<span>The role of the pollen is for the sperm to reach the egg. In the process of transportation, a lot of pollen grains can get lost and therefore there is greater need for it to be more than the ovules, since the eggs do not have to be transported anywhere. </span>
Answer:
c. Vasodilation causes arterial diameter to increase in the exercising skeletal muscle
Explanation:
Cardiac output increases blood pressure due to increased pumping action of the heart. To protect the blood pressure to rise to the fatal levels during exercise or any other activity of excessive muscle contraction, blood vessels are stimulated to dilate.
Dilation of arteries dissipates some of the blood pressure. The arteries with larger diameter have less blood pressure than the arteries with a narrow cavity under the conditions of the same cardiac output. Therefore, the dilation of arteries Dilation does not allow the blood pressure to rise to the harmful levels.
In the scenario,in which the type of organism that can first move into another area after a primary disturbance then would be C. organisms who do not reproduce often. Hope this is the answer and would be of great help them.
Answer:
Explanation:
Several conclusions can be drawn from this observation;
1. The adaptation for fur colour in the mice from both location was similar, this could be because both environments have almost similar conditions.
2. It is also an indication that the dark fur colour may have evolved independently in both populations.
3. Two completely different mutations in two separate genes can generate the same phenotype.