The three factors necessary for germination of a seed are:
(1).Water:
Seed obtains water from its environment, i.e from the soil, in natural conditions. The water is absorbed all over the surface but mainly through the micropyle. Two main uses of water are:
(i) The seed swells and consequently the seed coat ruptures allowing the elongating the radicle to come out and form the root system.
(ii). water is necessary for chemical reaction and for the enzymes to act on the food stored in the cotyledons or the endosperm so that it is converted into diffusable form dissolved and utilized by the growing embroyo.
(2).Suitable temperature:
Both very low and high temperatures are unsuitable for germination.A very low temperature inhibits the growth of the embroyo and a very high temperature destroys its tissues.A moderately warm temperature(25 degrees to 35 degrees centigrade) is usually favourable for germination and it is also called optimium temperature.Seeds of tropical plants need a higher temperature than those of the temperate regions.
(3).Oxygen:
During germination there is rapid cell division and cell growth for which energy is required.This energy is available only by respiration(for oxidation of food) and hence the need for oxygen(or air).
Manipulated variable is also known as the independent variable. The independent variable may determine if a seed germinates. Examples of manipulated variables for seed germination include: water, suitable temperature and air/oxygen. These basic variables are also the most important in seed germination.
Germination in a seed typically begins when the seed is planted in soil and provided with the right conditions such as water, warmth, and oxygen.
Oxygen gas is needed by the seed during germination. Aerobic respiration takes place during seed germination to release lots of energy required for this process.
Germination of a seed is generally considered an irreversible process, as it marks the beginning of the growth of a new plant. Once the seed has undergone germination and starts to grow, it cannot revert back to its dormant state.
The biome with the longest seed germination time is typically the arctic tundra due to the cold temperatures and short growing season that restricts seed germination and growth. Some seeds in the arctic tundra can remain in the soil for years before conditions are right for germination.
Temperature has the greatest effect on seed germination.
Temperature and Moisture.
Germination is the process by which a seed sprouts and begins to grow into a seedling. It involves the reactivation of the embryo within the seed and the emergence of the root and shoot. Germination is triggered by factors like water, temperature, and oxygen.
Some environmental factors that may favor seed germination include the availability of water, optimal temperature, and the presence of oxygen. Additionally, the presence of light or specific chemicals may also play a role in promoting seed germination.
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Germination.
Manipulated variable is also known as the independent variable. The independent variable may determine if a seed germinates. Examples of manipulated variables for seed germination include: water, suitable temperature and air/oxygen. These basic variables are also the most important in seed germination.
Warm soil and moisture for germination. After germination is when all of the other factors affect plant growth. There are Organic Seed Starters available which can change days of normal germination into hours. The best Organic Seed Starter I have used changed the 7- 10 day germination printed on the packet to only 24 hours.
The contents of a seed are used up after germination by the seedling growing from it.
Well, there's seed development when the inflorescences of the seed head stop flowering and everything goes into seed production, and then there is germination, where a plant grows from a seed that was planted in the soil.
Yes because of Lauren Hallas.
Seed germination typically takes place in the soil. The seed absorbs water from the soil, which triggers the germination process by initiating metabolic functions that allow the seedling to sprout and grow.