the study of organisms that derive nourishment and protection from another living organisms known as hosts is called?
The Correct Answer and Explanation is :
The study of organisms that derive nourishment and protection from another living organism, known as hosts, is called parasitology.
Explanation:
Parasitology is a branch of biology that focuses on parasites, their hosts, and the relationship between them. A parasite is an organism that lives on or inside another organism, called the host, and benefits by deriving nutrients at the host’s expense. Parasitology encompasses the study of various types of parasites, including protozoa, helminths (worms), and ectoparasites (such as ticks and lice). It also includes the investigation of their life cycles, modes of transmission, and the effects they have on their hosts.
Parasites can be classified into three main categories:
- Protozoa – single-celled organisms that can infect the blood, tissue, or intestines of the host. For example, Plasmodium species, which cause malaria, are protozoan parasites.
- Helminths – these are multicellular worms like roundworms, tapeworms, and flukes that may live in the intestines, tissues, or blood of hosts. Examples include Ascaris (a roundworm) and Schistosoma (a blood fluke).
- Ectoparasites – parasites that live on the surface of the host, such as lice, fleas, and ticks. They can cause skin irritation and may transmit diseases.
Parasites can significantly impact the health of their hosts, often leading to malnutrition, weakening of the immune system, or transmission of other diseases. Parasitology is important not only for understanding the biology of parasites but also for developing treatments and preventive measures against parasitic infections. This field is particularly crucial in tropical and subtropical regions, where parasitic diseases are prevalent and have a major public health impact.
By studying parasites, scientists aim to control and eliminate parasitic diseases that affect humans, animals, and plants.