provide the barrier that marks the boundaries of a cell.
Answer:
It is true that one-toed horse of today steadily evolved from its five-toed ancestor.
Explanation:
- Evolution is the law of nature.There is a continuous process of evolution in each biological species in nature.
- Similarly, horses had 5 toes millions of year back, but according to the theory of gradualism their use decreased and toes started fusing.
- Now, its only one toe at present but the vestigial left over provides the solid evidence for the fact that horses had 5 toes in the past.
A mold was developing in some of the culture dishes used by Sir Alexander Fleming and was eliminating some of the bacterial population. The hypothesis is that the mold was generating a chemical, which was toxic to the bacteria in the dishes and killed them.
The hypothesis was examined by separating the Penicillium and administering it into the solution of nutrient broth. After the growth of Penicillium it was withdrawn from the broth. The broth was then eventually supplemented to the bacteria and the bacteria died. Thus, it can be concluded that the hypothesis is supported.
type of bacteria shown is spirochaetes
