What is the need for plants to have both sexual and asexual means of reproductions?

Explanation

1] Asexual Reproduction: By asexual reproduction a large number of plants can be produced by a small vegetative part in a short span of time.
2] Genetically identical plants can be obtained by asexual reproduction.
3] Vegetative parts of plants can withstand adverse climatic conditions and can germinate into a new plant on return of favourable conditions.
4] Reproduction through sexual means is uncertain hence asexual means is important.
1] Sexual Reproduction: By sexual methods, plants will have genetic variations which results in higher yields as the plant adapts against all odds.
2] The primary advantage of sexual reproduction is that it encourages the survival of a species.
3] Sexual reproduction creates genetic diversity within a species.
4] In sexual reproduction there is a natural level of disease resistance throughout the species.
5] Genetic variation can lead to evolutionary advancements.