A parasitic relationship occurs when one organism lives on or inside another organism and benefits by feeding off of it, often harming the host in the process.
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No, a leech is not a single-cell organism. Leeches are multicellular organisms belonging to the phylum Annelida. They are parasitic or predatory in nature and have a well-developed internal organ system.
Mutualism: Both organisms benefit from the relationship. Commensalism: One organism benefits while the other is unaffected. Parasitism: One organism benefits at the expense of the other, which is harmed.
No, fungi are either saprophytic or parasitic in nature, therefore, these are not equiped for photosynthesis.
Commensalism is a type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed. An example is the relationship between barnacles and whales. Barnacles attach themselves to the skin of whales, gaining a stable surface to live on and access to food particles in the water. The whales are not affected by the barnacles and may even benefit from the barnacles removing parasites from their skin. This demonstrates commensalism in nature as one organism benefits without causing harm or receiving any benefit in return.
In a relationship where one allele is completely dominant over another in genetic inheritance, the dominant allele will always be expressed in the phenotype, while the recessive allele will only be expressed if both alleles are recessive. This is known as complete dominance.