Steps of Seed Germination Seed consists of an embryonic plant that is in resting form. Seed germination is a very important phase in the growth of any plant. It is quite interesting to understand steps of seed germination.
You will see a wide variety of trees in your surroundings. Trees play important role in maintaining ecosystem and keeping the environment refreshing and pollution-free. Whenever you watch small or big trees, plants or shrubs, you must be curious about their growth and life cycle. Life cycle of any plant is divided in different phases and seed germination is basic stage to start the growth of plant. You may think that seed is lifeless, but it is not true. It consists of plant in a resting, embryonic condition. Whenever it gets favorable environmental conditions, it starts to germinate. This process occurs through different steps of seed germination. Inactive seed lying in the ground needs warmth, oxygen and water to get developed into plant. Off-course, all the seeds lying in ground are not lucky enough to get proper environment to germinate. Many seeds tend to get dried and cannot develop into a plant. Some seeds get sufficient amount of water, oxygen and warmth and seed germination starts.
Seed structure
Seed coat is outer covering of seed, which protects embryo from any kind of injury, entry of parasites and prevents it from drying. Seed coat may be thick and hard, or thin and soft. Endosperm is a temporary food supply, which is packed around embryo in the form of cotyledons or seed leaves. Plants are classified as monocots and dicots depending upon number of cotyledons.
Requirements for seed germination
All seeds need adequate quantity of oxygen, water and temperature for germination. Some seeds also need proper light. Some can germinate well in presence of full light, while others may require darkness to start germination. Water is required for vigorous metabolism. Soil temperature is equally important for appropriate germination. Optimum soil temperature for each seed varies species to species.
Factors affecting seed germination
There are several factors that can affect germination process. Over watering can prevent the plant to get enough amount of oxygen. If seed is deeply planted in soil, then it can make to use all the stored energy before reaching soil surface. Dry conditions can prevent germination, as seed doesn't get enough moisture. Some seeds have so hard seed coats that oxygen and water get through it. If soil temperature is extremely low or high, then it can affect or prevent germination process.
Steps of seed germinations
Process of germination occurs in different stages. Some steps of seed germination are as follows:
Germination in dicots
During germination process of dicots, primary root emerges through seed coat when seed is buried in soil. Hypocotyl emerges from seed coat through soil. As it grows up, it takes the shape of hairpin, known as hypocotyl arch. Epicotyl structures, plumule, are protected by two cotyledons from any kind of mechanical damage. When hypocotyl arch emerges out from soil, it becomes straight, which is triggered by light. Cotyledons spread apart exposing epicotyl, which contains two primary leaves and apical meristem. In many dicots, cotyledons supplies food stores to developing plant and also turns green to produce more food by the process of photosynthesis.
Germination in monocots
During germination of grass seeds such as oats or corn, primary root emerges from the seed and fruit and grows down. Then, primary plant's primary leaf grows up. It is protected by a cylindrical, hollow structure known as coleoptile. Once the seedling grows above soil surface, growth of coleoptile is stopped and it is pierced by primary leaf.
germination
Germination.
seed germination does not takes place in flo.wers
Seed germination in gram is hypogeal
The cotyledon of the seed develops into a seedling at the time of germination.
germination
germination is the process of a seed sprouting and growing.
Ice Plant - Dorotheanthus bellidiformis (Mesembryanthemum criniflorum) Germination ~ Seedpod ~ Seed ~ Seedling ~ Flower Indian almond - Terminalia catappa Seed Indian Almond - Terminalia sericocarpa Seed Indian Bean - Dolichos lablab (Lablab purpureus) Germination ~ Seedpod ~ Seed ~ Seedling Indian Bean Tree - Catalpa bignonioides Germination ~ Seedpod ~ Seed ~ Seedling Indian Shot - Canna Germination ~ Seedpod ~ Seed ~ Seedling Ivory Bells - Campanula alliarifolia Seed ~ Flower Ivory Thistle - Ptilostemon afer Germination Ivy - Hedera helix Seedling Iberis Seedpod ~ Seed ~ Seedling Iberis pruitii Germination ~ Seed ~ Seedling Iberis pruitii Candolleana group Germination Iberis saxatilis Germination Iberis sempervirens pygmaea Germination Iberis umbellata Seedpod ~ Seed ~ Seedling ~ Flower Illicium anisatum Seed Impatiens balsamina Germination ~ Seedpod ~ Seed ~ Seedling Impatiens 'Dwarf Mixture' Germination Impatiens 'Expo' Germination Impatiens glandulifera (roylei) Germination ~ Seed ~ Seedling Impatiens x walleriana hybrids Seedpod ~ Seed ~ Seedling ~ Flower Incarvillea compacta Germination Incarvillea delavayi Germination Incarvillea maireiGermination Incarvillea mairei mairei Germination Incarvillea mairei var Alba Germination Incarvillea sinensis Alba Germination Indigofera Seedpod ~ Seed ~ Seedling Indigofera decora Germination Indigofera gerardiana Germination ~ Seed ~ Seedling Indigofera heterantha Germination Indigofera pendula Germination Iochroma australis Seedpod ~ Seed ~ Seedling Ipomoea brasiliensis Germination Ipomoea lobata Seed Ipomoea pes-caprae Germination ~ Seed Ipomoea sloteri Seed Ipomoea (Convolvulus) tricolor Seedpod ~ Seed ~ Seedling Ipomoea violacea Seedpod ~ Seed ~ Seedling Ipomoea x walleriana hybrids Germination Iris Seedpod ~ Seed ~ Seedling Iris bucharica Germination Iris decora Germination Iris douglasiana Germination Iris ensata Germination Iris innominata Germination Iris laevigata Germination Iris orientalis Germination Iris pseudacorus Seed Iris pumila Germination Iris setosa Alba Germination Iris sibirica Germination ~ Seed Iris sikkimensis Germination Iris tectorum Germination ~ Seed ~ Seedling Isoplexis Seedpod ~ Seed ~ Seedling Isoplexis canariensis Seed ~ Seedling Isoplexis sceptrum Germination Ixia polystachya Germination Ixiolirion sp Germination Ixora coccinea Germination ~ Seedpod ~ Seed ~ Seedling Source: http://theseedsite.co.UK/plantindex.HTML
Germination.
seed germination does not takes place in flo.wers
more chlorine = less seed germination
Seed germination in gram is hypogeal
The contents of a seed are used up after germination by the seedling growing from it.
The steps on the process of seed germination are the following: Absorption of water ; Hydration of tissue ; Initial respiration=E(ATP) ; Activation of enzyme system ; Initial cell division and elongation ; Increased rate of respiration ; Increased rate in cell division and elongation ; Cellular differentiation ; Increased reducing sugar content ; and Embryo emergence........jaja....tapus
Yes because of Lauren Hallas.
Seed germination requires the proper combination of oxygen, temperature, moisture and light. As the seed takes up water, it activates enzymes that direct the process of germination.
Viviporus germination is that type of germination in which seed germinate inside the fruit.