Customer Service Chat
Get quote & make Payment
Fertilisation is the process of fusion of male and female gametes. For fusion of male and female gametes, pollen grains have to reach the surface of the stigma.
Pollen grains received by stigma germinate and give rise to pollen tubes. Only one pollen tube finally reaches the embryosac.
This tube will have 2 male nuclei, which migrate to the tip of pollen tube at the time of fertilisation.
One male gamete approaches the egg and fuses with egg to form a diploid (2n) zygote. This is first fertilisation.
The other male gamete reaches the secondary nucleus and fuses with it to form endosperm nucleus which will be triploid (3n). This is second fertilisation in embryosac.
In this way, diploid zygote is formed by union of male and female gametes in embryosac of ovary and triploid (3n) endosperm nucleus is also formed during fertilisation. With this fertilisation is completed.
Posted Date: 8/29/2012 6:22:56 AM | Location : United States
Ask an Expert
Fertilisation, Assignment Help, Ask Question on Fertilisation, Get Answer, Expert's Help, Fertilisation Discussions
Write discussion on Fertilisation
Your posts are moderated
Write your message here..
Define risk assessment, Define Risk assessment Risk assessment has ...
Define Risk assessment Risk assessment has been described as the process of organizing information concerning a particular risk in a systematic way so that the dec
Laws governing ocular movements, Laws Governing Ocular Movements Herin...
Laws Governing Ocular Movements Hering's Law of Equal Innervation states that equal and simultaneous innervation flows from the brain to yoke muscles in all binocular movement
Define diagnostic criteria for anorexia nervosa, Define Diagnostic Criteria...
Define Diagnostic Criteria for Anorexia Nervosa? Table gives the American Psychiatric Association diagnostic criteria for anorexia nervosa. Although the manual does not use bod
Phylum Coelenterata, What are the classes in Phylum coelenterata?
What are the classes in Phylum coelenterata?
Define the proteins requirement to avoid underweight problem, Define the Pr...
Define the Proteins requirement to avoid underweight problem? Proteins are required for tissue building, as well as, to take care of the daily wear and tear. Under weight indiv
Explain deformaties of the cliest wall should be noted, Explain Deformaties...
Explain Deformaties of the Cliest wall should be Noted a) Pectus carinatum (pigeon chest): may be associated with Marfan syndrome. b) Pectus excavatum: commonly seen in Marfan
What are enzymes, What are enzymes? What is the importance of enzymes for l...
What are enzymes? What is the importance of enzymes for living beings? Enzymes are proteins that are catalysts of chemical reactions. From Chemistry it is called that catalysts
Explain the deficiency and toxicity of vitamin a, Explain the Deficiency an...
Explain the Deficiency and Toxicity of vitamin A? Who defines VAD as tissue concentrations of vitamin A low enough to have adverse health consequences even if there is no evide
What is lymphatic network, What is Lymphatic Network? The lymphatic net...
What is Lymphatic Network? The lymphatic network consists of the lymphatic vessels, which circulate lymph throughout the body. Lymph is a liquid which carries out exchange of g
Explain first and second degree burn -classification of burn, Explain First...
Explain First and second degree burns - Classification of Burns? First- and second-degree burns heal in days to weeks without scarring. Deep second- degree and small (less than
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
Why Us ?
~24x7 hrs Support
~Quality of Work
~Time on Delivery
~Privacy of Work
Human Resource Management
Literature Review Writing Help
Follow Us |
T & C
Copyright by ExpertsMind IT Educational Pvt. Ltd.