1.
Symbiosis is defined as:
Correct Answer
B. Degrees of close relationship between organisms of different species.
Explanation
The correct answer is "degrees of close relationship between organisms of different species." Symbiosis refers to the interaction between two different species, where both organisms benefit from the relationship. It can take various forms, such as mutualism (both organisms benefit), commensalism (one organism benefits while the other is unaffected), or parasitism (one organism benefits at the expense of the other). This concept is widely studied in ecology and helps to understand the complex interactions between different species in an ecosystem.
2.
Mutualism is defined as
Correct Answer
B. Both species benefit from relationship
Explanation
Mutualism is a type of symbiotic relationship where both species involved benefit from the interaction. This means that both species gain advantages such as food, protection, or reproduction from their association with each other. It is a mutually beneficial arrangement where both species rely on each other for survival and reproductive success.
3.
Commensalism is defined as
Correct Answer
C. One species benefits while the other is unaffected from relationship
Explanation
In commensalism, one species benefits while the other is unaffected from the relationship. This means that one species gains an advantage or benefit from the interaction, such as obtaining food or shelter, while the other species is not affected positively or negatively. It is a type of symbiotic relationship where only one species benefits, while the other remains neutral.
4.
Parasitism is defined as:
Correct Answer
A. One species benefits while the other is harmed from relationship
Explanation
Parasitism is a type of relationship where one species benefits while the other is harmed. In this relationship, the parasite benefits by obtaining nutrients or resources from the host, while the host is negatively affected by the interaction. This can include physical harm, reduced reproductive success, or even death. The parasite relies on the host for its survival and reproduction, while the host suffers from the relationship.
5.
Pollination is an example of
Correct Answer
C. Mutualisn
Explanation
Pollination is an example of mutualism because it is a mutually beneficial relationship between plants and pollinators. Plants rely on pollinators, such as bees or birds, to transfer pollen from the male reproductive organs to the female reproductive organs of flowers, which allows for fertilization and the production of seeds. In return, pollinators receive nectar or pollen as a food source. Both parties benefit from this interaction, making it a mutualistic relationship.
6.
A barnacle attatching to shell and therefore gaining a place to live and, presumably, the scallop is not harmed is an example of:
Correct Answer
B. Commensalism
Explanation
The given scenario describes commensalism, which is a type of symbiotic relationship where one organism benefits while the other is neither harmed nor benefited. In this case, the barnacle benefits by gaining a place to live, while the scallop is not harmed.
7.
A mosquito feeding on humans blood is an example of
Correct Answer
A. Parasitism
Explanation
A mosquito feeding on human blood is an example of parasitism because the mosquito benefits by obtaining nourishment from the blood of the human, while the human is harmed by the mosquito's bite. In parasitism, one organism (the parasite) benefits at the expense of another organism (the host).
8.
What type of relationship is Mutualism?
Correct Answer
B. Both species involved benefit from the relationship
Explanation
Mutualism is a type of relationship where both species involved benefit from the relationship. In this type of symbiotic interaction, each species provides some kind of resource or service that the other species needs, resulting in a mutual advantage. This can include things like protection, food, or reproduction. Both species rely on each other for survival and reproduction, and neither is negatively affected by the interaction.
9.
There is one more symbiotic relationship that is not considered completely symbiotic because the relationship between the two species is not that close. What is this fourth symbiotic relationship?
Correct Answer
B. Mimicry
Explanation
Mimicry is considered a fourth symbiotic relationship that is not completely symbiotic because the relationship between the two species involved is not as close as in other symbiotic relationships. In mimicry, one species imitates the appearance or behavior of another species to gain some advantage, such as protection or access to resources. While there may be some benefits for the imitating species, it does not rely on the other species for survival in the same way as in mutualism or parasitism. Therefore, mimicry is a unique form of symbiosis that is not as intimate as other types.
10.
Symbiosis is always ________________________.
Correct Answer
A. Inter-specific
Explanation
Symbiosis is always inter-specific because it refers to a close and long-term interaction between two different species. In this type of relationship, both species benefit from each other's presence. It can take different forms such as mutualism, where both species benefit, or parasitism, where one species benefits at the expense of the other. This inter-specific interaction is essential for the survival and functioning of many ecosystems, as it promotes cooperation and the exchange of resources between different species.