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.
Flowers are called reproductive parts of a plant because they contain germcells(sex cells) i.e. pollen grains (male) and ovule (female) . they have sexual mode of reproduction â¦ as it involves the two sexes.here is no single term for non-flowering plants. There are several types of non-flowering plants: bryophytes, seedless vascular plants, and gymnosperms. Mosses and liverorts â¦ are called Bryophytes, the simplest of the non-flowering plants. They lack special food and water conducting tissues found in other plants.