Formation of vegetative and generative cells, Biology

Assignment Help:

Formation of Vegetative and Generative Cells

The division of a pollen grain results in two unequal cells-the vegetative cell and the generative cell. The pollen grain is hereafter known as the male gametophyte because both the cells of this structure carry a single set of chromosomes. Do you recall that gametophyte represents the haploid generation of the life cycle of plant? The larger cell is the vegetative cell and it forms the pollen tube. The smaller cell is known as the generative cell and it produces two sperms by a mitotic division. The position of the generative cell is related to that of the microspore nucleus and the orientation of the spindle. In Figure that before division the pollen nucleus migrates to one side of the pollen grain and comes to rest near the wall. The division involves the formation of an unusual spindle structure.

260_Formation of Vegetative and Generative Cells.png

Figure: Formation of Vegetative and Generative Cells


Related Discussions:- Formation of vegetative and generative cells

Infructescences- pseudofruits and parthenocarpic fruits, What are the infru...

What are the infructescences, pseudofruits and parthenocarpic fruits? The Infructescences are aggregated fruits formed from inflorescences, aggregated flowers. Grape clusters a

Homework, #questiocan you help in a biology question?.

#questiocan you help in a biology question?.

Assessment of development in children, Assessment of Development in Childre...

Assessment of Development in Children The development of a child is studied through various responses which he exhibits following a natural or experimental stimulus. Basical

Which term explain lack of voluntary control of urination, In studies of hu...

In studies of human body, which of the following terms will be used to explain the lack of voluntary control of urination or voiding of bladder? Is it a) Anuria b) Incontine

Explain about the lignans, Explain about the Lignans? Lignans are diphe...

Explain about the Lignans? Lignans are diphenolic compounds formed by dilnerization of 2 cinnamic acid residues. Most lignans apparently pass through the GIT as fibre. Some lig

Types of community, Types of Community On the basis of size and degree ...

Types of Community On the basis of size and degree of relative independence communities may be divided into two types: i) Major Community: These are large-sized, well org

Explain ventilation, Explain Ventilation, Chest Compressions? Even when...

Explain Ventilation, Chest Compressions? Even when the first three defibrillation attempts fail, the best chance of resuscitation still lies in successful defibrillation. Hence

What is diarrhoea, What is diarrhoea? Diarrhoea is characterized by th...

What is diarrhoea? Diarrhoea is characterized by the frequent evacuation of liquid stools, usually exceeding 300 ml, accompanied by an excessive loss of fluids and electrolyte

Access burs through the crown-endodontics principles, Access burs through t...

Access burs through the crown:    Carbide fissure burs : cut through metal ( amalgam alloy or cast metal ) or composite resin.    Porcelain fused to metal : -A round diam

Preparation of the standard curve for haemoglobin, Preparation of the stand...

Preparation of the standard curve for haemoglobin? Label 6 clean dry rest tubes and label them as S1 -S6 Add 5 ml of Drabkin's solution to test tube numbers S2 - S6

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd