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
Description : Two bacteria found to be very useful in genetic engineering experiments are (a) Nitrobacter and Azotobacter (b) Rhizobium and Diplococcus (c) Nitrosomonas and Klebsiella (d) Escherichia and Agrobacterium.
Last Answer : (d) Escherichia and Agrobacterium.
Description : Symbiotic nitrogen fixing bacteria is — a. Azotobacter b. Azospirillum c. Rhizobium d. None of these
Last Answer : c. Rhizobium
Description : The essential element required by the N fixing bacterium Rhizobium
Last Answer : Ans. Mo
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 : One of the free-living, anaerobic nitrogen-fixeris (a) Beijerinckia (b) Rhodospirillum (c) Rhizobium (d) Azotobacter.
Last Answer : b) Rhodospirillum
Description : 19.Which of the following is a free living nitrogen fixing bacterium present in the soil (a)Nitrosomonas (b)Rhizobium (c)Azotobacter (d)Pseudomonas
Last Answer : ANS.(C) Azotobacter
Description : Which of the following is non-symbiotic biofertilizer? (a) Anabaena (b) Rhizobium (c) VAM (d) Azotobacter
Description : ___ is the example of associative, nonsymbiotic nitrogen fixing organism. (A) Rhizobium (B) Azorhizobium (C) Pseudomonas ‘ (D) Azospirillum
Last Answer : (C) Pseudomonas ‘
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 : The Ti plasmid, is often used for making transgenic plants. The plasmid is found in (a) Azotobacter (b) Rhizobium of the roots of leguminous plants (c) Agrobacterium (d) Yeast as a 2 mm plasmid.
Last Answer : (c) Agrobacterium
Description : An organism used as a biofertilizer for raising soybean crop is (a) Azotobacter (b) Azospirillum (c) Rhizobium (d) Nostoc.
Last Answer : (c) Rhizobium
Description : The nitrogen fixing bacterium found on root surface of rice
Last Answer : Ans.Azospirillum
Description : Azotobacter fixes atmospheric nitrogen in the soil by— (A) Symbiotically (B) Non-symbiotically (C) Both (A) and (B) (D) None of these
Last Answer : (A) Symbiotically
Description : Rhizobium is a kind of – (1) Photosynthetic bacteria (2) Symbiotic bacteria (3) Parasitic bacteria (4) Saprophytic bacteria
Last Answer : (2) Symbiotic bacteria Explanation: Rhizobia are soil bacteria that fix nitrogen after becoming established inside root nodules of legumes. They are the only nitrogenfixing bacteria living in a symbiotic relationship with legumes. Common crop and forage legumes are peas, beans, clover, and soy.
Description : Rhizobium is a kind of (1) Photosynthetic bacteria (2) Symbiotic bacteria (3) Parasitic bacteria (4) Saprophytic bacteria
Last Answer : Symbiotic bacteria
Description : 3. Which bacterium is used in the production of insulin by genetic engineering? a. Saccharomyces b. Rhizobium c. Escherichia d. Mycobacterium
Last Answer : Ans: Escherichia
Description : Which is the free living soil bacteria in fixes nitrogen? Anatomy: Azotobacter.
Last Answer : Who in 1939 suggested the name meson for middle-weight particles?
Description : Azotobacter and Beijerinckia are the examples of (a) Symbiotic nitrogen-fixers (b) Non-symbiotic nitrogen-fixers (c) Ammonifying bacteria (d) Disease causing bacteria
Last Answer : Ans. ((b))
Description : Clostridium tetani grows in a/an _____ environment. a. Acidic b. Anaerobic c. High Oxygen d. Aerobic
Last Answer : b. Borrelia
Description : Rhizobium fixes atmospheric nitrogen/ha to the soil
Last Answer : Ans. 50-100 kg
Description : Rhizobium fixes nitrogens in the roots of _____, so they don't need to be fertilized; in fact they add nitrogen to the soil. a. corn b. legumes c. wheat d. grasses e. oats
Last Answer : b. legumes
Description : Select the correct statement from the following. (a) Biogas is produced by the activity of aerobic bacteria on animal waste. (b) Methanobacterium is an aerobic bacterium found in rumen of ... sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.
Last Answer : (d) Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.
Description : “Azotobacter” bacteria is known for biological fixation of which atmospheric gas? a. A Oxygen b. B Nitrogen c. C Carbon Dioxide d. D Helium
Last Answer : b. B Nitrogen
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.
Description : Free-living nitrogen fixing microorganisms are (1) Rhizobia (2) Soil fungi (3) Vesicular arbuscular mycorrhiza (4) Blue green algae
Last Answer : Rhizobia
Description : Name some non-symbiotic nitrogen fixing prokaryote. -Biology
Last Answer : answer:
Description : Non leguminous nitrogen fixing trees
Last Answer : Ans. Alnus nepalensis
Description : The common nitrogen-fixer in paddy fields is (a) Rhizobium (b) Azospirillum (c) Oscillatoria (d) Frankia.
Last Answer : (b) Azospirillum
Description : Select the mismatch. (a) Rhodospirillum – Mycorrhiza (b) Anabaena – Nitrogen fixer (c) Rhizobium – Alfalfa (d) Frankia – Alnus
Last Answer : (a) Rhodospirillum – Mycorrhiza
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.
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 : Select the mismatch : (1) Rhodospirillum - Mycorrhiza (2) Anabaena - Nitrogen fixer (3) Rhizobium - Alfalfa (4) Frankia - Alnus
Last Answer : (1) Rhodospirillum - Mycorrhiza
Description : Nitrogen fixation in root nodules of Alnus is brought about by (a) Frankia (b) Azorhizobium (c) Bradyrhizobium (d) Clostridium
Last Answer : (a) Frankia
Description : Azotobacter and Bacillus polymyxa are the examples of (a) pathogenic bacteria (b) decomposers (c) symbiotic N2 fixer (d) non-symbiotic N2 fixer.
Last Answer : (d) non-symbiotic N2 fixer
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 : What is Klebsiella pneumoniae?
Last Answer : Klebsiella pneumonia is a type of bacterial pneumonia caused by infection with the Klebsiella pneumoniae bacterium, a gram-negative bacteria which is typically carried in fecal material and ingested through ... existing medical problem or infection, and it can be very dangerous for some patients.
Description : Is Klebsiella pneumonia fatal?
Last Answer : Yes it is... Rapidly fatal
Description : Piperacillin differs from carbenicillin in the following respect(s) (a) It is more active against pseudomonas aeruginosa (b) It is active against Klebsiella also (c) It is acid resistant (d) Both (a) and (b)
Last Answer : Ans: D
Description : Acid-fast staining is typicaly used to stain which bacterial genus? a. Haemophilus b. Streptococcus c. Klebsiella d. Mycobacterium
Last Answer : d. Mycobacterium
Description : Piperacillin differs from carbenicillin in the following respect(s): A. It is more active against Pseudomonas aeruginosa B. It is active against Klebsiella as well C. It is acid resistant D. Both ‘A’ and ‘B’ are correct
Last Answer : D. Both ‘A’ and ‘B’ are correct
Description : Under anaerobic conditions, bacterium Pseudomonas changes (a) Nitrate to molecular nitrogen (b) Nitrate to ammonia (c) Nitrate to nitrite (d) Nitrite to nitrate
Last Answer : Ans. ((a))
Description : Which bacterium is used for nitrogen fixation in sugarcane field?
Last Answer : Ans.Acetobactor diazotrophicus
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.
Description : Nitrogen fixing bacteria is useful in growing which crop? -Do You Know?
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.
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)