what are the conditions necessary for a seed to grow?
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All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.
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Every seed is a tiny plant (embryo) with leaves, stems, and root parts waiting for the right things to happen to make it germinate and grow. Seeds are protected by a coat. This coat can be thin or thick and hard. Thin coats don't protect the embryo well.
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Sunflowers thrive in warmer weather and climates. They are known for their hardiness and the ability to survive extreme heat; however, the optimal temperatures for growing sunflowers is between 70 and 78 degrees Fahrenheit, with soil temperatures of at least 55 to 60 degrees when the seeds are sown.
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['They help in germination of the new plant.', 'The seeds contain food reservoirs in the form of cotyledons and endosperm.', 'The seed coat is protective in nature which protects the embryo inside.']
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How long does it take grass seed to germinate? Depending on the mixture, you should expect initial growth to begin in 10-14 days providing moisture is available to the seedlings and the soil is warm enough. Seed germinates best when soil temperatures are above 17° C (62° F).
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['Low Water Requirements. Desert plant survival depends on being able to exist on very little rainfall. ... ', 'Small or No Leaves. Moisture evaporates through leaves. ... ', 'Thorns. Many desert plants have needles or thorns. ... ', 'Ability to Quickly Absorb Water.']
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Growing Lychee from Seed Lychee seed propagation works best with mature fruit. ... pot with moist, rich growing medium and sow a single seed at a depth of 1 inch (2.5 cm.). Keep the pot moist and warm (between 75 and 90 F., or 24 and 32 C.). Lychee seed germination usually takes between one and four weeks.
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Is it living or non-living? A seed is the embryo of a new plant and as such is a living thing ,but in a dormant state, which requires being buried in soil or other suitable matter to trigger off the renewal process.
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C is correct. While soil depth, temperature, and water are all required for germination, sunlight is not required until after the seedling has emerged from the soil surface.
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["Nutrients. Nutrients are needed for the organism's growth and development.", "Temperature. If the temperature isn't ideal, organisms lose their ability to reproduce and survive.", 'Light.']
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Temperature is important for the seed to continue metabolic activities. Fifty degrees Fahrenheit is the generally accepted temperature at which these processes begin to occur and it usually requires 90 GDU's for soybeans to emerge and 100-120 GDU's for corn to emerge.
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Not every plant grows from a seed. Some plants, like ferns and mosses, grow from spores. Other plants use asexual vegetative reproduction and grow new plants from rhizomes or tubers. We can also use techniques like grafting or take cuttings to make new plants.
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['They do not produce flowers.', 'Seeds are not formed inside a fruit. ... ', 'They are found in colder regions where snowfall occurs.', 'They develop needle-like leaves.', 'They are perennial or woody, forming trees or bushes.', 'They are not differentiated into ovary, style and stigma.']
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This is important because if the seeds are not dispersed, many germinating seedlings will grow very close to the parent plant. This results in competition between every one of the seedlings as well as with the parent plant. The competition is for light, space, water and nutrients.
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Lettuce is adapted to cool growing conditions with the optimum temperatures for growth of 60 to 65°F. At 70 to 80°F, the plants flower and produce seed. Lettuce can tolerate a few days of temperatures from 80 to 85°F, provided that nights are cool.
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The ideal or optimal soil temperature for planting and growing most vegetables is 65° to 75°F. Vegetable seeds and seedlings require minimum soil temperatures to germinate and grow. Seeds and seedlings require optimal soil temperatures to thrive.
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Why do potatoes sprout? Fun fact: Potatoes don't actually need soil to sprout—they just need favourable environmental conditions. So, if you keep your potatoes somewhere that it's cool, dark, and they have access to moisture, they will joyously begin to spread their sprouts and grow in the shadows.