Which of the following relationships is an example of mutualism?
A. Mosquitoes eat the blood of cows, passing along disease.
B. Barnacles live on a whale but do not harm the whale.
C. Insects get food from flowers and help the flowers reproduce.
D. A fish lives in coral, getting protection from the coral.
The Correct Answer and Explanation is:
The correct answer is C. Insects get food from flowers and help the flowers reproduce.
Explanation of Mutualism
Mutualism is a type of symbiotic relationship between two species where both parties benefit from the interaction. In the context of option C, the relationship between insects (such as bees or butterflies) and flowers exemplifies mutualism perfectly. The insects obtain food in the form of nectar, which is essential for their survival and reproductive success. Simultaneously, while collecting nectar, these insects inadvertently assist in the pollination process. As they move from one flower to another, they transfer pollen, facilitating fertilization in the flowers. This process is vital for the reproduction of many flowering plants and is crucial for producing seeds and fruits.
In contrast, the other options represent different types of relationships:
- A. Mosquitoes eat the blood of cows, passing along disease. This describes a parasitic relationship where the mosquito benefits at the expense of the cow, causing harm and potentially transmitting diseases. The cow suffers negative effects, indicating that this interaction is not mutualistic.
- B. Barnacles live on a whale but do not harm the whale. This scenario describes commensalism, where one organism (the barnacle) benefits from the relationship while the other (the whale) is neither helped nor harmed. The barnacle gains a habitat and access to food in the water, but the whale remains unaffected.
- D. A fish lives in coral, getting protection from the coral. This option also suggests a commensal relationship. While the fish may gain protection, the coral is not benefiting from this interaction. In some cases, it can even be argued that the presence of the fish could lead to competition for resources, although the fish does not harm the coral directly.
In summary, option C is the only example of mutualism because it illustrates how both species involved gain significant benefits from their interaction, making it a quintessential example of this ecological relationship.