The number of taxa exhibiting asexual reproduction is drastically reduced in higher plants (angiosperms) and higher animals (vertebrates) as compared with lower groups of plants and animals. Analyse the possible

• In Angiosperms and Vertebrates, sexual mode of reproduction is pronounced.

• Sexual mode of reproduction allows gradual changes in genetic pool, due to recombination.

• It allows the variation and helps the organism to adapt well according to the changing environment.

• In asexual reproduction, no variations are allowed exact copies of parents are produced. It leads to poor adaptability. Hence the organisms with such increased complexity, chose to reproduce sexually.