Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. In fact, each species of plants and animals has a set number of chromosomes. A fruit fly, for example, has four pairs of chromosomes, while a rice plant has 12 and a dog, 39. Top of page.
The germination time for grass seed ranges from 5 to 30 days depending on the variety. It can be even longer than this in cooler temperatures. This is how long it will take to actually see the grass growing. Until this point, the seed, or the soil and mulch in contact with the seed, must stay moist.
Some even flower the first year from seed. Anise hyssop (Agastache): Seeds can germinate in less than a week, but can also take as long as a month. Plants grow 3 to 4 feet tall and sport spikes of lavender flowers that are irresistible to bees and butterflies.Zones 4 to 9.Black-eyed Susan (Rudbeckia) Seeds germinate in about 3 weeks.nise hyssop (Agastache): Seeds can germinate in less than a week, but can also take as long as a month. Plants grow 3 to 4 feet tall and sport spikes of lavender flowers that are irresistible to bees and butterflies. Zones 4 to 9. Black-eyed Susan (Rudbeckia) Seeds germinate in about 3 weeks.