What are parasites and saprophytes

Common Parasites Parasites in vivo There are many kinds of viruses that parasitize in certain living cells, and they directly use the substances in the cells as their own nutrients to live parasitic life. For example, hepatitis virus, HIV virus, tobacco mosaic virus, etc. Some bacteria live in the human body, animals and plants, and are also parasitic organisms, such as Escherichia coli and dysentery bacillus.

There are also single-celled protozoa that are also parasitic. For example, dysentery, amoeba, malaria parasite, etc. Ascaris is a multicellular animal, which is a common parasite in the human intestine and directly absorbs nutrients digested by the human body as its own nutrition.

In addition, there are tapeworms, pinworms, schistosomiasis, etc., all of which are parasites that are harmful to the human body. Body surface parasites Body lice, fleas, etc., which live on the surface of the human body, are common body surface parasites, and they mainly suck human blood as their own nutrition. Some of the fungi that cause tinea pedis live between the toes and soles of the human body, and rely on the absorption of human body fluids as their own nutrition.

Common saprophytes Mushrooms, shiitake mushrooms, fungus, white fungus, monkey's head, reishi mushrooms, etc. are typical saprophytes, and most of them live on dead branches, roots, or places rich in organic matter. Molds such as Aspergillus and Penicillium are also saprophytes, and their bodies are made up of hyphae. Their hyphae spread and grow on the surface of organic matter or extend into the organic matter, and grow erect hyphae with spores of different colors at the tip.

Single-celled yeasts also carry out saprophytic life. The above-mentioned saprophytes are all fungi, and there are many other bacteria that are also saprophytes. For example, spoilage bacteria can decompose animal and plant carcasses and organic matter, and lactic acid bacteria can ferment milk to produce lactic acid to make yogurt.

Planktonic organisms belong to decomposers, whereas parasites are not necessarily decomposers.

Parasites. There is a host Host ... is alive.

1. Saprophytic is a way for organisms to obtain nutrients. Organisms that obtain organic matter from animal and plant carcasses or decaying tissues to sustain themselves are called "saprophytes". Most molds, bacteria, yeasts, and a few higher plants are saprophytes.

The aerobic decomposition of saprophytes in the soil is an essential part of the material cycle.

Parasitism comes from "Guanzi Eight Views", which means that he does not work and lives by exploiting others. In modern times, there is also the meaning that an organism is attached to another organism in order to provide nourishment, provide protection, or reproduce in order to survive.

Extension: parasitism.

Cited explanations. 1. Living dependent on others.

1, "Guanzi Eight Views": "There is a landed monarchy, but not hard work, and the parasitic monarch is also." Qu Qiubai "Chronicles of the Hungry Country" III:

So my cousin's parasitic life was in unspeakable mental pain. Ba Jin, "The Garden"; Preface to the French Translation: "Unearned money becomes the cause of the family's woe and the opportunity for the depravity of the offspring.

2. The rich parasitic life caused a young man to drown in the river, a young master to die of illness in prison, a son to drive away his father, and a wife to deny her husband. ”

2. One organism lives inside or outside the body of another. It also refers to an organism that grows by attaching itself to other things.

1, "Poetry, Xiaoya, Touben" "Tsuru and Nu Di, Applied to Pine and Cypress" Mao Biography: "Tsuta, parasitic also." "Hanshu Dongfang Shuo Biography":

The Guo Sheren are parasitic on the covered trees, which makes Shuo shoot them. Yan Shigu notes: "Parasites, mushrooms and the like, on the day of drenching, are born from trees, and there are a number of people around the circle, which is also called parasitism in the customs of today's passes."

2. Those who are not parasitic for the Tsuta, and there are (forest) branches and leaves. Jin Cao Ji "Gift Stone Chong" poem: "Duckweed depends on the water, parasitic attached to the forest."

Qing Wang Shizhen "Chibei Occasional Talk, Talking about Different Four, Songding Shenglan": "There are orchid parasites, between the long pine branches, can be long, and the weeds hang in all directions. ”

Parasitism is the ingestion of nutrients from the living cells of the parasite, and the host itself does not lose the ability to live. Saprophytic, which is the ingestion of nutrients from dead cells, has lost life or partially lost life of the host itself.

From the perspective of the method of nutrient intake by pathogenic bacteria, most of the field diseases are parasitic bacteria and facultative saprophytes, and some postharvest diseases are postharvest diseases with bacteria in the field, and some are infected after harvest. Most of the postharvest susceptible bacteria are parasitic bacteria and saprophytic bacteria.

Parasitism is that animals and plants are attached to another organism to survive, animals have mites, roundworms, etc., and plants have mulberry parasitism, dodder seeds, etc. Saprophytic refers to animals and plants living on decaying animal and plant carcasses, such as maggots.

Saprophytic is a way for an organism to obtain nutrients. Parasitism (parastisu) is the relationship between two organisms living together, one party benefits, the other party suffers, and the latter provides nutrients and a place to live for the former, and this biological relationship is called parasitism.

Saprophytic: Obtaining organic matter from dead organisms; Parasitism: Grows in other organisms for a long time and acquires organic matter.

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Parasitism is the condition in which one organism inhabits the surface or body of another organism and obtains nutrients directly from it to cause damage.

Saprophytic is a way for an organism to obtain nutrients. Organisms that obtain nutrients from animal and plant carcasses or decaying tissues to sustain themselves are called "saprophytes".

Saprophytic is the lifestyle of some microorganisms. They live by decomposing organic matter or dead organisms parasitism: a form of interaction between xenogeneous organisms: one party to the interaction benefits (the parasite) and the other suffers (the host or host).

Saprophytic: A way in which organisms obtain nutrients. Organisms that obtain organic matter from animal and plant carcasses or decaying tissues to sustain themselves are called "saprophytes". Most molds, bacteria, yeasts, and a few higher plants are saprophytes.

Parasitism is as follows: that is, two organisms live together, one party benefits, the other party suffers, and the latter provides nutrients and a place to live for the former, and the relationship between this kind of organisms is called parasitism. The main parasites are bacteria, viruses, fungi, and protozoa.

Symbiosis: refers to the close mutually beneficial relationship between two different organisms. There is a "symbiosis" between animals, plants, fungi, and any of the three. In a symbiotic relationship, one partner provides help to the other in favor of survival while also receiving help from the other.

Parasites: 1. Viruses parasitize in certain living cells, and they directly use the substances in the cells as their own nutrition to live parasitically. For example, hepatitis virus, HIV virus, tobacco mosaic virus, etc.

2. Some bacteria live in the human body, animals and plants, and are also parasitic organisms, such as Escherichia coli, dysentery bacillus, etc.;

3. There are also some single-celled protozoa that also live parasitic; For example, dysentery, amoeba, malaria parasite, etc.;

4. Ascaris is a multicellular animal, which is a common parasitic parasite in the human intestine, tapeworm, pinworm, schistosomiasis, etc., all of which are parasites harmful to the human body;

5. Body lice, fleas, etc. living on the surface of the human body.

Saprophytes: 1. Mushrooms, shiitake mushrooms, fungus, white fungus, monkey's head, Ganoderma lucidum, etc. are typical saprophytes, most of them live on dead branches, roots or places rich in organic matter;

2. Molds such as Aspergillus and Penicillium are also saprophytes, and their bodies are composed of hyphae;

3. Single-celled yeasts also carry out saprophytic life;

4. A variety of bacteria are also saprophytes. For example, spoilage bacteria can decompose animal and plant carcasses and organic matter, and lactic acid bacteria can ferment milk to produce lactic acid to make yogurt.

Pinyin: wù fǔ chóng shēng

Explanation: Worms only grow when things rot. In the metaphor of the occurrence of calamities, there is always an internal cause of failure. It is also a metaphor that if you have a weakness yourself, others can take the opportunity to strike.

Source: Xunzi Persuasion": "Meat rots out of worms, fish withered beetles." "Brother Jane Song Su Shi's "Fan Zeng Theory": "Things must be stopped from attacking the wild and rotting first, and then insects will be born." Example sentence:

The main differences are the different natures, the different characteristics and the main types of defenses.

1. Different properties: saprophytic: saprophytic is a way for organisms to obtain nutrients; Parasitism: Parasitism is the relationship between two organisms living together, one party is benefited, the other party is harmed, and the latter provides nutrients and a place to live for the former, and the relationship between this organism is called parasitism.

2. Different characteristics: saprophytic is the ingestion of nutrients from dead cells; Parasitism is the ingestion of nutrients from the living cells of the parasite.

3. The main types are different. Saprophytic: Most molds, bacteria, yeasts and a few higher plants are "saprophytes". Parasitic deficiency: The main parasites are bacteria, viruses, fungi and protozoa.