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
Description : Select the mismatch. (a) Rhodospirillum – Mycorrhiza (b) Anabaena – Nitrogen fixer (c) Rhizobium – Alfalfa (d) Frankia – Alnus
Last Answer : (a) Rhodospirillum – Mycorrhiza
Description : Select the mismatch : (1) Rhodospirillum - Mycorrhiza (2) Anabaena - Nitrogen fixer (3) Rhizobium - Alfalfa (4) Frankia - Alnus
Last Answer : (1) Rhodospirillum - Mycorrhiza
Description : Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) ... fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification
Last Answer : (d) Anaerobic ammonium oxidation and denitrification
Description : Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation ... the conversion of atmospheric N2 to NH3. (d) Nitrogenase is insensitive to oxygen.
Last Answer : (d) Nitrogenase is insensitive to oxygen.
Description : ___ is the example of associative, nonsymbiotic nitrogen fixing organism. (A) Rhizobium (B) Azorhizobium (C) Pseudomonas ‘ (D) Azospirillum
Last Answer : (C) Pseudomonas ‘
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)
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. .
Description : A prokaryotic autotrophic nitrogen fixing symbiont is found in (a) Alnus (b) Cycas (c) Cicer (d) Pisum.
Last Answer : (b) Cycas
Description : The common nitrogen-fixer in paddy fields is (a) Rhizobium (b) Azospirillum (c) Oscillatoria (d) Frankia.
Last Answer : (b) Azospirillum
Description : A nitrogen-fixing microbe associated with Azolla in rice fields is (a) Spirulina (b) Anabaena (c) Frankia (d) Tolypothrix.
Last Answer : (b) Anabaena
Description : A nitrogen-fixing microbe associated with Azolla in rice fields is (1) Tolypothrix (2) Spirulina (3) Anabaena (4) Frankia
Last Answer : (3) Anabaena
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.
Description : ______ helps in fixation of nitrogen in rice field in association with root of Cycas plant. a) rhizobium b)fungus c)cyano bacteria d)bacteria
Last Answer : c)cyano bacteria
Description : ‘Coralloid root’ of Cycas helps in (1) Absorption of water (2) Absorption of water and fixation of Nitrogen (3) Anchorage (4) Transport of food
Last Answer : Absorption of water and fixation of Nitrogen
Description : Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism? (a) Crotalaria juncea (b) Cycas revoluta (c) Cicer arietinum (d) Casuarina equisetifolia
Last Answer : (d) Casuarina equisetifolia
Description : $ Leghaemoglobin is a compound of Iron and is present in the root nodules of leguminous plants. ! It acts as an oxygen scavenger and forms a temporary
Last Answer : $ Leghaemoglobin is a compound of Iron and is present in the root nodules of leguminous plants. ! It acts ... is wrong D. If both As and R are wrong.
Description : Study the given figure which shows the development of root nodules in soyabean. Match the correct explanation and find the correct sequence for labell
Last Answer : Study the given figure which shows the development of root nodules in soyabean. Match the ... Curling of root hair due to successful infection.
Description : Root nodules are commonly found in – (1) Parasitic plants (2) Epiphytic plants (3) Leguminous plants (4) Aquatic plants
Last Answer : (3) Leguminous plants
Description : The function of leghaemoglobin in the root nodules of legumes is (a) inhibition of nitrogenase activity (b) oxygen removal (c) nodule differentiation (d) expression of nif gene.
Last Answer : b) oxygen removal
Description : The product(s) of reaction catalysed by nitrogenase in root nodules of leguminous plants is/are (a) ammonia alone (b) nitrate alone (c) ammonia and oxygen (d) ammonia and hydrogen.
Last Answer : (d) ammonia and hydrogen.
Description : Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion
Last Answer : a) Formation of root nodules
Description : Root nodules are commonly found in : (1) Parasitic plants (2) Epiphytic plants (3) Leguminous plants (4) Aquatic plants
Last Answer : Leguminous plants
Description : A non-photosynthetic aerobic nitrogen fixing soil bacterium is (a) Rhizobium (b) Clostridium (c) Azotobacter (d) Klebsiella.
Last Answer : (c) Azotobacter
Description : Frankia form symbiotic association with
Last Answer : Frankia form symbiotic association with
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
Description : other than bacteria which factor leads to nitrogen fixation -General Knowledge
Last Answer : Other than bacteria, flood leads to nitrogen fixation.
Description : What is biological Nitrogen fixation? -Biology
Last Answer : answer:
Description : End product of biological nitrogen fixation? -Biology
Description : What is non-biological nitrogen fixation? -Biology
Description : What is symbiotic biological nitrogen fixation? -Biology
Description : Which enzyme is responsible for atmospheric nitrogen fixation? -Biology
Description : What is the function of Leghaemoglobin in nitrogen fixation? -Do You Know?
Description : By which algae is Nitrogen fixation done? -Do You Know?
Last Answer : blue-green algae
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.
Last Answer : Nitrogen fixation refers to the application of nitrogen from air to a special process.
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
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.
Description : Which one of the following bacteria has potential for nitrogen fixation
Last Answer : Which one of the following bacteria has potential for nitrogen fixation A. Nitrosomonas B. Nitrobacter C. Nitrosococcus D. Rhizobium
Description : difference between bacterial cell from function and nitrogen fixation
Last Answer : difference between bacterial cell from plant cell on nitrogen fixation
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.
Description : What The process of nitrogen fixation involved?
Last Answer : Changing it from a gas (N2) into a compound (often with O2
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)
Description : The enzyme involved in biological nitrogen fixation
Last Answer : Ans. Nitrogenase
Description : Which bacterium is used for nitrogen fixation in sugarcane field?
Last Answer : Ans.Acetobactor diazotrophicus
Description : The nitrogen fixation per hectare by soybean
Last Answer : Ans.40 kg
Description : Which one of the following mineral elements play an important role in biological nitrogen fixation a. Copper b. Magnesium c. Zinc d. Molybdenum
Last Answer : Ans: D
Description : The bacteria responsible for ‘nitrogen fixation’ is found in the roots of (a) grass (b) citrus plants (c) leguminous plants (d) neem tree
Last Answer : Ans:(c)
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.
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