Answer:
dismissed the idea that species are constant and emphasized the importance of variation and change in populations
Explanation:
- Darwin and Wallace were the two scientists that contributed to the theory of evolution by natural selection.
- According to their ideas, the mechanisms that lead to evolution is natural selection.
- The idea for natural selection stems from the fact that the available resources are limited in nature and hence, there will be competition for survival and only the individuals that will have heritable traits that will favor their survival under such competition would be able to live and thus, produce more offsprings with similar traits and hence, this will lead to evolution.
- This theory of natural selection thus emphasized that the traits possessed by organisms are not constant but are variable and the populations constantly change over time.
Answer:
b: physiological adaptation
Peritrichous refers to the bacteria having flagella all over the surface of the bacteria. The monotrichous bacteria have only one flagella. The phototaxis refers to the movement of the bacteria towards and away from the light. The movement of bacteria towards or away from a chemical stimulus is referred as chemotaxis.