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

1 Answer

Answer :

Ans. ((c))

Related questions

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)

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

Last Answer : (a) Chlorella

Description : Which of the following species does not have the ability to fix atmospheric nitrogen? (a) Azotobactor (b) Anabaena (c) Nostoc (d) Spirogyra

Last Answer : (d) Spirogyra

Description : A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is (a) Tolypothrix (b) Chlorella (c) Nostoc (d) Anabaena.

Last Answer : (d) Anabaena.

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.

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

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

Description : Which one of the following is wrongly matched? (a) Spirogyra - Motile gametes (b) Sargassum - Chlorophyll (c) Basidiomycetes - Puffballs (d) Nostoc - Water blooms

Last Answer : (a) Spirogyra - Motile gametes

Description : What causes blue-green algae blooms? -Biology

Last Answer : answer:

Description : Water blooms are formed by a) Lemna b) Hydrilla c) Water hyacinth d) Planktonic algae.

Last Answer : d) Planktonic algae.

Description : Golgi apparatus is absent in (a) Higher plants (b) Yeast (c) Bacteria and blue-green algae (d) Liver cells

Last Answer : Ans. ((c))

Description : Select the correct statement: (1) Lenticel is the exit route for transpiration (2) The action spectra of transpiration is blue and red (3) Transpiration helps the plant to remain cool (4) Transpiration can be measured by photometer

Last Answer : Ans. ((c))

Description : Is there a nutritional difference between the different colored bell peppers?

Last Answer : The bell pepper has many color and it can be green, red, yellow, orange and, more rarely, white, purple and brown depending on when they are harvested. Variety + Time of maturity= color Bell Boy ( ... at the red-ripe stage; but "green chiles," the immature fruits, are also required for some recipes.

Description : How can blue-green algae blooms be treated? -Biology

Last Answer : answer:

Description : Oxygen is not produced during photosynthesis by (a) Green sulphur bacteria (b) Nostoc (c) Cycas (d) Chara.

Last Answer : (a) Green sulphur bacteria

Description : Oxygen is not produced during photosynthesis by (1) Green sulphur bacteria (2) Nostoc (3) Cycas (4) Chara

Last Answer : (1) Green sulphur bacteria

Description : Reaction centre of photo system-I in green plants is: (a) P680 (c) P690 (b) P700 (d) P780

Last Answer : Ans. ((c))

Description : Which one is green manure a) Sesbania b) Rice c) Oat d) Maize

Last Answer : a) Sesbania

Description : A green house gas is a) H2 b) CO c) CO2 d) N2.

Last Answer : c) CO2

Description : Which is not a green house gas? a) CFC b) CH4 c) CO d) H2

Last Answer : a) CFC

Description : Green house effect is related to a) Increased growth of green algae b) Global warming c) Cultivation of vegetables in house

Last Answer : b) Global warming

Description : Composted manure is produced froma) Farmyard manure and green manure b) Farm refuse and household refuse c) Organic remains of biogas plants d) Rotten vegetables and animal refuse

Last Answer : d) Rotten vegetables and animal refuse

Description : Green manure plants used by farmers mainly belong toa) Compositae b) Leguminosae c) Solanaceae d) Poaceae 

Last Answer : b) Leguminosae

Description : In cold places frost damage can be reduced in horticultural crops using these methods except a) Overhead sprinklers at night b) Green houses and shade nets c) Wind breaks placement d) Appropriate fungicide application

Last Answer : b) Green houses and shade nets

Description : Deficiency of molybdenum causes: (a) Wilting (b) Mottling (c) Reclamation (d) Necrosis

Last Answer : Ans. ((b))

Description : Automobile exhaust gas that causes major respiratory problem is a) CO b) CH4 C) NO2 d) Chlorine.

Last Answer : a) CO 

Description : Ozone hole causes a) Global warming b) Reduction in the rate of photosynthesis c) More UV rays come to earth d) All the above.

Last Answer : c) More UV rays come to earth

Description : SO2 pollution causes a) Plasmolysis b) Destruction of cell wall c) Destruction of Golgi bodies

Last Answer : c) Destruction of Golgi bodies

Description : Which Pollutant causes leaf curling a) CO b) H2S c) O3 d) SO2 

Last Answer : d) SO2

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

Last Answer : answer:

Description : What is symbiotic relationship between fungus and alga?

Last Answer : Mutualism because they both benefit

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)

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.

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

Last Answer : (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 ... litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly

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

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.

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

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

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

Last Answer : (a) Volvox

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 : 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

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

Last Answer : (1) Volvox

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

Last Answer : Cephaleuros

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

Last Answer : lichen

Description : Why is the Anabaena easier to see than some of the other cells?

Last Answer : Need answer

Description : The biofertilizers are (a) Anabaena and Azolla (b) cow dung, manure and farmyard waste (c) quick growing crop ploughed under soil (d) none of these.

Last Answer : (a) Anabaena and Azolla

Description : Which of the following is non-symbiotic biofertilizer? (a) Anabaena (b) Rhizobium (c) VAM (d) Azotobacter

Last Answer : (d) Azotobacter

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

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