Question

which oranisms are microscopic and depend on host organisms for reproduction ​

Answer 1

Answer:viruses

an organism (from Greek organismos) is any individual entity that embodies the properties of life. It is a synonym for "life form".

Organisms are classified by taxonomy into groups such as multicellular animals, plants, and fungi; or unicellular microorganisms such as protists, bacteria, and archaea.All types of organisms are capable of reproduction, growth and development, maintenance, and some degree of response to stimuli. Humans, squids, mushrooms, and vascular plants are examples of multicellular organisms that differentiate specialized tissues and organs during development.

An organism may be either a prokaryote or a eukaryote. Prokaryotes are represented by two separate domains – bacteria and archaea. Eukaryotic organisms are characterized by the presence of a membrane-bound cell nucleus and contain additional membrane-bound compartments called organelles (such as mitochondria in animals and plants and plastids in plants and algae, all generally considered to be derived from endosymbiotic bacteria).Fungi, animals and plants are examples of kingdoms of organisms within the eukaryotes.

Estimates on the number of Earth's current species range from 2 million to 1 trillion,of which over 1.7 million have been documented.More than 99% of all species, amounting to over five billion species, that ever lived are estimated to be extinct.

In 2016, a set of 355 genes from the last universal common ancestor (LUCA) of all organisms was identified.

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Answer 2

$<p style ="color:cyan;font-family: cursive; back-ground:black;font-size:25px;" >Viruses are microscopic biological agents that invade living hosts and infect their bodies by reproducing within their cell tissue. Viruses are tiny infectious agents that rely on living cells to multiply. They may use an animal, plant, or bacteria host to survive and reproduce.$