Answer:
The correct answer is option D. the adaptive immune system.
Explanation:
The adaptive immune system is the immune system that takes place after the first exposure to a specific antigen either from vaccination or a pathogen. Adaptive responses are of two types: the cell-mediated and humoral immune response, the cell-mediated immune response occurs with the help of T cells, and where is humoral immune response is B cells and antibodies.
Vaccination targets the adaptive immune system as they produce antibodies against the pathogen provided by vaccination.
Thus, the correct answer is option D. the adaptive immune system.
In certain flowering plants, the flower contain more stamen than pistil to increase chances of pollination.
The stamen is the male reproductive part of a flower and the pistil is the female reproductive part of the flower.
More stamen means more pollen. By producing more stamen and therefore more pollen, the chances of pollen coming into contact with the pistil are much higher especially since pollination depends on either wind or insects.
However, not all flowering plants have this arrangement.
Answer:
In most eukaryotes, the nuclear envelope fragments, but in diatoms and dinoflagellates, it remains intact.
Explanation:
From google- If you eat too much sugar your body's demand for insulin increases.Insulin is a hormone in which it helps the body turn food into usable energy.When levels of insulin are consistent ly high the body's sensitivity to hormone reduces in which then glucose will build up in blood.
