1 Addresseeâs business title, when required. 2  When an individual holds more than one position in a company, your decision to use all titles or just one will depend on the purpose of the letter and the recipientâs preference. 3  Do not substitute a business title for a courtesy title, however. 4  Address your letter to âMr.
Firstly, pollination is the transfer of pollen from the anther (male organ of the flower) to the stigma (female organ of the flower) of the same or different flower. Secondly, fertilization occurs once the pollen grain reaches the stigma, it produces a pollen tube, which grows down through the style to the ovary.
Fertilization in humans. The sperm and ovum unite through fertilization, creating a zygote that (over the course of 8-9 days) will implant in the uterine wall, where it will reside over the course of 9 months.his is the point when fertilisation actually occurs; pollination and fertilisation are two separate processes. The nucleus of the other sperm cell fuses with two haploid polar nuclei (contained in the central cell) in the centre of the gametophyte.