Design speeds for frontage roads are a factor in the design of the roadway. For consistency, design speeds should be used that match values used for collector streets or highways. For urban frontage roads, the desirable design speed is 50 mph [80 km/h] and the minimum design speed is 30 mph [50 km/h].
Different plants reproduce in different ways. Some plants reproduce asexually, others do use a type of sexual reproduction. Flowering plants in particular reproduce both sexua â¦ lly and asexually. Reproduction in flowering plants involves the production of gametes, the transfer of the male gametes to the female ovules is through pollen.
Plants have two methods of reproduction, asexual reproduction and sexual reproduction. Asexual reproduction is cloning. A piece of a plant may root or sprout and grow into a new plant which is genetically identical with the parent.ome seeds also are contained in, or attached to, structures which help the seeds to be carried to other places that may be suitable for them. Asexual Reproduction. Many plants are able to reproduce asexually. Some plants send up shoots from their roots and form big clumps of stalks and leaves.