To enlist: The two important symbiotic partnerships that occur in soil. Concept introduction: Symbiotic relationship or symbiosis is a special type of interaction between two unrelated organisms. These interactions between species include four main ways to interact, such as mutualism, commensalism, competition, parasitism , and predation. The organism involved in the interaction said to be symbionts.

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Answer 1

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 24.3, Problem 13AYP

Summary Introduction

To enlist:

The two important symbiotic partnerships that occur in soil.

Concept introduction:

Symbiotic relationship or symbiosis is a special type of interaction between two unrelated organisms. These interactions between species include four main ways to interact, such as mutualism, commensalism, competition, parasitism, and predation. The organism involved in the interaction said to be symbionts.

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Soil microorganisms, collectively referred to as dizotrophs, fix 90% of the inert nitrogen gas to ammonium and nitrate. There are two-main types of nitrogen-fixing bacteria: free-living (nonsymbiotic) and mutualistic (symbiotic). Describe the mutualistic relationship between Rhizobium and legumes. What is the advantage of using legumes as a cover crop in agricultural systems? A point of interest is that the nitrogenase enzyme complex is highly sensitive to oxygen. This is a major problem for free-living aerobic species such as cyanobacteria and species of the genera Azotobacter and Beiigrinckia. Describe two ways the bacteria can overcome to levels of oxygen in their cells.

Discuss the three stages in the formation of symbiotic nitrogen-fixing associations in legumes.

The microorganisms responsible for symbiotically fixing nitrogen in the nodules on the roots of legume plants are: bacteria actinomycetes algae fungi O autotrophs

Answer 2

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 24.3, Problem 13AYP

Summary Introduction

To enlist:

The two important symbiotic partnerships that occur in soil.

Concept introduction:

Symbiotic relationship or symbiosis is a special type of interaction between two unrelated organisms. These interactions between species include four main ways to interact, such as mutualism, commensalism, competition, parasitism, and predation. The organism involved in the interaction said to be symbionts.

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Answer 3

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 24.3, Problem 13AYP

Summary Introduction

To enlist:

The two important symbiotic partnerships that occur in soil.

Concept introduction:

Symbiotic relationship or symbiosis is a special type of interaction between two unrelated organisms. These interactions between species include four main ways to interact, such as mutualism, commensalism, competition, parasitism, and predation. The organism involved in the interaction said to be symbionts.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 24.3, Problem 13AYP

Summary Introduction