A nitrogen-fixing microbe associated with Azolla in rice fields is (1) Tolypothrix (2) Spirulina (3) Anabaena (4) Frankia

A nitrogen-fixing microbe associated with Azolla in rice fields is
(1) Tolypothrix (2) Spirulina (3) Anabaena (4) Frankia
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Answer :

(3) Anabaena
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A nitrogen-fixing microbe associated with Azolla in rice fields is (a) Spirulina (b) Anabaena (c) Frankia (d) Tolypothrix.

Description : A nitrogen-fixing microbe associated with Azolla in rice fields is (a) Spirulina (b) Anabaena (c) Frankia (d) Tolypothrix.

Last Answer : (b) Anabaena

A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is (a) Tolypothrix (b) Chlorella (c) Nostoc (d) Anabaena.

Description : A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is (a) Tolypothrix (b) Chlorella (c) Nostoc (d) Anabaena.

Last Answer : (d) Anabaena.

Select the mismatch. (a) Rhodospirillum – Mycorrhiza (b) Anabaena – Nitrogen fixer (c) Rhizobium – Alfalfa (d) Frankia – Alnus

Description : Select the mismatch. (a) Rhodospirillum – Mycorrhiza (b) Anabaena – Nitrogen fixer (c) Rhizobium – Alfalfa (d) Frankia – Alnus

Last Answer : (a) Rhodospirillum – Mycorrhiza

Select the mismatch : (1) Rhodospirillum - Mycorrhiza (2) Anabaena - Nitrogen fixer (3) Rhizobium - Alfalfa (4) Frankia - Alnus

Description : Select the mismatch : (1) Rhodospirillum - Mycorrhiza (2) Anabaena - Nitrogen fixer (3) Rhizobium - Alfalfa (4) Frankia - Alnus

Last Answer : (1) Rhodospirillum - Mycorrhiza

Which one of the following helps in absorption of phosphorus from soil by plants? (a) Glomus (b) Rhizobium (c) Frankia (d) Anabaena

Description : Which one of the following helps in absorption of phosphorus from soil by plants? (a) Glomus (b) Rhizobium (c) Frankia (d) Anabaena

Last Answer : (a) Glomus

83. Which one of the following is wrong statement ? (1) Nitrosomonas and Nitrobacter are chemoautotrophs (2) Anabaena and Nostoc are capable of fixing nitrogen in free-living state also (3) Root nodule forming nitrogen fixers live as aerobes under free-living conditions (4) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

Description : 83. Which one of the following is wrong statement ? (1) Nitrosomonas and Nitrobacter are chemoautotrophs (2) Anabaena and Nostoc are capable of fixing nitrogen in free-living state also (3 ... living conditions (4) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

Last Answer : Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

The common nitrogen-fixer in paddy fields is (a) Rhizobium (b) Azospirillum (c) Oscillatoria (d) Frankia.

Description : The common nitrogen-fixer in paddy fields is (a) Rhizobium (b) Azospirillum (c) Oscillatoria (d) Frankia.

Last Answer : (b) Azospirillum

Which of the following pairs is of unicellular algae? (a) Laminaria and Sargassum (b) Gelidium and Gracilaria (c) Anabaena and Volvox (d) Chlorella and Spirulina

Description : Which of the following pairs is of unicellular algae? (a) Laminaria and Sargassum (b) Gelidium and Gracilaria (c) Anabaena and Volvox (d) Chlorella and Spirulina

Last Answer : (d) Chlorella and Spirulina

A water-fern, which is used as a green manure in rice fields, is (a) Salvinia (b) Mucor (c) Aspergillus (d) Azolla

Description : A water-fern, which is used as a green manure in rice fields, is (a) Salvinia (b) Mucor (c) Aspergillus (d) Azolla

Last Answer : (d) Azolla

The biofertilizers are (a) Anabaena and Azolla (b) cow dung, manure and farmyard waste (c) quick growing crop ploughed under soil (d) none of these.

Description : The biofertilizers are (a) Anabaena and Azolla (b) cow dung, manure and farmyard waste (c) quick growing crop ploughed under soil (d) none of these.

Last Answer : (a) Anabaena and Azolla

Which of the following organisms is used as a biopesticide ? (l) Azolla (2) Anabaena (3) Rhizobium (4) Trichoderma

Description : Which of the following organisms is used as a biopesticide ? (l) Azolla (2) Anabaena (3) Rhizobium (4) Trichoderma

Last Answer : (4) Trichoderma

Which one of the following plants are used as green manure in crop fields and in sandy soils? (a) Crotalaria juncea and Alhagi camelorum (b) Calotropis procera and Phyllanthus niruri (c) Saccharum munja and Lantana camara (d) Dichanthium annulatum and Azolla nilotica

Description : Which one of the following plants are used as green manure in crop fields and in sandy soils? (a) Crotalaria juncea and Alhagi camelorum (b) Calotropis procera and Phyllanthus niruri (c) Saccharum munja and Lantana camara (d) Dichanthium annulatum and Azolla nilotica

Last Answer : (a) Crotalaria juncea and Alhagi camelorum

The nitrogen fixing bacterium found on root surface of rice

Description : The nitrogen fixing bacterium found on root surface of rice

Last Answer : Ans.Azospirillum

Nitrogen fixing bacteria make combination with cells of the roots of - a) Pulses b) Rice c) Wheat d) Sugarcane

Description : Nitrogen fixing bacteria make combination with cells of the roots of - a) Pulses b) Rice c) Wheat d) Sugarcane

Last Answer : a) Pulses

Nitrogen fixation in root nodules of Alnus is brought about by (a) Frankia (b) Azorhizobium (c) Bradyrhizobium (d) Clostridium

Description : Nitrogen fixation in root nodules of Alnus is brought about by (a) Frankia (b) Azorhizobium (c) Bradyrhizobium (d) Clostridium

Last Answer : (a) Frankia

All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia (a) can induce root nodules on many plant species (b) can fix nitrogen in the free-living state (c) cannot fix specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids (d) like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host’s cortex

Description : All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia (a) can induce root nodules on many plant species (b) can fix ... its host plant through root hair deformation and stimulates cell proliferation in the host's cortex

Last Answer : (b) can fix nitrogen in the free-living state

The richest sources of vitamin B12 are (a) goat’s liver and Spirulina (b) chocolate and green gram (c) rice and hen’s egg (d) carrot and chicken’s breast.

Description : The richest sources of vitamin B12 are (a) goat’s liver and Spirulina (b) chocolate and green gram (c) rice and hen’s egg (d) carrot and chicken’s breast.

Last Answer : (a) goat’s liver and Spirulina

Azolla increases soil fertility for – (1) maize cultivation (2) wheat cultivation (3) barley cultivation (4) rice cultivation

Description : Azolla increases soil fertility for – (1) maize cultivation (2) wheat cultivation (3) barley cultivation (4) rice cultivation

Last Answer : (4) rice cultivation Explanation: The nitrogen-fixing capability of Azolla has led to it being widely used as a biofertiliser for increasing the productivity of rice fields. When rice paddies ... can be inoculated with Azolla., which then quickly multiplies to cover the water, suppressing weeds.

Farmers have reported over 50% higher yields of rice by using which of the following biofertilizer? (a) Cyanobacteria(b) legume-Rhizobium symbiosis (c) Mycorrhiza (d) Azolla pinnata

Description : Farmers have reported over 50% higher yields of rice by using which of the following biofertilizer? (a) Cyanobacteria (b) legume-Rhizobium symbiosis (c) Mycorrhiza (d) Azolla pinnata

Last Answer : (d) Azolla pinnata

Due to which of the following organism, yield of rice is increased? (a) Sesbania (b) Bacillus popilliae (c) Anabaena (d) Bacillus subtilis

Description : Due to which of the following organism, yield of rice is increased? (a) Sesbania (b) Bacillus popilliae (c) Anabaena (d) Bacillus subtilis

Last Answer : (c) Anabaena

Besides providing N Azolla is used for weed control in a). Wheat b). Rice c). Castor d). Linseed

Description : Besides providing N Azolla is used for weed control in a). Wheat b). Rice c). Castor d). Linseed

Last Answer : b). Rice

Azolla increases soil fertility for (1) maize cultivation (2) wheat cultivation (3) barley cultivation (4) rice cultivation

Description : Azolla increases soil fertility for (1) maize cultivation (2) wheat cultivation (3) barley cultivation (4) rice cultivation

Last Answer : rice cultivation

Which of the following species does not have the ability to fix atmospheric nitrogen? (a) Azotobactor (b) Anabaena (c) Nostoc (d) Spirogyra

Description : Which of the following species does not have the ability to fix atmospheric nitrogen? (a) Azotobactor (b) Anabaena (c) Nostoc (d) Spirogyra

Last Answer : (d) Spirogyra

Which aquatic fern performs nitrogen fixation? (a) Azolla (b) Nostoc (c) Salvia (d) Salvinia

Description : Which aquatic fern performs nitrogen fixation? (a) Azolla (b) Nostoc (c) Salvia (d) Salvinia

Last Answer : (a) Azolla

Frankia form symbiotic association with

Description : Frankia form symbiotic association with

Last Answer : Frankia form symbiotic association with

Name a microbe used for the production of Swiss cheese. -Biology

Description : Name a microbe used for the production of Swiss cheese. -Biology

Last Answer : answer:

What microbe that causes influenza?

Description : What microbe that causes influenza?

Last Answer : Feel Free to Answer

Microbe used for biocontrol of pest butterfly caterpillars is (a) Saccharomyces cerevisiae (b) Bacillus thuringiensis (c) Streptococcus sp. (d) Trichoderma sp.

Description : Microbe used for biocontrol of pest butterfly caterpillars is (a) Saccharomyces cerevisiae (b) Bacillus thuringiensis (c) Streptococcus sp. (d) Trichoderma sp.

Last Answer : (b) Bacillus thuringiensis

Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct? (a) Yeast – Statins (b) Acetobacter aceti – Acetic acid (c) Clostridium butylicum – Lactic acid (d) Aspergillus niger – Citric acid

Description : Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct? (a) Yeast – Statins (b) Acetobacter aceti – Acetic acid (c) Clostridium butylicum – Lactic acid (d) Aspergillus niger – Citric acid

Last Answer : (c) Clostridium butylicum – Lactic acid

Which of the following is wrongly matched in the given table? Microbe Product Application (a) Streptococcus Streptokinase Removal of clot from blood vessel (b) Clostridium butylicum Lipase Removal of oil stains (c) Trichoderma polysporum Cyclosporin A Immuno- suppressive drug (d) Monascus purpureus Statins Lowering of blood cholesterol

Description : Which of the following is wrongly matched in the given table? Microbe Product Application (a) Streptococcus Streptokinase Removal of clot from blood vessel (b) Clostridium butylicum Lipase ... Cyclosporin A Immuno- suppressive drug (d) Monascus purpureus Statins Lowering of blood cholesterol

Last Answer : (b) Clostridium butylicum Lipase Removal of oil stains

For retting of jute the fermenting microbe used is (a) methanophilic bacteria (b) butyric acid bacteria (c) Helicobacter pylori (d) Streptococcus lactin.

Description : For retting of jute the fermenting microbe used is (a) methanophilic bacteria (b) butyric acid bacteria (c) Helicobacter pylori (d) Streptococcus lactin.

Last Answer : b) butyric acid bacteria

In a eukaryotic microbe, those sections of a primary RNA transcript that will NOT be translated are called a. Introns. b. Anticodons. c. ―Jumping Genes.‖ d. Exons.

Description : In a eukaryotic microbe, those sections of a primary RNA transcript that will NOT be translated are called a. Introns. b. Anticodons. c. ―Jumping Genes.‖ d. Exons.

Last Answer : a. Introns.

A microbe that is a microaerophilic mesophile would grow optimally at and a. high 02; 30°C b. low 02; 20°C c. no 02; 30°C d. low 02; 37°C

Description : A microbe that is a microaerophilic mesophile would grow optimally at and a. high 02; 30°C b. low 02; 20°C c. no 02; 30°C d. low 02; 37°C

Last Answer : d. low 02; 37°C

Can you explain the Haber-Bosch nitrogen fixing process?

Description : Can you explain the Haber-Bosch nitrogen fixing process?

Last Answer : Here is the most complete description of the reaction that I've found. Yes, ammonia (NH3) is the end result. First, hydrogen is derived from natural gas by another process (described in the ... and hydrogen which allows them to combine with less total energy than they would need to combine directly.

Name some non-symbiotic nitrogen fixing prokaryote. -Biology

Description : Name some non-symbiotic nitrogen fixing prokaryote. -Biology

Last Answer : answer:

Nitrogen fixing bacteria is useful in growing which crop? -Do You Know?

Description : Nitrogen fixing bacteria is useful in growing which crop? -Do You Know?

Last Answer : answer:

$ Nitrogen fixing bateria always live in symbiosis. ! Symbiosis occurs between the organisms of the same species.

Description : $ Nitrogen fixing bateria always live in symbiosis. ! Symbiosis occurs between the organisms of the same species.

Last Answer : $ Nitrogen fixing bateria always live in symbiosis. ! Symbiosis occurs between the organisms of the same species. ... D. If both As and R are wrong.

Select the correct statement: (a) Legumes are incapable of fixing nitrogen (b) Legumes fix nitrogen through bacteria living in fruits root (c) Legumes fix nitrogen only by bacteria present in nodules (d) None of the above

Description : Select the correct statement: (a) Legumes are incapable of fixing nitrogen (b) Legumes fix nitrogen through bacteria living in fruits root (c) Legumes fix nitrogen only by bacteria present in nodules (d) None of the above

Last Answer : Ans. (c)

Non leguminous nitrogen fixing trees

Description : Non leguminous nitrogen fixing trees

Last Answer : Ans. Alnus nepalensis

Nitrogen fixing tree

Description : Nitrogen fixing tree

Last Answer : Ans. Leucaena leucocephala

Free-living nitrogen fixing microorganisms are - (1) Rhizobia (2) Soil fungi (3) Vesicular arbuscular mycorrhiza (4) Blue green algae

Description : Free-living nitrogen fixing microorganisms are - (1) Rhizobia (2) Soil fungi (3) Vesicular arbuscular mycorrhiza (4) Blue green algae

Last Answer : (1) Rhizobia Explanation: Rhizobia are soil bacteria that fix nitrogen (diazotrophs) after becoming established inside root nodules of legumes. Rhizobia require a plant host; they cannot independently fix nitrogen. In general, they are Gram-negative, motile, non-sporulating rods.

Nitrogen fixing bacteria found in the root nodules of leguminous plant is:- (1) Saprophytic (2) Parasitic (3) Symbiotic (4) Autotrophic

Description : Nitrogen fixing bacteria found in the root nodules of leguminous plant is:- (1) Saprophytic (2) Parasitic (3) Symbiotic (4) Autotrophic

Last Answer : (3) Symbiotic Explanation: Many legumes have root nodules that provide a home for symbiotic nitrogenfixing bacteria called rhizobia. This relationship is particularly common in nitrogen-limited conditions. .

Nitrogen fixing bacteria is useful in growing which crop?

Description : Nitrogen fixing bacteria is useful in growing which crop?

Last Answer : Legume

Write an example of nitrogen fixing algae?

Description : Write an example of nitrogen fixing algae?

Last Answer : Cyanobacteria

Name two nitrogen fixing bacteria?

Description : Name two nitrogen fixing bacteria?

Last Answer : Rhizobium & Azetobactor

What is meant by nitrogen fixing bacteria?

Description : What is meant by nitrogen fixing bacteria? 

Last Answer : The bacteria that convert nitrogen of the air into compounds of nitrogen and thus increase fertility of the soil are called nitrogen fixing bacteria.  

The most thoroughly studied of the known bacteria- plant interactions is the (a) cyanobacterial symbiosis with some aquatic ferns (b) gall formation on certain angiosperms by Agrobacterium (c) nodulation of Sesbania stems by nitrogen fixing bacteria (d) plant growth stimulation by phosphate- solubilising bacteria.

Description : The most thoroughly studied of the known bacteria- plant interactions is the (a) cyanobacterial symbiosis with some aquatic ferns (b) gall formation on certain angiosperms by Agrobacterium (c) ... stems by nitrogen fixing bacteria (d) plant growth stimulation by phosphate- solubilising bacteria.

Last Answer : (b) gall formation on certain angiosperms by Agrobacterium

Which one of the following statements is correct? (a) Legumes fix nitrogen only through the specialized bacteria that live in their roots. (b) Legumes fix nitrogen independently of the specialized bacteria that live in their roots. (c) Legumes fix nitrogen only through specialized bacteria that live in their leaves. (d) Legumes are incapable of fixing nitrogen.

Description : Which one of the following statements is correct? (a) Legumes fix nitrogen only through the specialized bacteria that live in their roots. (b) Legumes fix nitrogen independently of the specialized ... specialized bacteria that live in their leaves. (d) Legumes are incapable of fixing nitrogen.

Last Answer : (a) Legumes fix nitrogen only through the specialized bacteria that live in their roots.

A prokaryotic autotrophic nitrogen fixing symbiont is found in (a) Alnus (b) Cycas (c) Cicer (d) Pisum.

Description : A prokaryotic autotrophic nitrogen fixing symbiont is found in (a) Alnus (b) Cycas (c) Cicer (d) Pisum.

Last Answer : (b) Cycas