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

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

1 Answer

Answer :

(a) Azolla
by

Related questions

Which aquatic fern is used to increase the yield in paddy crop? (a) Azolla (b) Salvinia (c) Marsilea (d) Isoetes

Description : Which aquatic fern is used to increase the yield in paddy crop? (a) Azolla (b) Salvinia (c) Marsilea (d) Isoetes

Last Answer : (a) Azolla

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.

Which of the following fern is an excellent biofertilizer? (a) Marsilea (b) Pteridium (c) Azolla (d) Salvinia

Description : Which of the following fern is an excellent biofertilizer? (a) Marsilea (b) Pteridium (c) Azolla (d) Salvinia

Last Answer : (c) Azolla

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

Which of the following is the pair of biofertilizers? (a) Azolla and BGA (b) Nostoc and legume (c) Rhizobium and grasses (d) Salmonella and E.coli

Description : Which of the following is the pair of biofertilizers? (a) Azolla and BGA (b) Nostoc and legume (c) Rhizobium and grasses (d) Salmonella and E.coli

Last Answer : (a) Azolla and BGA

Azolla pinnata is a). a fern b). an algae c). a gymnosperm d). an angiosperm

Description : Azolla pinnata is a). a fern b). an algae c). a gymnosperm d). an angiosperm

Last Answer : a). a fern

Aquatic weed act as alternate host and vectors of malaria, yellow and dengue fever is a). Water lettuce b). Salvinia c). Alligator weed d). All of these

Description : Aquatic weed act as alternate host and vectors of malaria, yellow and dengue fever is a). Water lettuce b). Salvinia c). Alligator weed d). All of these

Last Answer : d). All of these

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

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

Last Answer : (3) Anabaena

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 of the following is free-living aerobic non- photosynthetic nitrogen-fixing bacterium? (a) Nostoc (b) Azospirillum (c) Rhizobium (d) Azotobacter

Description : Which of the following is free-living aerobic non- photosynthetic nitrogen-fixing bacterium? (a) Nostoc (b) Azospirillum (c) Rhizobium (d) Azotobacter

Last Answer : (d) Azotobacter

Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen. (iii)Chemosynthetic autotrophic bacteria synthesize cellulose from glucose. (iv) Mycoplasma lack a cell wall and can survive without oxygenThe correct statements are (a) (ii) and (iii) (b) (i),(ii) and (iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv)..

Description : Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue-green alga which fixes ... iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv).

Last Answer : (d) (i), (ii) and (iv)

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 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

other than bacteria which factor leads to nitrogen fixation -General Knowledge

Description : other than bacteria which factor leads to nitrogen fixation -General Knowledge

Last Answer : Other than bacteria, flood leads to nitrogen fixation.

What is biological Nitrogen fixation? -Biology

Description : What is biological Nitrogen fixation? -Biology

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End product of biological nitrogen fixation? -Biology

Description : End product of biological nitrogen fixation? -Biology

Last Answer : answer:

What is non-biological nitrogen fixation? -Biology

Description : What is non-biological nitrogen fixation? -Biology

Last Answer : answer:

What is symbiotic biological nitrogen fixation? -Biology

Description : What is symbiotic biological nitrogen fixation? -Biology

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Which enzyme is responsible for atmospheric nitrogen fixation? -Biology

Description : Which enzyme is responsible for atmospheric nitrogen fixation? -Biology

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What is the function of Leghaemoglobin in nitrogen fixation? -Do You Know?

Description : What is the function of Leghaemoglobin in nitrogen fixation? -Do You Know?

Last Answer : answer:

By which algae is Nitrogen fixation done? -Do You Know?

Description : By which algae is Nitrogen fixation done? -Do You Know?

Last Answer : blue-green algae

What is Nitrogen Fixation ?

Description : What is Nitrogen Fixation ?

Last Answer : The largest source of nitrogen is the atmosphere. 6% (volumetric) nitrogen of the atmosphere. We cannot use nitrogen directly from the atmosphere. So for convenience of use, we do not usually convert ... . There are two methods of nitrogen fixation - 1. Natural methods and II. Synthetic method.

What is Nitrogen Fixation ?

Last Answer : Nitrogen fixation refers to the application of nitrogen from air to a special process.

Major nitrogen fixation is carried out by

Description : Major nitrogen fixation is carried out by

Last Answer : Major nitrogen fixation is carried out by A. Lightning B. Chemical industries C. symbiotic bacteria D. Leaching

How may ATP are required for formation ofone `NH_(3)` in biological nitrogen fixation.

Description : How may ATP are required for formation ofone `NH_(3)` in biological nitrogen fixation.

Last Answer : How may ATP are required for formation ofone `NH_(3)` in biological nitrogen fixation.

Which one of the following bacteria has potential for nitrogen fixation

Description : Which one of the following bacteria has potential for nitrogen fixation

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difference between bacterial cell from function and nitrogen fixation

Description : difference between bacterial cell from function and nitrogen fixation

Last Answer : difference between bacterial cell from plant cell on nitrogen fixation

How Nitrogen fixation for plants occurs in what organism?

Description : How Nitrogen fixation for plants occurs in what organism?

Last Answer : Nitrogen fixation is carried out by nitrogen fixing bacteria in the nodules of the roots of legumes, and in the soil.

What The process of nitrogen fixation involved?

Description : What The process of nitrogen fixation involved?

Last Answer : Changing it from a gas (N2) into a compound (often with O2

"Mulching" is the term used for the process of (a) Covering the roots of plants with loose material, dung, etc. in order to protect them from soil erosion etc. (b) Breaking down big pieces of soil into small ones (c) Transplanting of paddy seedlings (d) Nitrogen fixation of soil by use of fertilizers

Description : "Mulching" is the term used for the process of (a) Covering the roots of plants with loose material, dung, etc. in order to protect them from soil erosion etc. (b) Breaking down big pieces ... into small ones (c) Transplanting of paddy seedlings (d) Nitrogen fixation of soil by use of fertilizers

Last Answer : Ans: (a)

The enzyme involved in biological nitrogen fixation

Description : The enzyme involved in biological nitrogen fixation

Last Answer : Ans. Nitrogenase

Which bacterium is used for nitrogen fixation in sugarcane field?

Description : Which bacterium is used for nitrogen fixation in sugarcane field?

Last Answer : Ans.Acetobactor diazotrophicus

The nitrogen fixation per hectare by soybean

Description : The nitrogen fixation per hectare by soybean

Last Answer : Ans.40 kg

Which one of the following mineral elements play an important role in biological nitrogen fixation a. Copper b. Magnesium c. Zinc d. Molybdenum

Description : Which one of the following mineral elements play an important role in biological nitrogen fixation a. Copper b. Magnesium c. Zinc d. Molybdenum

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The bacteria responsible for ‘nitrogen fixation’ is found in the roots of (a) grass (b) citrus plants (c) leguminous plants (d) neem tree

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Voralloid root' of Gyms helps in (1) Absorption of water (2) Absorption of water and fixation of Nitrogen (3) Anchorage (4) Transport of food

Description : Voralloid root' of Gyms helps in (1) Absorption of water (2) Absorption of water and fixation of Nitrogen (3) Anchorage (4) Transport of food

Last Answer : (2) Absorption of water and fixation of Nitrogen Explanation: Branch roots are of two kinds: long-branching geotropic roots and shortbranching apogeotropic roots, which are referred to as coralloid ... algae), which fix nitrogen. It also collects water and soil nutrients and store carbohydrates.

Symbiotic Bacteria responsible for the fixation of atmospheric nitrogen are present in - (1) peas (2) wheat (3) corn (4) oats

Description : Symbiotic Bacteria responsible for the fixation of atmospheric nitrogen are present in - (1) peas (2) wheat (3) corn (4) oats

Last Answer : (1) peas Explanation: Nitrogen-fixing bacteria are microorganisms capable of transforming atmospheric nitrogen into fixed. nitrogen. Rhizobium is one such bacteria that is associated with leguminous plants ... and convert free nitrogen to ammonia, which the host plant utilizes for its development.

The source of oxygen in atmosphere is due to – (1) Photosynthesis (2) Excretion (3) Nitrogen fixation (4) Respiration

Description : The source of oxygen in atmosphere is due to – (1) Photosynthesis (2) Excretion (3) Nitrogen fixation (4) Respiration

Last Answer : (1) Photosynthesis Explanation: The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water. The organ-isms that carry out photosynthesis include ... well as the phytoplankton of the oceans. 6CO2 + 6H2O + energy -> C6H12O6 + 6O2

Nitrogen fixation is a process of - (1) Assimilation of nitrate (2) Utilisation of nitrogen gas (3) Conversion of organic nitrogen to proteins (4) Conversion of molecular nitrogen to ammonia

Description : Nitrogen fixation is a process of - (1) Assimilation of nitrate (2) Utilisation of nitrogen gas (3) Conversion of organic nitrogen to proteins (4) Conversion of molecular nitrogen to ammonia

Last Answer : (4) Conversion of molecular nitrogen to ammonia Explanation: Nitrogen fixation is a process by which nitrogen in the Earth's atmosphere is converted into ammonia (NH3) or other molecules available ... plants as nutrients. The conversion of organic nitrogen to proteins is achieved in Nitrogen cycle.

What is the function of Leghaemoglobin in nitrogen fixation?

Description : What is the function of Leghaemoglobin in nitrogen fixation?

Last Answer : Absorption of oxygen

Which is a free living bacteria that help in nitrogen fixation?

Description : Which is a free living bacteria that help in nitrogen fixation?

Last Answer : Azotohacter

By which algae is Nitrogen fixation done?

Description : By which algae is Nitrogen fixation done?

Last Answer : Blue-green algae

The term Nitrogen fixation denotes?

Description : The term Nitrogen fixation denotes?

Last Answer : Conversion of nitrogen into ammonia

The process of nitrogen fixation in organ- isms is controlled by which gene?

Description : The process of nitrogen fixation in organ- isms is controlled by which gene?

Last Answer : Nifgenes

What is Nitrogen Fixation?

Description : What is Nitrogen Fixation?

Last Answer : Nitrogen fixation is conversion of molecular nitrogen (N2) of atmosphere to soil nitrogen in the form of nitrites, increasing the fertility of soil. 

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

What is Azofication (a) It is also known as composite fixation of nitrogen. (b) It is also known as free fixation of nitrogen (c) It is also known as nitrogen fixed by Rhizobium bacteria ` (d) It is also known as nitrogen gain through rains or snow

Description : What is Azofication (a) It is also known as composite fixation of nitrogen. (b) It is also known as free fixation of nitrogen (c) It is also known as nitrogen fixed by Rhizobium bacteria ` (d) It is also known as nitrogen gain through rains or snow

Last Answer : (a) It is also known as composite fixation of nitrogen.

Enzyme first used for nitrogen fixation (a) nitrogenase (b) nitroreductase (c) transferase (d) transaminase.

Description : Enzyme first used for nitrogen fixation (a) nitrogenase (b) nitroreductase (c) transferase (d) transaminase.

Last Answer : (a) nitrogenase

If by radiation all nitrogenase enzyme are inactivated, then there will be no (a) fixation of nitrogen in legumes (b) fixation of atmospheric nitrogen (c) conversion from nitrate to nitrite in legumes (d) conversion from ammonium to nitrate in soil.

Description : If by radiation all nitrogenase enzyme are inactivated, then there will be no (a) fixation of nitrogen in legumes (b) fixation of atmospheric nitrogen (c) conversion from nitrate to nitrite in legumes (d) conversion from ammonium to nitrate in soil.

Last Answer : (a) fixation of nitrogen in legumes