Question

Name and explain the kind of interaction in the following: a)Algae and fungi in the lichens b)Head louse and humans c) Hermit crab and sea anemone.

Answer 1

Explanation:

a.Algae and fungi in the lichens Symbiosis (Lichens): They are dual organisms formed of an algae and fungus. Fungus provides the new materials to the algae and algae prepares the food using the raw materials and the pigments.

b. Head louse and humans Parasitism: Head louse is an ecto parasite living on the hair of the humans. They obtain nutrition from human beings.

c. Hermit crab and sea anemone. Proto cooperation: Hermit crab removes the sedentary sea anemone from its place of attachment over the rock and fixes it over the surface of its mollusk’s home. Sea anemone provides camouflage and protection from predators.

Answer 2

a) Algae and fungi in the lichens :  This is an example of $mutualism$ or $Symbiosis$ relation in which both are benefited. Fungus provides protection and helps in absorbing water to the algae and algae prepares the food using the raw materials and the pigments performing$Photosynthesis.$

b) Head louse and humans Parasitism:  This is an example of $ectoparasitism,$ here the parasite lives outside the body of the host. The parasite is referred to in particular as an $ectoparasite$. This is a non-mutual relationship. In this case head louse sucks blood from human body to get nutrition.

c. Hermit crab and sea anemone: Here we notice $commensalism$, means an association between two organisms in which one benefits and the other derives neither benefit nor harm. Sea anemone gets benefit for moving to places rich in $nutrients$ while the hermit crab neither benefited nor harmed.