The answer is immune system
The plant with the root system is called the rootstock And the portion of the plant with the buds is called the scion
Charles Darwin noticed that among the same species there were variations in traits based upon geographical location. These changes may have evolved from climate differences, predator/prey relationships and food sources. This particular experiment was intended to duplicate natural selection by demonstrating the concepts with artificial selection. The result was that over time, new traits could be bred for. Although there may be more than one correct answer here, the best answer is the first; desirable traits can be selected and bred in offspring.
Mitosis makes two identical daughter cells and Meiosis makes gamete cells
transport, digestion, absorption, elimination
