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.

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.
by

1 Answer

Answer :

(b) gall formation on certain angiosperms by
Agrobacterium
by

Related questions

Sporocarp is a reproductive structure of (a) Some algae (b) Some aquatic ferns (c) Angiosperms having spores (d) Bryophytes

Description : Sporocarp is a reproductive structure of (a) Some algae (b) Some aquatic ferns (c) Angiosperms having spores (d) Bryophytes

Last Answer : Ans. ((b))

$ 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.

Which of the following bacterium causes crown gall disease in plants? (1) Bacillus thurigiensis (2) Agrobacterium tumefaciens (3) Pseudomonas fluorescens (4) None of these

Description : Which of the following bacterium causes crown gall disease in plants? (1) Bacillus thurigiensis (2) Agrobacterium tumefaciens (3) Pseudomonas fluorescens (4) None of these

Last Answer : (2) Agrobacterium tumefaciens Explanation: Crown gall is a disease caused by the bacterium Agrobacterium tumefaciens (synonym Rhizobium radiobacter), which enters the plant through wounds in roots or ... producing swollen galls. As the disease progresses, plants lose vigour and may eventually die.

Two microbes found to be very useful in genetic engineering are (a) crown gall bacterium and Caenorhabditis elegans (b) Escherichia coli and Agrobacterium tumefaciens (c) Vibrio cholerae and a tailed bacteriophage (d) Diplococcus sp. and Pseudomonas sp

Description : Two microbes found to be very useful in genetic engineering are (a) crown gall bacterium and Caenorhabditis elegans (b) Escherichia coli and Agrobacterium tumefaciens (c) Vibrio cholerae and a tailed bacteriophage (d) Diplococcus sp. and Pseudomonas sp

Last Answer : (b) Escherichia coli and Agrobacterium tumefaciens

Which of the following bacterium causes crown gall disease in plants? (1) Bacillus thurigiensis (2) Agrobacterium tumefaciens (3) Pseudomonas fluorescens (4) None of these

Description : Which of the following bacterium causes crown gall disease in plants? (1) Bacillus thurigiensis (2) Agrobacterium tumefaciens (3) Pseudomonas fluorescens (4) None of these

Last Answer : Agrobacterium tumefaciens

Application of Phosphorus and Sulphur increase a Better nodulation b Better growth c Better yield d All

Description : Application of Phosphorus and Sulphur increase a Better nodulation b Better growth c Better yield d All

Last Answer : d All

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. .

Which nitrogen fixing bacteria is found in leguminuous plant?

Description : Which nitrogen fixing bacteria is found in leguminuous plant?

Last Answer : Rizobium

1. Which nitrogen fixing bacteria is found in leguminuous plant? 2. A person to be qualified for standing in a panchayat election what age must have he attained? 3. Mirage is observed in a desert due to the phenomenon of which reflection? 4. What is the best representative of the acid igneous rocks? 5. During which Sikh Guru Arjun Dev was killed?

Description : 1. Which nitrogen fixing bacteria is found in leguminuous plant? 2. A person to be qualified for standing in a panchayat election what age must have he attained? 3. Mirage is observed in ... coal reserves of India are found in which state? 20. Which Sultan provided employment to unemployeds?

Last Answer : Answer : 1. Rizobium 2. 21 years 3. Total reflection 4. Granite 5. Jahangir 6. Karnataka 7. Foreign Institutional Investors 8. Mycorrhizae 9. Barren Island 10. Aurobindo Ghosh 11. M. Hidayatullah 12. ... 16. New Delhi 17. Muscles ear lobe 18. Neelam Sanjiva Reddy 19. Jharkhand 20. Firoz shah Tughlaq

Stimulation of the cholinergic pathway results in: a. ciliary muscle contraction b. a decrease in atrial contractilityc. gall bladder contraction d. all above

Description : Stimulation of the cholinergic pathway results in: a. ciliary muscle contraction b. a decrease in atrial contractility c. gall bladder contraction d. all above

Last Answer : all above

________________ causes pharmacodynamic drug interaction. a) Gastric motility changes. b) Stimulation of metabolism. c) Alteration of pH of GIT. d)Interactions at receptor site.

Description : ________________ causes pharmacodynamic drug interaction. a) Gastric motility changes. b) Stimulation of metabolism. c) Alteration of pH of GIT. d)Interactions at receptor site.

Last Answer : d)Interactions at receptor site. 

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:

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)

Nitrogen fixing bacteria is useful in growing which crop?

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

Last Answer : Legume

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.  

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.

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

In the five kingdom system of classification, which single kingdom out of the following can include blue-green algae, nitrogen fixing bacteria and methanogenic archaebacteria? (a) Plantae (b) Protista (c) Monera (d) Fungi

Description : In the five kingdom system of classification, which single kingdom out of the following can include blue-green algae, nitrogen fixing bacteria and methanogenic archaebacteria? (a) Plantae (b) Protista (c) Monera (d) Fungi

Last Answer : (c) Monera

Symbiotic nitrogen fixing bacteria is — a. Azotobacter b. Azospirillum c. Rhizobium d. None of these

Description : Symbiotic nitrogen fixing bacteria is — a. Azotobacter b. Azospirillum c. Rhizobium d. None of these

Last Answer : c. Rhizobium

Which root contain nitrogen fixing bacteria?

Description : Which root contain nitrogen fixing bacteria?

Last Answer : Nodulated root

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

What is the use of biochar in farming? 1. Biochar can be used as a part of the growing medium in vertical farming. 2. When biochar is a part of the growing medium, it promotes the growth of nitrogen fixing microorganisms. 3. When biochar is a part of the growing medium, it enables the growing medium to retain water for longer time. Which of the statements given above is/ are correct? a) 1 and 2 only b) 2 only c) 1 and 3 only d) 1, 2 and 3

Description : What is the use of biochar in farming? 1. Biochar can be used as a part of the growing medium in vertical farming. 2. When biochar is a part of the growing medium, it promotes the growth of nitrogen fixing microorganisms. 3. ... are correct? a) 1 and 2 only b) 2 only c) 1 and 3 only d) 1, 2 and 3

Last Answer : d) 1, 2 and 3

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.

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.

Which one of the following bacteria has found extensive use in genetic engineering work in plants? (a) Clostridium septicum (b) Xanthomonas citri (c) Bacillus coagulens (d) Agrobacterium tumefaciens

Description : Which one of the following bacteria has found extensive use in genetic engineering work in plants? (a) Clostridium septicum (b) Xanthomonas citri (c) Bacillus coagulens (d) Agrobacterium tumefaciens

Last Answer : (d) Agrobacterium tumefaciens

The bacteria generally used for genetic engineering is (a) Agrobacterium (b) Bacillus (c) Pseudomonas (d) Clostridium.

Description : The bacteria generally used for genetic engineering is (a) Agrobacterium (b) Bacillus (c) Pseudomonas (d) Clostridium.

Last Answer : (a) Agrobacterium

$ Cyanobacterial cells are eukaryotic ! Prokaryotic cells are diploid.

Description : $ Cyanobacterial cells are eukaryotic ! Prokaryotic cells are diploid.

Last Answer : $ Cyanobacterial cells are eukaryotic ! Prokaryotic cells are diploid. A. If both As and R are correct and R ... wrong D. If both As and R are wrong.

Read the following four statements (A – D). (A) Both photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane. (B) In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth. (C) Stamens in flowers of Gloriosa and Petunia are polyandrous.(D) Symbiotic nitrogen fixers occur in free-living state also in soil.

Description : Read the following four statements (A - D). (A) Both photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane. (B) In dicot stems, a new cambium ... Petunia are polyandrous. (D) Symbiotic nitrogen fixers occur in free-living state also in soil.

Last Answer : (A) Both photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane.

The green manure crop having both stem and root nodulation

Description : The green manure crop having both stem and root nodulation

Last Answer : Ans. Sesbania rostrata

In ferns, meiosis takes place at the time of (a) spore formation (b) spore germination (c) gamete formation (d) antheridia and archegonia formation.

Description : In ferns, meiosis takes place at the time of (a) spore formation (b) spore germination (c) gamete formation (d) antheridia and archegonia formation.

Last Answer : (a) spore formation

How can I be certain my chicken is thoroughly cooked?

Description : How can I be certain my chicken is thoroughly cooked?

Last Answer : Everyone says to judge it with your eye. But it's really your nose you should pay attention to, the smell is unmistakable.

In plant studies, many species of angiosperms lack secondary growth and therefore do not become woody. They are generally called by which of the following? a) trees b) bines c) herbs d) none of the above

Description : In plant studies, many species of angiosperms lack secondary growth and therefore do not become woody. They are generally called by which of the following? a) trees b) bines c) herbs d) none of the above

Last Answer : ANSWER: C -- HERBS

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

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

Phosphatic fertilisers (A) Are useful during early stage of the plant growth (B) Accelerate fruit formation in later stages of growth (C) Lessen the effect of excessive nitrogen application (D) None of these

Description : Phosphatic fertilisers (A) Are useful during early stage of the plant growth (B) Accelerate fruit formation in later stages of growth (C) Lessen the effect of excessive nitrogen application (D) None of these

Last Answer : (B) Accelerate fruit formation in later stages of growth

Which nutrient in fertiliser makes the plant stems stronger and increases branching? (A) Nitrogen (B) Phosphorous (C) Potassium (D) Calcium

Description : Which nutrient in fertiliser makes the plant stems stronger and increases branching? (A) Nitrogen (B) Phosphorous (C) Potassium (D) Calcium

Last Answer : (B) Phosphorous

The introduction of T-DNA into plants involves (a) exposing the plants to cold for a brief period (b) allowing the plant roots to stand in water (c) infection of the plant by Agrobacterium tumefaciens (d) altering the pH of the soil, then heat-shocking the plants.

Description : The introduction of T-DNA into plants involves (a) exposing the plants to cold for a brief period (b) allowing the plant roots to stand in water (c) infection of the plant by Agrobacterium tumefaciens (d) altering the pH of the soil, then heat-shocking the plants.

Last Answer : (c) infection of the plant by Agrobacterium tumefaciens

Should I trim off all the dead leaves and stems or wait until the plant starts to recover by sending out new growth?

Description : Should I trim off all the dead leaves and stems or wait until the plant starts to recover by sending out new growth?

Last Answer : I have them in morning sun & afternoon shade..................

ch of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth? (A) Nitrogenous fertiliser (B) Potassic fertiliser (C) Phosphatic fertiliser (D) None of these

Description : ch of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth? (A) Nitrogenous fertiliser (B) Potassic fertiliser (C) Phosphatic fertiliser (D) None of these

Last Answer : (A) Nitrogenous fertilise

Potassic fertilisers do not promote the development of (A) Stems & leaves during early stage of plant growth (B) Starches of potatoes & grains (C) Sugar of fruits & vegetables (D) Fibrous materials of plants

Description : Potassic fertilisers do not promote the development of (A) Stems & leaves during early stage of plant growth (B) Starches of potatoes & grains (C) Sugar of fruits & vegetables (D) Fibrous materials of plants

Last Answer : (A) Stems & leaves during early stage of plant growth

Small cut pieces of soft stems are placed in growth medium with following plant hormones. Which combination of plant hormones will show slowest growth ? (1) Auxin + Cytokinin (2) Gibberellins + Auxin (3) Gibberellins + Cytokinin (4) Abscisic Acid + Auxin

Description : Small cut pieces of soft stems are placed in growth medium with following plant hormones. Which combination of plant hormones will show slowest growth ? (1) Auxin + Cytokinin (2) Gibberellins + Auxin (3) Gibberellins + Cytokinin (4) Abscisic Acid + Auxin

Last Answer : (4) Abscisic Acid + Auxin

Hormonal stimulation of the formation of the second messenger inositol 1,4,5 triphosphate (IP3) quickly leads to the release of which other intracellular messenger? (A) cAMP (B) Prostaglandin (C) Calcinon (D) Leukotriene

Description : Hormonal stimulation of the formation of the second messenger inositol 1,4,5 triphosphate (IP3) quickly leads to the release of which other intracellular messenger? (A) cAMP (B) Prostaglandin (C) Calcinon (D) Leukotriene

Last Answer : Answer : C

Which one of the following is NOT a function of complement? a. Stimulation of inflammation b. Stimulation of antibody formation c. Formation of membrane attack complexes d. Heightened level of phagocytosis

Description : Which one of the following is NOT a function of complement? a. Stimulation of inflammation b. Stimulation of antibody formation c. Formation of membrane attack complexes d. Heightened level of phagocytosis

Last Answer : b. Stimulation of antibody formation

$ Angiosperms produce seeds, but do not produce fruits. ! Fruit and seed formation occurs in Gymnosperms.

Description : $ Angiosperms produce seeds, but do not produce fruits. ! Fruit and seed formation occurs in Gymnosperms.

Last Answer : $ Angiosperms produce seeds, but do not produce fruits. ! Fruit and seed formation occurs in Gymnosperms. A. ... wrong D. If both As and R are wrong.

what kind of sun does a sesbania need in east texas?

Description : what kind of sun does a sesbania need in east texas?

Last Answer : Need Answer

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

____ is the example of stem nodulating legume. (A) Sesbania rostrata (B) Crotolaria juncea (C) Phaseolus trilobus (D) Cicer arietinum

Description : ____ is the example of stem nodulating legume. (A) Sesbania rostrata (B) Crotolaria juncea (C) Phaseolus trilobus (D) Cicer arietinum

Last Answer : (A) Sesbania rostrata

is the floral formula of (a) Petunia (b) Brassica (c) Allium (d) Sesbania.

Description : is the floral formula of (a) Petunia (b) Brassica (c) Allium (d) Sesbania.

Last Answer : (a) Petunia

Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicum, sweet pea, Petunia, Indigofera, mustard, soybean, tobacco and groundnut, how many plants have corolla with valvate aestivation? (a) Six (b) Seven (c) Eight (d) Five

Description : Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicum, sweet pea, Petunia, Indigofera, mustard, soybean, tobacco and groundnut, how many plants have corolla with valvate aestivation? (a) Six (b) Seven (c) Eight (d) Five

Last Answer : (b) Seven

How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers? (a) Three (b) Four (c) Five (d) Six

Description : How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers? (a) Three (b) Four (c) Five (d) Six

Last Answer : (b) Four

Cymose inflorescence is present in (a) Solanum (b) Sesbania (c) Trifolium (d) Brassica.

Description : Cymose inflorescence is present in (a) Solanum (b) Sesbania (c) Trifolium (d) Brassica.

Last Answer : (a) Solanum