Members of which of the following group are all parasites?

Explanation

Option A is correct.All viruses are parasites. They are obligate intracellular parasites, which means that they can only replicate inside the cells of a living host. Viruses do not have their own metabolism or ribosomes, so they need to hijack the host cell's machinery in order to reproduce. There are no fungi groups that are all parasites. Some fungi are parasitic, but others are not. Parasitic fungi are those that live on or in other organisms and derive nutrients from them. They can cause diseases in plants, animals, and humans. Not all algae are parasites. Some algae are free-living, meaning they live on their own and do not need to attach to or take nutrients from other organisms. However, there are some algae that are parasitic, meaning they attach to other organisms and derive nutrients from them.Hence, we prefer viruses to algae. Bacteria are not parasites. Parasites are organisms that live on or in other organisms and derive nutrients from them. Bacteria, on the other hand, are single-celled organisms that can live independently or in colonies. They can be found in a variety of environments, including the human body, the soil, and the water.