What chromosome set is typical for sperm and pollen grain cells of pine seed. Explain from which initial cells and as a result of what division these cells are formed
1. Sperm — n, in the cells of the pollen grain — n. 2. Sperm are formed from cells of the pollen grain (generative cell) as a result of mitosis. 3. Pine pollen grain cells develop from haploid spores by mitosis.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.