It's likely an illustration of competition. Bob the plant and bacteria must fight for the same resources, and neither population can take full advantage of the resources available.
protein is nutrition supply for the body and it also builds strong tissue
The answer is (b.) fertilization
The fertilization is the stage where the egg cell or the
so-called ovum fused with the sperm cell which eventually leads the development
of the embryo or the zygote. The Embryogenesis starts when the zygote undergoes
mitotic divisions or also known cleavage process.
During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote.
look up in ur book meiosis which will explain more