Formation of vegetative and generative cells, Biology

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

Posted Date: 1/23/2013 1:29:21 AM | Location : United States







Related Discussions:- Formation of vegetative and generative cells, Assignment Help, Ask Question on Formation of vegetative and generative cells, Get Answer, Expert's Help, Formation of vegetative and generative cells Discussions

Write discussion on Formation of vegetative and generative cells
Your posts are moderated
Related Questions
Spermatophores Many non-chordates do not release free sperms during copulation. They have a mechanism to bundle and enclose a number of sperms in a sheath usually made of gela

Explain the Advantages of Double Beam Method? The double beam method has advantage over single beam as it automatically corrects, for the change in light transmission, through

what is common between aquatic and terrestrial plants

If children obtain half their genes from one parent and half from the other parent, why aren't siblings identical?

Q. What are the events that mark the end and the beginning of the first interphase period? What happens inside the cell in this period? The initial interphase period is the G1.

Water Stress - Responses of Plants to Stress Water stress in a plant can result from drought, excess salinity in the soil and very low or high temperatures. It has been found

Q. What is the main molecule responsible for the absorption of photic energy for photosynthesis? And where is that molecule located in photosynthetic cells? The chlorophyll mol

Indian tick typhus Indian tick typhus (Mediterranean spotted fever) is a tick-borne rickettsial infection caused by Rickettsia conori and is characterized by fever and a chara

Variation exhibited in shared traits present in a population is due to alleles of the shared genes. can be influenced by interactions of alleles of multiple genes. Can be influence

lesson plan practical requirements