Description : Match the organisms in column-I with habitats in column-II. Column-I Column-II A. Halophiles (i) Hot springs B. Thermoacidophiles (ii) Aquatic environment C. Methanogens (iii)Guts of ruminants D. Cyanobacteria (iv) Salty area Select the correct ... , C-(ii), D-(i) (d) A-(ii), B-(iv), C-(iii), D-(i)
Last Answer : (a) A-(iv), B-(i), C-(iii), D-(ii)
Description : A few organisms are known to grow and multiply at temperatures of 100-105o C. They belong to (a) thermophilic sulphur bacteria (b) hot spring blue-green algae (c) methanogenic archaebacteria (d) marine archaebacteria.
Last Answer : (a) thermophilic sulphur bacteria
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 : Radioactive substances present in the polluted water stream can be removed by (A) Biological oxygen treatment (B) Coagulation and filtration (C) Adsorption in ion exchange materials (D) None of these
Last Answer : (C) Adsorption in ion exchange materials
Description : Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by (A) Natural aeration of water stream (B) Photosynthetic action of algae (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes (A) Fire hazards (B) Explosion hazards (C) Persistent foam (D) Depletion of dissolved oxygen
Last Answer : (C) Persistent foam
Description : Biological oxidation ponds remove organic matters present in the polluted water by (A) Using the activities of bacteria and other micro organisms (B) Aerobic oxidation (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Lagoons used for purification of polluted water (A) Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds (B) Use micro-organisms/bacteria in presence of dissolved oxygen (C) Gives an ... 1 mg/litre and BOD = 3.8 mg/litre (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Which one of the following statements aptly define the term Taxonomy ? a. Branch of science concerned with classification, especially of organisms. b. Study which deals with emotional ... reproduction in cattle. d. Branch of zoology concerned with habitat preference among nocturnal organisms.
Last Answer : a. Branch of science concerned with classification, especially of organisms.
Description : Which one of the following statements aptly define the term Taxonomy ? a. Branch of science concerned with classification, especially of organisms. b. Study which deals with emotional ... reproduction in cattle. d. Branch of zoology concerned with habitat preference among nocturnal organisms
Description : abundant energy cycle in living organisms -Biology
Last Answer : answer:
Description : Which is the most abundant organic mol- ecules in living organisms?
Last Answer : Proteins
Description : Gause's principle of competitive exclusion states that (a) no two species can occupy the same niche indefinitely for the same limiting resources (b) larger organisms exclude smaller ... through competition (d) competition for the same resources exclude species having different food preference
Last Answer : (c) more abundant species will exclude the less abundant species through competition
Description : What are methanogens? -Biology
Description : What is the scientific name for methanogens? -Biology
Description : Why are methanogens autotrophs? -Biology
Description : What are methanogens and where do they live? -Biology
Description : Methanogens example -Biology
Description : Which of the following are true archaebacteria? (1) Extreme halophiles (2) Extreme thermophyles (3) Methanogens (4) Presence of peptidoglycan cell wall Ans. (a) 43; Which of the following are ... plants ? (1) Saintpaulia ionantha (2) Ceratozamia hildae (3) Punica granatum (4) Senecio hadrasomum
Last Answer : Ans. ((c))
Description : Which bacteria is utilized in gobar gas plant? (a) Methanogens (b) Nitrifying bacteria (c) Ammonifying bacteria (d) Denitrifying bacteria
Last Answer : (a) Methanogens
Description : Which one of the following pairs is wrongly matched? (a) Yeast - Ethanol (b) Streptomycetes - Antibiotic (c) Coliforms - Vinegar (d) Methanogens - Gobar gas
Last Answer : c) Coliforms - Vinegar
Description : The guts of cow and buffalo possess (a) methanogens (b) cyanobacteria (c) Fucus sp. (d) Chlorella sp.
Last Answer : (a) methanogens
Description : Select the mismatch. (a) Gas vacuoles – Green bacteria (b) Large central vacuoles – Animal cells (c) Protists – Eukaryotes (d) Methanogens – Prokaryotes
Last Answer : (b) Large central vacuoles – Animal cells
Description : The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the (a) methanogens (b) eubacteria (c) halophiles (d) thermoacidophiles.
Description : Methanogens belong to (a) eubacteria (b) archaebacteria (c) dinoflagellates (d) slime moulds.
Last Answer : (b) archaebacteria
Description : The acetate-utilizing methanogens are responsible for A.20% of methane produced in a biogas reactor B.50% of methane produced in a biogas reactor C.70% of methane produced in a biogas reactor D.85% of methane produced in a biogas reactor
Last Answer : C.70% of methane produced in a biogas reactor
Description : Which one of the following is NOT a genus within the gram-positive bacteria? a. Staphylococcus b. Methanogens c. Mycoplasma d. Bacillus and Clostridium
Last Answer : b. Methanogens
Description : The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may ... of reduced level (A) 1500 m (B) 1505 m (C) 1475 m (D) 1485 m
Last Answer : (D) 1485 m
Description : Water may not contain much impurity if its source is (A) Reservoirs (B) Stream flowing in plains (C) Lakes in lower regions (D) Spring along hill slopes
Last Answer : (D) Spring along hill slopes
Description : i have this tree in my yard..it blooms in the spring and by fall there are little what looks like little apples
Last Answer : I could be apple.....maybe needs lime & fertilizer in the fall and spring to catch up. You also could cut a small branch and take it to the lawn & garden center to ask them if your thoughts of apple are correct. If you do find ... .ph should be 5.0-6.5..............test first....................
Description : The new leaves on my maple tree have brown spots and are falling off. My yard looks like it is fall instead of Spring.
Last Answer : It sounds like a disease, a fungus or a nutrition problem. My best advice is to take a couple of the leaves to a nursery that has a plant info desk and have them examined. This kind of issue needs to have someone actually look at the leaves to give an accurate diagnosis.
Description : In which direction of flow of stream is controlled by rock structure?
Last Answer : Consequent
Description : 1. According to which article untouchability is abolished and its practice is punishable? 2. The author of the controversial book Lajja' is a citizen of which country? 3. Which game is not ... Perihelion)? 20. When did the battle which is the story of Mahabharata most probably take place ?
Last Answer : Answer : 1. Article 17 2. Bangladesh 3. Cricket 4. Consequent 5. Lala Hardayal 6. Kerosene 7. Silicon 8. Chief Justice of India 9. Barren Island 10. Sikandar Lodi 11. Bank of Hindustan 12. Billiards 13. ... . 2010 17. Ministry of Home Affairs 18. Beethovan L.V. 19. January 3rd 20. Around 1000 B. C
Description : Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by (A) Quenching of hot coke (B) Discharging in the river stream (C) Filtration and recycling for cooling coke oven gas (D) None of these
Last Answer : (A) Quenching of hot coke
Description : ________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant. (A) Calcium (B) Fluorine (C) Phosphorous (D) Sulphur
Last Answer : (B) Fluorine
Description : What remains or traces of organisms preserved in a rock are called?
Last Answer : fossils
Description : How Remains or traces organisms preserved in rock are called?
Last Answer : What is the answer ?
Description : Remains or traces of organisms preserved in rock are called?
Last Answer : Fossils
Description : Read the following five statements (A to E) and select the option with all correct statements. A. Mosses and lichens are the first organisms to colonise a bare rock. B. Selaginella is a homosporous pteridophyte. C. Coralloid roots in Cycas ... D and E (b) B, C and E (c) A, C and D (d) B, C and D
Last Answer : (a) A, D and E
Description : Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the (A) Industrial chimney exhaust (B) Automobiles exhaust (C) Photochemical reaction in polluted atmosphere (D) Burning of domestic fuel
Last Answer : (B) Automobiles exhaust
Description : Suppose a researcher has some prejudices in relation to some problem, then the research carried out by him, is called as Options: A) Value oriented research B) Polluted research C) Inadequate research D) Prejudiced research
Last Answer : B) Polluted research
Description : Has anyone here ever been to the House on the Rock in Spring Green, Wisconsin?
Last Answer : I lived in Madison for a long time and have been there once. It is really cool, totally recommend it. But there is very little else in the way of fun in that part of WI that I'm aware of. Pretty rural. I ... a very cool town. If you want to do that, let me know and I'll send you to the good places.
Description : Name the diseases caused by drinking polluted water.
Last Answer : There are several diseases that can be caused by drinking polluted water. Some of the most common include: Cholera: a bacterial infection that causes severe diarrhea and dehydration. It is often spread ... clean and safe, either by treating it properly or by using clean and safe sources of water.
Description : I heard a comedian say that "In some countries, people feel lucky if they can get an occassional drink of even polluted water. Yet here in America, we have so much, we PLAY in it in water parks". What do you think about that statement?
Last Answer : I don’t get the joke. It’s true.
Description : How is land polluted? -SST 10th
Last Answer : . Land is polluted by wastes from nuclear power plants, nuclear and weapon production facilities. . Dumping of wastes, especially glass, harmful chemicals, industrial effluents, packaging, salts and ... into the soil carrying the pollutants to the ground and the groundwater also gets contaminated.
Description : Fish die in water bodies polluted by sewage, why? -Do You Know?
Description : By which is the Atmosphere of big metropolition cities is polluted most? -Do You Know?
Description : Which gas in polluted air reduces the oxygen carrying capacity of blood in human body ?
Last Answer : Carbon monoxide gas from polluted air reduces the oxygen carrying capacity of blood in human body.
Description : Which is the most polluted city in the world ?
Last Answer : Dhaka is the most polluted city in the world.