A plant's entire purpose is to mature and reproduce in order to spread its genetic material through its offspring. This means that they will germinate, produce seeds, flower, and die over a two-year period.Ī plant, for example, must reproduce in order to be considered successful biologically. Biennial flowers are those that have a life cycle that lasts two years. Perennial flowers take a long time to mature they will continue to grow year after year. Annual flowers are those that germinate, produce seeds, bloom, and die all in the same season. If you go to a nursery to buy flowers, you will notice that they are divided into three categories: annual, perennial, and biennial. Some of California's giant redwood trees have lived for hundreds of years, whereas most vegetable plants only live for a season. If you've ever grown plants in a vegetable garden or flowers as a hobby, you're probably aware that they grow at different rates. There are millions of plant species found throughout the world. Many cool-season plants, for example, are relatively unaffected by insect consumers, which are far more abundant during warm weather.

Plants may also evade detection by appearing only during seasons when consumers are scarce. This restriction prevents the accumulation of dense pest populations that short-lived consumers can achieve on long-lived plants. Plants may escape consumers in time or space in addition to defending tissues.Įphemeral plants, particularly those with annual lifecycles, may benefit from temporal escape by having a lifecycle that does not sustain consumers for long enough for them to complete their life cycles.

Some species' seed coats contain a growth inhibitor that can only be washed away by a large amount of water, preventing germination after only a brief shower. In botany, an ephemeral plant can be defined as one that has one or more generations per year, growing only during favourable periods (such as when adequate moisture is available) and passing the unfavourable periods in the form of seeds.

Ephemeral meaning in urdu