Litmus is obtained from – (1) a bacterium (2) a fungus (3) an alga (4) lichen

Litmus is obtained from – (1) a bacterium (2) a fungus (3) an alga (4) lichen
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(4) lichen Explanation: Litmus is a water-soluble mixture of different dyes extracted from lichens, especially Roccellatinctoria. It is often absorbed onto filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic (i.e. alkaline) conditions, with the colour change occurring over the pH range 4.5-8.3 at 25 degree C. Neutral litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly
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Litmus is obtained from (1) a bacterium (2) a fungus (3) an alga (4) lichen

Description : Litmus is obtained from (1) a bacterium (2) a fungus (3) an alga (4) lichen

Last Answer : lichen

Relationship between an alga and the fungus in lichen? -Biology

Description : Relationship between an alga and the fungus in lichen? -Biology

Last Answer : answer:

There exists a close association between the alga and the fungus within a lichen. The fungus (a) provides protection, anchorage and absorption for the algae (b) provides food for the alga (c) fixes the atmospheric nitrogen for the alga (d) releases oxygen for the alga.

Description : There exists a close association between the alga and the fungus within a lichen. The fungus (a) provides protection, anchorage and absorption for the algae (b) provides food for the alga (c) fixes the atmospheric nitrogen for the alga (d) releases oxygen for the alga.

Last Answer : (a) provides protection, anchorage and absorption for the algae

The antibiotic penicillin is obtained from which of the following? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells

Description : The antibiotic penicillin is obtained from which of the following? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells

Last Answer : (3) fungus Explanation: Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.

The antibiotic penicillin is obtained from which of the following ? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells

Description : The antibiotic penicillin is obtained from which of the following ? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells

Last Answer : fungus

What is symbiotic relationship between fungus and alga?

Description : What is symbiotic relationship between fungus and alga?

Last Answer : Mutualism because they both benefit

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.

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.

How does the fungus in a lichen benefit? -Biology

Description : How does the fungus in a lichen benefit? -Biology

Last Answer : answer:

In a lichen what does algae provide for the fungus?

Description : In a lichen what does algae provide for the fungus?

Last Answer : Algae provide the lichen with food that the algae produces. Thelichen provides shelter, water and minerals for the algae.

Lichen is an association between which of the two? (1) Algae and fungus (2) Algae and tree (3) Fungus and tree (4) Bacteria and legume plant

Description : Lichen is an association between which of the two? (1) Algae and fungus (2) Algae and tree (3) Fungus and tree (4) Bacteria and legume plant

Last Answer : (1) Algae and fungus Explanation: A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.

Pencillin is extracted from – (1) yeast (2) algae (3) fungus (4) lichen

Description : Pencillin is extracted from – (1) yeast (2) algae (3) fungus (4) lichen

Last Answer : (3) fungus Explanation: Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.

Pencillin is extracted from - (1) yeast (2) algae (3) fungus (4) lichen

Description : Pencillin is extracted from - (1) yeast (2) algae (3) fungus (4) lichen

Last Answer : (3) fungus Explanation: Penicillin is produced from the genus of fungi "penicillia". All penicillin are dlactam antibiotics and are used in the treatment of bacterial infections caused by susceptible, usually Gram-positive, organisms

.Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group? (a) Paramecium and Plasmodium belong to the same kingdom as that of Penicillium. (b) Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan. (c) Yeast used in making bread and **** is a fungus. (d) Nostoc and Anabaena are examples of protista.

Description : .Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group? (a) Paramecium and Plasmodium belong to the same kingdom as that of Penicillium. (b) ... used in making bread and beer is a fungus. (d) Nostoc and Anabaena are examples of protista.

Last Answer : (c) Yeast used in making bread and beer is a fungus.

A _____ is a mutualistic association between a fungus and a photosynthetic organism like a cyanobacterium or algae. a. Morel b. Lichen c. Rust d. Smut

Description : A _____ is a mutualistic association between a fungus and a photosynthetic organism like a cyanobacterium or algae. a. Morel b. Lichen c. Rust d. Smut

Last Answer : b. Glomeromycota, sporangiospores

Which one single organisms or the pair of organisms is correctly assigned to its or their named taxonomic group ? (1) Nostoc and Anabaena are examples of protista (2) Paramecium and Plasmodium belong to the same kingdom as that of Penicillium (3) Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan (4) Yeast used in making bread and **** is a fungus

Description : Which one single organisms or the pair of organisms is correctly assigned to its or their named taxonomic group ? (1) Nostoc and Anabaena are examples of protista (2) Paramecium and Plasmodium belong to the ... of an algae and a protozoan (4) Yeast used in making bread and beer is a fungus

Last Answer : (4) Yeast used in making bread and beer is a fungus

Lichen is an association between which of the two ? (1) Algae and fungus (2) Algae and tree (3) Fungus and tree (4) Bacteria and legume plant

Description : Lichen is an association between which of the two ? (1) Algae and fungus (2) Algae and tree (3) Fungus and tree (4) Bacteria and legume plant

Last Answer : Algae and fungus

Pencillin is extracted from — (1) yeast (2) algae (3) fungus (4) lichen

Description : Pencillin is extracted from — (1) yeast (2) algae (3) fungus (4) lichen

Last Answer : fungus

Under the electron microscope, you observe a cell with three different types of large organelles, each bounded by two membranes. The cell is most likely (a) A plant (b) An animal (c) A fungus (d) A bacterium

Description : Under the electron microscope, you observe a cell with three different types of large organelles, each bounded by two membranes. The cell is most likely (a) A plant (b) An animal (c) A fungus (d) A bacterium

Last Answer : Ans:(a)

Polio is caused by - (1) Bacterium (2) Fungus (3) Virus (4) Insect

Description : Polio is caused by - (1) Bacterium (2) Fungus (3) Virus (4) Insect

Last Answer : (3) Virus Explanation: Poliomyelitis , often called polio or infantile paralysis, is an acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route.

What causes mumps? A. Fungus B. Bacterium C. Deficiency of vitamins D. Virus (Answer)

Description : What causes mumps? A. Fungus B. Bacterium C. Deficiency of vitamins D. Virus (Answer)

Last Answer : D. Virus (Answer)

The unequivocal proof of DNA as the genetic material came from the studies on a (a) bacterium (b) fungus (c) viroid (d) bacterial virus.

Description : The unequivocal proof of DNA as the genetic material came from the studies on a (a) bacterium (b) fungus (c) viroid (d) bacterial virus.

Last Answer : (c) viroid

The experimental proof for semi-conservative replication of DNA was first shown in a (a) fungus (b) bacterium (c) plant (d) virus

Description : The experimental proof for semi-conservative replication of DNA was first shown in a (a) fungus (b) bacterium (c) plant (d) virus

Last Answer : (b) bacterium

The experimental proof for semiconservative replication of DNA was first shown in a (1) Fungus (2) Bacterium (3) Plant (4) Virus

Description : The experimental proof for semiconservative replication of DNA was first shown in a (1) Fungus (2) Bacterium (3) Plant (4) Virus

Last Answer : (2) Bacterium

Polio is caused by (1) Bacterium (2) Fungus (3) Virus (4) Insect

Description : Polio is caused by (1) Bacterium (2) Fungus (3) Virus (4) Insect

Last Answer : Virus

Name the source from which litmus solution is obtained. -Science-7

Description : Name the source from which litmus solution is obtained. -Science-7

Last Answer : Litmus solution is obtained from Lichens

Litmus paper used in laboratary from which obtained?

Description : Litmus paper used in laboratary from which obtained?

Last Answer : Lichen

The antibiotic Ampicillin is - (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug

Description : The antibiotic Ampicillin is - (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug

Last Answer : (2) obtained from a bacterium Explanation: Ampicillin is an antibiotic made from bacteria. Belonging to the penicillin group of beta-lactam antibiotics, ampicillin is able to penetrate Gram-positive ... group. That amino group helps the drug penetrate the outer membrane of gram-negative bacteria.

The antibiotic Ampicillin is : (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug

Description : The antibiotic Ampicillin is : (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug

Last Answer : obtained from a bacterium

Blue-green alga that causes red blooms is: (a) Anabaena (b) Gleacapsa (c) Trichodesmium (d) Nostoc

Description : Blue-green alga that causes red blooms is: (a) Anabaena (b) Gleacapsa (c) Trichodesmium (d) Nostoc

Last Answer : Ans. ((c))

Every multicellular organism, be it a microscopic alga, a banyan tree or a human being, starts as a single cell called a/an (a) Egg (b) Sperm (c) Nucleus (d) Gene

Description : Every multicellular organism, be it a microscopic alga, a banyan tree or a human being, starts as a single cell called a/an (a) Egg (b) Sperm (c) Nucleus (d) Gene

Last Answer : Ans:(a)

Which of the following is an example of parasitic alga? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum

Description : Which of the following is an example of parasitic alga? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum

Last Answer : (2) Cephaleuros Explanation: Cephaleuros is a genus of parasitic thalloid algae comprising approximately 14 species. Its common name is red rust. The alga is parasitic on tea, coffee, mango and guava causing damage limited to the area of algal growth on leaves.

An alga which can be employed as food for human being is (a) Ulothrix (b) Chlorella (c) Spirogyra (d) Polysiphonia.

Description : An alga which can be employed as food for human being is (a) Ulothrix (b) Chlorella (c) Spirogyra (d) Polysiphonia.

Last Answer : (b) Chlorella

PGA as the first CO2 fixation product was discovered in photosynthesis of (a) bryophyte (b) gymnosperm (c) angiosperm (d) alga.

Description : PGA as the first CO2 fixation product was discovered in photosynthesis of (a) bryophyte (b) gymnosperm (c) angiosperm (d) alga.

Last Answer : (d) alga.

.Match items in column I with those in columnII. Column I Column II (A) Peritrichous flagellation (J) Ginkgo (B) Living fossil (K) Macrocystis (C) Rhizophore (L) Escherichia coli (D) Smallest flowering plant (M) Selaginella (E) Largest perennial alga (N) Wolffia Select the correct answer from the following. (a) A - L; B - J; C - M; D - N; E - K (b) A - K; B - J; C - L; D - M; E - N (c) A - N; B - L; C - K; D - M; E - J (d) A - J; B - K; C - N; D - L; E - M

Description : .Match items in column I with those in columnII. Column I Column II (A) Peritrichous flagellation (J) Ginkgo (B) Living fossil (K) Macrocystis (C) Rhizophore (L) Escherichia coli (D) Smallest flowering plant (M) Selaginella (E) Largest perennial ... - M; E - J (d) A - J; B - K; C - N; D - L; E - M

Last Answer : (a) A - L; B - J; C - M; D - N; E - K

An alga, very rich in protein, is (a) Chlorella (b) Nostoc (c) Spirogyra (d) Ulothrix.

Description : An alga, very rich in protein, is (a) Chlorella (b) Nostoc (c) Spirogyra (d) Ulothrix.

Last Answer : (a) Chlorella

Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages (b) membranous alga producing zoospores (c) filamentous alga with flagellated reproductive stages (d) non-motile colonial alga lacking zoospores.

Description : Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages (b) membranous alga producing zoospores (c) filamentous alga with flagellated reproductive stages (d) non-motile colonial alga lacking zoospores.

Last Answer : (c) filamentous alga with flagellated reproductive stages

An example of colonial alga is (a) Volvox (b) Ulothrix (c) Spirogyra (d) Chlorella

Description : An example of colonial alga is (a) Volvox (b) Ulothrix (c) Spirogyra (d) Chlorella

Last Answer : (a) Volvox

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)

An example of colonial alga is : (1) Volvox (2) Ulothrix (3) Spirogyra (4) Chlorella

Description : An example of colonial alga is : (1) Volvox (2) Ulothrix (3) Spirogyra (4) Chlorella

Last Answer : (1) Volvox

Which of the following is an example of parasitic alga ? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum

Description : Which of the following is an example of parasitic alga ? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum

Last Answer : Cephaleuros

What is meant by litmus test for mild acid ?

Description : What is meant by litmus test for mild acid ?

Last Answer : : Dipping blue litmus paper wet with mild acid turns it red. This is the litmus test for mild acid. Due to the high concentration of H + ions in dilute hydrochloric acid ( HCl) , dipping blue litmus paper in dilute HCl turns it red.

Which one makes litmus red ?

Description : Which one makes litmus red ?

Last Answer : HCI turns litmus red.

Which among the following is false about acids? (1) They give H+ ions in aqueous solution (2) Most acids contain hydrogen (3) They turn blue litmus red (4) They are bad conductor of electricity in aqueous solution

Description : Which among the following is false about acids? (1) They give H+ ions in aqueous solution (2) Most acids contain hydrogen (3) They turn blue litmus red (4) They are bad conductor of electricity in aqueous solution

Last Answer : (4) They are bad conductor of electricity in aqueous solution Explanation: Acids are good conductors of electric current in aqueous solution. When acids come in contact with water, they liberate OH ions, resulting in conduction of electricity.

One property of ammonia is – (1) It is insoluble in water (2) it is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Description : One property of ammonia is – (1) It is insoluble in water (2) it is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Last Answer : (4) Its aqueous solution turns red litmus blue Explanation: The main use of litmus is to test whether a solution is acidic or basic. For instance, ammonia gas, which is alkaline, colours the red litmus paper blue.

If a solution turns blue litmus red, its pH is likely to be : (1) 7 (2) 8 (3) 9 (4) 6

Description : If a solution turns blue litmus red, its pH is likely to be : (1) 7 (2) 8 (3) 9 (4) 6

Last Answer : (4) 6 Explanation: An acidic solution turns blue litmus red. On the pH scale, acids have values less than 7, whereas bases have values greater than 7. Solutions with pH equal to 7 are neutral in nature. Therefore the pH of the given solution is likely to be 6.

A solution turns blue litmus red, its pH is likely to be - (1) 11 (2) 9 (3) 5 (4) 10

Description : A solution turns blue litmus red, its pH is likely to be - (1) 11 (2) 9 (3) 5 (4) 10

Last Answer : (3) 5 Explanation: If the litmus paper turns red, it indicates the presence of an acid while if it turns blue, it indicates the presence of a base.

There are some substances whose odor changes in acidic or basic media. These are called - (1) Olfactory indicators (2) Litmus indicator (3) Gustatory indicators (4) All of the above

Description : There are some substances whose odor changes in acidic or basic media. These are called - (1) Olfactory indicators (2) Litmus indicator (3) Gustatory indicators (4) All of the above

Last Answer : (1) Olfactory indicators Explanation: An Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. Onion , clove oil and vanilla extract are examples.

Acids turn blue litmus into which color? (1) Green (2) Red (3) Pink (4) Colourless

Description : Acids turn blue litmus into which color? (1) Green (2) Red (3) Pink (4) Colourless

Last Answer : (2) Red Explanation: Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F).

Which of the properties listed below would you expect a solution to have if it is an acid? w) It feels slippery to the touch. x) It tastes bitter. y) It turns red litmus blue. z) It is a conductor of electricity.

Description : Which of the properties listed below would you expect a solution to have if it is an acid? w) It feels slippery to the touch. x) It tastes bitter. y) It turns red litmus blue. z) It is a conductor of electricity.

Last Answer : ANSWER: Z -- IT IS A CONDUCTOR OF ELECTRICITY.