Question

A sedentary Sea anemone gets attached to the shell lining of the Hermit Crab. The association is?

• A. symbiosis
• B. amensalism
• C. ectoparasitism
• D. commensalism

Answer 1

The correct option is D

commensalism

The correct answer is D.

The explanation for the correct answer:

1. Commensalism is an interaction where one species is benefits while the other remains neither harmed nor benefited.
2. A sedentary sea anemone gets attached to the lining of the hermit crab. Hermit crab is benefited and the sea anemone remains unaffected.

The explanation for the Incorrect option:

Option A:

1. Symbiosis is a phenomenon where two organisms maintain a relationship with each other to be mutually benefited.
2. Example- humans and Lactobacillus. In this, both are benefited.

Option B:

1. Amensalism is an association between organisms of two different species in which one is negatively affected & the other remains unaffected.
2. Example- Penicillium is a fungus that produces penicillin, an antibiotic that kills bacteria like Staphylococcus.

Option C:

1. Parasitism is an association where one organism, the parasite, causes harm to another, the host.
2. Ectoparasitism is a form of parasitism where the parasite lives outside the body of the host.
3. Example- The presence of ticks on dogs, causes the ticks to absorb nutrients from the host blood.

Final answer:

A sedentary Sea anemone gets attached to the shell lining of the Hermit crab. The association is commensalism.