Which pair of organisms can be in a parasite host relationship?
There are numerous pairs of organisms that can be in a parasite-host relationship. Some examples include:
1. Fleas and cats/dogs: Fleas are parasites that live off the blood of their hosts, such as cats and dogs.
2. Mosquitoes and humans/animals: Female mosquitoes are known to act as parasites, feeding on the blood of humans and animals to extract nutrients for their reproductive cycle.
3. Tapeworms and humans/animals: Tapeworms are intestinal parasites that inhabit the digestive tract of humans and animals, absorbing nutrients from their host's food.
4. Ticks and mammals/birds: Ticks are ectoparasites that feed on the blood of mammals and birds, attaching themselves to their hosts and consuming their blood for survival.
5. Lice and humans/animals: Lice are external parasites that infest the hair and feathers of humans and animals, feeding on their blood or skin secretions.
These examples represent just a small fraction of the wide range of parasite-host relationships observed in nature.