This graph shows the changes in two populations of herbivores in a grassy field.
In the y axis it says number of organisms
in the x- axis it says Time
In the graph A is decreasing , B is increasing, At first they were steady then slightly A decreased and B increased .
A possible reason for these changes is that
(1) all of the plant populations in this habitat decreased
(2)population B competed more successfully for food than population A
(3) population A produced more offspring than population B
(4) population A consumed members of population B
(2)population B competed more successfully for food than population A
From your data, I would pick 2. With B increasing, that eliminates 3 and 4. Since the type of organism is not designated, I am uncertain about 1, but 2 is more likely.
it is cool
To determine the possible reason for the changes in the populations of herbivores shown in the graph, we need to analyze the information provided and consider the options given.
Looking at the graph, we observe that population A is decreasing while population B is increasing. This suggests a shift in the population dynamics between the two groups of herbivores.
Now, let's examine each option:
(1) All of the plant populations in this habitat decreased: This option suggests that the decrease in herbivore population A could be due to a decrease in plant populations. However, the graph only provides information about the herbivore populations, not the plant populations. As such, we cannot definitively determine whether this option is correct or not based on the given data.
(2) Population B competed more successfully for food than population A: This option suggests that the increase in population B could be due to their ability to outcompete population A for food resources. Although it is not explicitly mentioned in the question, competition for resources, such as food, is a common factor influencing population dynamics. Therefore, this option could be a possible reason for the changes in the populations.
(3) Population A produced more offspring than population B: The graph does not provide direct information about the reproduction rates of the populations. Without this information, it would be challenging to determine whether population A produced more offspring than population B. Therefore, we cannot conclude this option to be a definitive reason for the changes in the populations based solely on the given data.
(4) Population A consumed members of population B: The graph does not provide any information about predation or herbivore interactions. Without evidence to support the assertion that population A consumed members of population B, we cannot consider this option as a likely reason for the changes observed in the populations based on the given data.
Considering all the options, the most plausible reason for the changes in the populations shown in the graph is option (2): population B competed more successfully for food than population A. However, it is important to note that without additional information, it is always important to approach conclusions with caution and consider other factors that could influence population dynamics.