what are the three conditions necessary for seed germination?
48675
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.
517615
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.
260980
Generally speaking, it takes between 7 and 30 days for grass seed germination to begin. However, it's important to know that host of factors can influence how fast your grass grows — including weather, grass type, and soil.
964409
['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.']
1083608
Plants need five things in order to grow: sunlight, proper temperature, moisture, air, and nutrients. These five things are provided by the natural or artificial environments where the plants live. If any of these elements are missing they can limit plant growth.
1345135
['Crop Selection.', 'Land Preparation.', 'Seed Selection.', 'Seed Sowing.', 'Irrigation.', 'Crop Growth.', 'Fertilizing.', 'Harvesting.']
586339
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.
932667
Green beans grow best when air temperatures range from 65°F to 85°F. Soil temperatures should be at least 55°F for good seed germination.
58069
The three primary parts of a seed are the embryo, endosperm, and seed coat. The embryo is the young multicellular organism before it emerges from the seed. The endosperm is a source of stored food, consisting primarily of starches. The seed coat consists of one or more protective layers that encase the seed.
1252339
Cucumbers germinate best at warmer temperatures of 70° to 95° F, with fastest germination at warmer end of this range. Seeds should be kept moist but not wet for germination. Generally, cucumbers should germinate within a week if kept moist at temperatures of 70° to 95°F.
366226
The embryo, endosperm, and seed coat are the three major parts of a seed. An embryo is the young multicellular organism formed before it emerges from the seed. A seed is an embryonic plant, which stores food and are enclosed in a protective outer covering, which give rise to a new plant.
1458631
Most seeds germinate when the soil temperature is between 68(and 86(F. Once germination occurs, the optimum growing temperature for theseedling is about 10(F cooler than the optimum germination temperature. Moisture is critical for germinating seeds. They like a moist but not soggy environment.
819705
['Physiognomy: ... ', 'Growth-forms and life-forms: ... ', 'Phenology, periodicity or aspection: ... ', 'Stratification: ... ', 'Species abundance and species diversity: ... ', 'Sociability: ... ', 'Vitality: ... ', 'Disseminule type:']
417145
A seedling is a young plant sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed. A typical young seedling consists of three main parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves).
984256
Viable seeds are living entities. They must contain living, healthy embryonic tissue in order to germinate. All fully developed seeds contain an embryo and, in most plant species, a store of food reserves, wrapped in a seed coat.
200399
"There are three parts of a seed." "A bean or seed consists of a seed coat, an embryo, and a cotyledon." "The embryo is the tiny plant protected by the seed coat."
96514
['Wind.', 'Rain.', 'Humidity.', 'Latitude.', 'Temperature.', 'Elevation.', 'Soil composition.', 'Salinity (the concentration of salt in water)']