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