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.
Annual ryegrass (Lolium multiflorum) and perennial ryegrass (Lolium perenne) seeds germinate in five to 10 days. Rough bluegrass (Poa trivialis) seeds take seven to 10 days. Tall fescue (Lolium arundinaceum) seeds germinate in seven to 12 days.Hard fescue (Festuca longifolia) and red fescue (Festuca rubra) seeds take seven to 14 days. Plant 7 to 9 pounds of annual ryegrass seed or 6 to 9 pounds of perennial ryegrass per 1,000 square feet in the fall.uffalograss (Stenotaphrum secundatum) seeds take 14 to 30 days to germinate. Plant 1 pound of Bermudagrass seeds per 1,000 square feet in late spring or early summer. For the same area, plant 1 1/2 to 2 pounds of buffalo grass in spring or fall.