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 : 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 : Lichens are well known combination of an alga and a fungus where fungus has (a) a saprophytic relationship with the alga (b) an epiphytic relationship with the alga (c) a parasitic relationship with alga (d) a symbiotic relationship with alga.
Last Answer : (d) a symbiotic relationship with alga.
Description : The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. (A) Anaerobic (B) Saprophytic (C) Aerobic (D) Parasitic
Last Answer : (C) Aerobic
Description : Which of the following is/are examples for symbiotic association? (1) Algae - lichen (2) Plant roots - rhizobium bacteria (3) Both are right (4) Both are wrong
Last Answer : (3) Both are right
Description : Symbiotic nitrogen fixing bacteria is — a. Azotobacter b. Azospirillum c. Rhizobium d. None of these
Last Answer : c. Rhizobium
Description : Define (i) saprophytic nutrition (ii) parasitic nutrition, and (iii) holozoic nutrition. Give one example of each type. -Science
Last Answer : Saprophytic nutrition: It is that nutrition in which an organism obtains its food from dead organic matter of dead plants, dead animals and rotten bread. Example: Fungi and many bacteria obtain ... absorbed into the body cells of the organism.Example: Human beings obtain food by holozoic nutrition
Description : Name one organism each having saprophytic, parasitic and holozoic modes of nutrition. -Science
Last Answer : Saprophytic – Fungi.Parasitic – Plasmodium.Holozoic – Human Beings.
Description : Fungi are always (a) Autotrophic (b) Heterotrophic (c) Parasitic (d) Saprophytic
Last Answer : Ans:(b)
Description : Which of the following is non-symbiotic biofertilizer? (a) Anabaena (b) Rhizobium (c) VAM (d) Azotobacter
Last Answer : (d) Azotobacter
Description : A non-photosynthetic aerobic nitrogen fixing soil bacterium is (a) Rhizobium (b) Clostridium (c) Azotobacter (d) Klebsiella.
Last Answer : (c) Azotobacter
Description : Which of the following is free-living aerobic non- photosynthetic nitrogen-fixing bacterium? (a) Nostoc (b) Azospirillum (c) Rhizobium (d) Azotobacter
Description : Mycorrhiza is correctly described as (a) parasitic association between roots and some fungi (b) symbiotic relationship between fungi and roots of some higher plants (c) symbiosis of algae and fungi (d) relation of ants with the stem of some trees.
Last Answer : (b) symbiotic relationship between fungi and roots of some higher plants
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 : 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 : 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 : Symbiotic N2 fixing bacteria in leguminous crop.
Last Answer : Ans. Rhizobium
Description : Lichen is considered to be a symbiotic association of two living organisms. Which organisms are involved in it? (a) Algae and bacteria (b) Algae and fungi (c) Algae and bryophytes (d) Fungi and bryophytes
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 : Symbiotic N2 - fixation is carried out by which bacteria?
Last Answer : Rhizobium leguminosarum
Description : Non - symbiotic N2 - fixation is carried out by bacteria such as.......... and.......... ?
Last Answer : Azotobacter & Clostridium
Description : Name the organisms which do not derive energy directly or indirectly from sun. (a) Chemosynthetic bacteria (b) Pathogenic bacteria (c) Symbiotic bacteria (d) Mould
Last Answer : (a) Chemosynthetic bacteria
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 : Symbiotic Bacteria responsible for the fixation of atmospheric nitrogen are present in (1) peas (2) wheat (3) corn (4) oats
Last Answer : peas
Description : Is gas vacuole found in blue green photosynthetic bacteria a type of inclusion body ? -Biology
Last Answer : answer:
Description : The first photosynthetic oxygen liberating organisms to appear on earth were (1) Cyanobacteria (2) Bryophytes (3) Green algae (4) Bacteria
Last Answer : (1) Cyanobacteria Explanation: Cyanobacteria or blue green algae were the photosynthetic organisms that lived in the ancient ocean. It liberated the oxygen found in the iron oxide.
Description : Photosynthetic bacteria have pigments in (a) chromoplasts (b) chromatophores (c) leucoplasts (d) chloroplasts.
Last Answer : (b) chromatophores
Description : The photosynthetic pigments used by the green sulfur bacteria and some archaeal species are a. Chlorophyll b. Bacteriochlorophyll c. Cytochrome d. Sulfate
Last Answer : b. Bacteriochlorophyll
Description : Which of the following theory is supported by the genomic sequence of the obligate intracellularparasite Rickettsia prowazekii ? A- Parasitic bacteria have very large genomes B- Parasites have a ... viruses C- Mitochondria have evolved from endosymbiotic bacteria D- All bacteria evolved from viruses
Last Answer : Mitochondria have evolved from endosymbiotic bacteria
Description : $ Slime mouls are mainly saprophytic. ! Saprophytes get their nutrition from a host.
Last Answer : $ Slime mouls are mainly saprophytic. ! Saprophytes get their nutrition from a host. A. If both As and R ... is wrong D. If both As and R are wrong.
Description : $ Euglena has mixotrophic nutrition. ! Mixtrophic nutrition means that nutrition is autotropic in the presence of light and saprophytic in the absence
Last Answer : $ Euglena has mixotrophic nutrition. ! Mixtrophic nutrition means that nutrition is autotropic in the presence of ... D. If both As and R are wrong.
Description : Which of the following are likely to be present in deep sea water? (a) Blue-green algae (b) Saprophytic fungi (c) Archaebacteria (d) Eubacteria
Last Answer : c) Archaebacteria
Description : Saprophytic fungi A- engulf their food in order to break it down B- secure their food from dead organic materials C- both (a) and (b) D- none of the above
Last Answer : secure their food from dead organic materials
Description : An animal which consumes plant and animal matter i called: a) a carnivore b) a saprophytic (pron: sap-roe-fit-ick) c) an omnivore d) an herbivore
Last Answer : ANSWER: C -- AN OMNIVORE
Description : How does Rhizobium serve as a biofertilizer? -Biology
Last Answer : Rhizobium belongs to the state of Monra.
Description : Rhizobium trifoli is applied for
Last Answer : Ans. Berseem
Description : Rhizobium leguminosarum is applied for
Last Answer : Ans. Pea, Lathyrus and Lentil
Description : Rhizobium japonicum culture is applied for crops
Last Answer : Ans. Soybean and Groundnut
Description : The essential element required by the N fixing bacterium Rhizobium
Last Answer : Ans. Mo
Description : Rhizobium fixes atmospheric nitrogen/ha to the soil
Last Answer : Ans. 50-100 kg
Description : Which of the following is also used as a Bio fertilizer? (1) Rhizobium (2) Azotobactar (3) Azospirillum (4) All of the above
Last Answer : (4) All of the above Explanation: Rhizobium, Azotobacter, Azospirillum and blue green algae are traditionally used as Bio fertilizers.
Description : Human insulin is being commercially produced from a transgenic species of (a) Rhizobium (b) Saccharomyces (c) Escherichia (d) Mycobacterium
Last Answer : (c) Escherichia
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 : 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
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
Description : Which one of the following pairs is not correctly matched? (a) Streptomyces - Antibiotic (b) Serratia - Drug addiction (c) Spirulina - Single cell protein (d) Rhizobium - Biofertilizer
Last Answer : b) Serratia - Drug addiction
Description : An example of endomycorrhiza is (a) Nostoc (b) Glomus (c) Agaricus (d) Rhizobium.
Last Answer : (b) Glomus
Description : The common nitrogen-fixer in paddy fields is (a) Rhizobium (b) Azospirillum (c) Oscillatoria (d) Frankia.
Last Answer : (b) Azospirillum