Question

In the sexual mode of reproduction, greater diversities are generated.
A. True
B. False

Answer 1

Reproduction is one of the most fundamental processes of living beings. It is a biological process by which new individuals are born from parents. There are two modes of reproduction namely, the sexual mode of reproduction and the asexual mode of reproduction.

Complete answer: Asexual mode of reproduction: Reproduction, where the fusion of gametes does not occur, is called the asexual mode of reproduction. In this mode of reproduction, chromosome number does not vary. The offspring produced is exactly similar to that of the parent. The asexual mode of reproduction is achieved by, budding, fission, vegetative propagation, fragmentation, parthenogenesis. In an asexual mode of reproduction, spores are formed and that formation of spore is by the process of mitosis.
Sexual mode of reproduction: Reproduction, where the fusion of gametes occurs, is called the sexual mode of reproduction. Two parents are involved. Gametes with the single set of the chromosome are fused to form a diploid set of chromosomes. The male gamete may be motile or non-motile i.e. flagella may be present or may not be present. But female gametes are always non-motile. This fusion of different gametes leads to the formation of a zygote. Here this zygote has chromosomes from both the parents, i.e. from mother and father. The combination of two gametes results in variations. These variations are not only at the phenotypic level but are also present at the genotypic level. Sexual reproduction is of three types- isogamous, anisogamous, and oogamous. Maximum variations occur because of independent assortment and crossing over during the zygote formation.
Hence, option A is the correct answer

Note: Out of three types of sexual reproduction, oogamous is a highly advanced type. In isogamous reproduction, both male and female gametes are morphologically and structurally similar. In anisogamous type reproduction both male and female gametes are morphologically and structurally different.