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.
1 Cleistogamy: is self-pollination that occurs before the flower opens. 2  The pollen is released from the anther within the flower or the pollen on the anther grows a tube down the style to the ovules. 3  It is a type of sexual breeding, in contrast to asexual systems such as apomixis. Plants that can pollinate themselves and produce viable offspring are called self-fertile. 2  Plants that cannot fertilize themselves are called self-sterile, a condition which mandates cross pollination for the production of offspring. 3  Cleistogamy: is self-pollination that occurs before the flower opens.