BiologÍa (Ámbito Ecosistémico)

The correct answer is "al variar la altitud, varían las características de la vegetación" which translates to "as the altitude varies, the characteristics of the vegetation also vary". This conclusion can be drawn from the given diagram showing the vegetation at different elevations of an Andean mountain. The diagram suggests that the type of vegetation changes as the altitude increases or decreases, indicating a relationship between altitude and vegetation characteristics.

The given graph shows the population growth curves of two species, A and B, in the same region. Based on the graph, it can be inferred that species B is an invasive species with a higher reproductive success than species A. This can be concluded because the population of species B is increasing at a faster rate compared to species A, indicating that it is able to reproduce more successfully and establish itself in the region.

The correct answer is "el polen se une con el óvulo en el ovario". This is because the process of fertilization in plants occurs when the pollen, which carries the male gametes, joins with the ovule, which contains the female gametes, in the ovary. This fusion of gametes leads to the formation of a zygote, which develops into a seed.

If the eagles were to disappear from the community, it is expected that the number of mice and snakes would increase. This is because eagles are natural predators of both mice and snakes, and their absence would remove a significant source of predation pressure on these populations. Without the eagles to keep their numbers in check, the populations of mice and snakes would be able to increase more freely.

The explanation for the correct answer is that if insect population A feeds on flowers and population B feeds on leaves, they are consuming different parts of the plant and therefore there is no competition for food resources. Each population is able to obtain their required nutrients without directly competing with each other.

If the organisms that produce food in this ecosystem were extracted, it would most likely result in a decrease in the number of primary consumers, secondary consumers, and decomposers. This is because the producers are the base of the food chain, and their absence would lead to a decrease in the availability of food for the consumers. As a result, there would be a decrease in the population of consumers at all levels, including primary and secondary consumers, as well as the decomposers that rely on dead organic matter for their survival.

If the number of individuals of the species sphere and rectangle decreases drastically, it is likely that the competition between species A, B, and C will increase. This is because with fewer individuals of the prey species, there will be less food available for the predators. As a result, the predators will have to compete more intensively for the remaining prey, leading to an increase in competition between them.

The correct answer is "la dieta D". The passage states that these monkeys require a diet rich in calories due to their high energy consumption. Diet D is the only option mentioned that could potentially provide a high calorie intake.

The correct answer is the graph B because it shows a higher number of adult individuals compared to juvenile individuals, indicating a high predation rate on the adults. The graph also shows a lower number of tadpoles, indicating a lower predation rate on them. This distribution of individuals reflects the limiting factor of predation in the population of wild frogs.

Based on the graph, it can be observed that the abundance of individuals in population 1 decreases after the application of a pesticide. This suggests that the pesticide had a negative impact on population 1, causing a decrease in its abundance. On the other hand, there is no significant change in the abundance of individuals in population 2. This indicates that population 2 is not affected by the pesticide and remains relatively stable. Therefore, the most probable hypothesis is that population 1 functions as a natural control for population 2, regulating its abundance.

If a lake with low initial concentrations of nitrogen is contaminated with waste rich in this element, you would expect that only bacteria type I, which are able to survive in low nitrogen concentrations, would be present before contamination. This is because the other two types of bacteria, type II and type III, are not able to survive in low nitrogen concentrations. Therefore, the pollution would only negatively affect the survival of bacteria type I, while the other types would not be affected or would even thrive in the higher nitrogen concentrations.