Rhizobial bacteria are able to live freely in soil as well as within nodules of legume...
Rhizobial bacteria are able to live freely in soil as well as within nodules of legume plants. When they live alone in soil, they never fix nitrogen. What is the best explanation for this phenomenon? Pick one answer.
| A. |
They don't have all the genes for nitrogen fixation and need genes provided by their host plant |
|
| B. |
Nitrogen is readily available in the soil so there is no need to fix N |
|
| C. |
Unlike nodules, N2 is not available for fixing in the soil |
|
| D. |
Rhizobia can only fix N when they are housed in a safe environment away from predators |
|
| E. |
The costs outweigh the benefits of fixing N2 when a plant host is not there to supply sugar in exchange |
Homework Answers
ANS)
--> THE CORRECT OPTION IS E
Nitrogen obsession requires a high vitality consumption just as anaerobic or microaerobic conditions, the two of which can be given by plants, and this clarifies the pervasiveness of cooperative N2 obsession. The rhizobial microbes have every one of the qualities required for nitrogen obsession.
Add Answer to:
Rhizobial bacteria are able to live freely in soil as well as
within nodules of legume...
Under what conditions would you expect mycorrhizal symbiosis to have the most NEGATIVE (least beneficial) fitness...
Under what conditions would you expect mycorrhizal symbiosis to have the most NEGATIVE (least beneficial) fitness consequences for bean plants? A. When they are planted in tropical soils with very low nutrient availability B. When they are planted in Nebraska soils that have abundant soil pathogens C. When they are planted in Nebraska soils to which urea fertilizer has been added D. When they are planted in Nebraska soils to which NPK fertilizer and pesticides have been added E. When...
Concept 37.3 (Nitrogen-Fixing Bacteria): How do legumes form a tight mutualism with Rhizobium bacteria? The Rhizobium...
Concept 37.3 (Nitrogen-Fixing Bacteria): How do legumes form a tight mutualism with Rhizobium bacteria? The Rhizobium bacteria live outside the plant (in the soil) and fix nitrogen while living off some sugars that the plant secretes The legume roots form nodules containing Rhizobium bacteria that fix nitrogen for the plant while receiving sugars and other photosynthetic products from the plant The legume roots form nodules containing Rhizobium bacteria that fix phosphorus for the plant while receiving sugars and other photosynthetic...
"Helps fix nitrogen in soil. Boost pea and bean yields with Garden Soil Inoculant. Simply shake...
"Helps fix nitrogen in soil. Boost pea and bean yields with Garden Soil Inoculant. Simply shake granules into furrows as you plant. It contains nitrogen-fixing bacteria to promote stronger root systems and larger harvests. Easy-to-use sprinkler top makes application a snap. 8.7-oz. container treats a 150' row." This product is recommended for growing plants such as beans and peas, for all of the following reasons EXCEPT: These plants can convert nitrogen gas to ammonia These plants can convert nitrogen...
The enzyme that converts atmospheric nitrogen to ammonia in the nodules of the rhizobium/plant symbiosis is...
The enzyme that converts atmospheric nitrogen to ammonia in the nodules of the rhizobium/plant symbiosis is The greatest source for fixing molecular nitrogen (N_2) to ammonium (NH_4^+) in terrestrial environments is Why is NH_4^+ toxic to all organisms if allowed to accumulate beyond -0.5 mM? The statement above is false - NH_4^+ is not toxic but is instead an important source of nitrogen. NH_4^+ reacts with NADPH (and NADH) to reduce the reducing power in a cell. At pH 7...
please help Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis...
please help
Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis In the interior of an old forest a low number of K-type species dominate the community Species evenness is larger when disturbances are extremely frequent Species richness increases immediately after a disturbance such as a fire, but may decrease later In beach dune environments, a low number of r-type species dominate the community Question 24 (1 point) Some birds follow moving swarms of army...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
Concept 37.3 (Nitrogen-Fixing Bacteria): How do legumes form a tight mutualism with Rhizobium bacteria? The Rhizobium bacteria live outside the plant (in the soil) and fix nitrogen while living off some sugars that the plant secretes The legume roots form nodules containing Rhizobium bacteria that fix nitrogen for the plant while receiving sugars and other photosynthetic products from the plant The legume roots form nodules containing Rhizobium bacteria that fix phosphorus for the plant while receiving sugars and other photosynthetic...
The enzyme that converts atmospheric nitrogen to ammonia in the nodules of the rhizobium/plant symbiosis is The greatest source for fixing molecular nitrogen (N_2) to ammonium (NH_4^+) in terrestrial environments is Why is NH_4^+ toxic to all organisms if allowed to accumulate beyond -0.5 mM? The statement above is false - NH_4^+ is not toxic but is instead an important source of nitrogen. NH_4^+ reacts with NADPH (and NADH) to reduce the reducing power in a cell. At pH 7...
please help
Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis In the interior of an old forest a low number of K-type species dominate the community Species evenness is larger when disturbances are extremely frequent Species richness increases immediately after a disturbance such as a fire, but may decrease later In beach dune environments, a low number of r-type species dominate the community Question 24 (1 point) Some birds follow moving swarms of army...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago