1The relationship inside the lichen found on tree bark is which kind of interaction?
2In one biological relationship the dependent organism sucks food from the body of the organism sheltering it. What happens in this kind of relationship?
3Give the reason: in mutualism both organisms benefit.
4Write the difference between mutualism and commensalism.
5Write the difference between parasitism and mutualism.
6State the types of ecological interaction and describe each with an example.
7Sort the given examples into their kinds of ecological interaction: (a) bees and bumblebees drinking the nectar of flowers, (b) a spider building its web on a tree, (c) a swallow building its nest on a house, (d) bedbugs, fleas and mosquitoes living by sucking animal blood, (e) tapeworms, roundworms and other organisms living inside an animal's body.
8What is the difference between an external parasite and an internal parasite? Write with examples.
9In both predation and parasitism one organism is harmed. How are these two interactions different?