This picture represents humoral immunity, please read through it, and if you dont understand which option is your answer then i would recommend you read more about this topic, if you want it to be done fast, you can read this http://www.s-cool.co.uk/a-level/biology/immunity/revise-it/the-third-line-of-defence
I hope you can come up with the answer on your own as it will be a good thing for you in your future exams :)
Surely i can help you if you dont understand something so just ask :D
Answer:
C. a chemical treatment.
Explanation:
In this case we would be talking about a chemical treatment, since the application of an artificial compound is made, and it is not clarified that it was "ecofriendly".
On the other hand, the question clarifies that the farmer is suffering from the plague. This indicates that he is not preventing it (Integrated pest management), he is treating it.
Finally, it should not be considered as an agronomic treatment, since no real modifications are being made to the way the field is managed.
-In Africa savanna more wildebeest are born than the environment can support. As a result over a period of years individuals that are well suited to the environment reproduce, and those that have lesser adaptations die before they reproduce. This is referred to as natural selection.
The answer is <span>B. meiosis.
All cells in an organism are diploid (2n). Only reproductive cells are haploid cells (n). Mitosis is a division of a cell into two daughter cells identical to the mother cell. Meiosis is a cell division during which the number of chromosomes is reduced by half (from 2n to n). So, reproductive cells (n) are created by meiosis.
Cytokinesis is the phase during mitosis and meiosis.</span>
