Which of the following can be used for biological control of mosquitoes ? (1) DDT (2) Gambusia (3) Oil (4) Ointments

Which of the following can be used for biological control of mosquitoes ? (1) DDT (2) Gambusia (3) Oil (4) Ointments
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Gambusia
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Which of the following can be used for biological control of mosquitoes? (1) DDT (2) Gambusia (3) Oil (4) Ointments

Description : Which of the following can be used for biological control of mosquitoes? (1) DDT (2) Gambusia (3) Oil (4) Ointments

Last Answer : (2) Gambusia Explanation: Biological control is the use of natural enemies to manage the mosquito population. Effective biocontrol agent s include predatory fish that teed on mosquito larvae such as Gambusia affinis (mosquitofish) and some cyprinids (Carps and minnows).

Fish which can be used in biological control of mosquitoes/larvicidal fish is (a) Eel (b) carp (c) cat fish (d) Gambusia

Description : Fish which can be used in biological control of mosquitoes/larvicidal fish is (a) Eel (b) carp (c) cat fish (d) Gambusia

Last Answer : (d) Gambusia.

Consider the following statements: 1. Malaria can be contained with the introduction of larvicidal fish, gambusia, in ponds, tanks and puddles. 2. Gambusia is highly specific in devouring larvae of female anopheline mosquitoes. Which of the above statements are true? (a) 1, 2 (b) 1 only (c) 2 only (d) Neither of the two

Description : Consider the following statements: 1. Malaria can be contained with the introduction of larvicidal fish, gambusia, in ponds, tanks and puddles. 2. Gambusia is highly specific in devouring larvae of female anopheline mosquitoes. Which ... true? (a) 1, 2 (b) 1 only (c) 2 only (d) Neither of the two

Last Answer : Ans:(b)

The release of which of the following into ponds and wells helps in controlling mosquitoes? (1) Snaii (2) Crab (3) Dogfish (4) Gambusia fish

Description : The release of which of the following into ponds and wells helps in controlling mosquitoes? (1) Snaii (2) Crab (3) Dogfish (4) Gambusia fish

Last Answer : (4) Gambusia fish Explanation: The Gambusia fish, also known as mosquito fish, feeds on the larvae of mosquitoes. So it helps in controlling their population. Mosquito fish were ... to lower mosquito populations which in turn negatively affected many other species in each distinct bioregion.

The release of which of the following into ponds and wells helps in controlling mosquitoes? (1) Snail (2) Crab (3) Dogfish (4) Gambusia fish

Description : The release of which of the following into ponds and wells helps in controlling mosquitoes? (1) Snail (2) Crab (3) Dogfish (4) Gambusia fish

Last Answer : Gambusia fish

In India it is found recently that incidence of Malaria is increasing because (a) The mosquitoes have become DDT resistant (b) Of poverty in villages (c) Of poor sanitary conditions (d) On account of increase in population it has become impossible to maintain cleanliness everywhere

Description : In India it is found recently that incidence of Malaria is increasing because (a) The mosquitoes have become DDT resistant (b) Of poverty in villages (c) Of poor sanitary conditions (d) On account of increase in population it has become impossible to maintain cleanliness everywhere

Last Answer : Ans:(a)

Which can be used for biological control of mosquitoes? -General Knowledge

Description : Which can be used for biological control of mosquitoes? -General Knowledge

Last Answer : The answer is 'Gambusia '

Which can be used for biological control of mosquitoes? -General Knowledge

Description : Which can be used for biological control of mosquitoes? -General Knowledge

Last Answer : answer:

Which can be used for biological control of mosquitoes? -General Knowledge

Description : Which can be used for biological control of mosquitoes? -General Knowledge

Last Answer : answer:

Which can be used for biological control of mosquitoes?

Description : Which can be used for biological control of mosquitoes?

Last Answer : Gambusia

Which is correct about statements X and Y statement X. DDT shows biological magnification Statement Y : UV radiations causes ozone depletion .

Description : Which is correct about statements X and Y statement X. DDT shows biological magnification Statement Y : UV radiations causes ozone depletion .

Last Answer : Which is correct about statements X and Y statement X. DDT shows biological magnification Statement Y : UV ... D. X is not correct, Y is correct.

The biological amplification of DDT in the various trophic levels is known as

Description : The biological amplification of DDT in the various trophic levels is known as

Last Answer : The biological amplification of DDT in the various trophic levels is known as A. Green house ... B. biomagnification C. Eutrophication D. Pollution.

How to get rid of under-eye circles without ointments and make-up?

Description : It annoys me that I look like a zombie ...

Last Answer : Apply a used tea bag to the lids.

What are the best ointments to use for wart removal?

Description : What are the best ointments to use for wart removal?

Last Answer : The best ointments for removal is aloe vera. Apply it daily for fast removal.

The tinea infections of the human skin are a. All caused by fungi. b. Transmissible from pets. c. Treated with a variety of powders or ointments. d. All the above (a-c) are true.

Description : The tinea infections of the human skin are a. All caused by fungi. b. Transmissible from pets. c. Treated with a variety of powders or ointments. d. All the above (a-c) are true.

Last Answer : d. All the above (a-c) are true.

Why ophthalmic ointments are now days packed in capsules?

Description : Why ophthalmic ointments are now days packed in capsules?

Last Answer : 1. Sterility can be maintained. 2. Contamination can be avoided. 3. No wastage. 4. Easy to handle. 5. Easy for transportation. 6. Economical. 7. Easy to use or good patient compliance.

What is Gambusia is

Description : What is Gambusia is

Last Answer : Gambusia is A. Parasitic fish B. Pest of fish C. Fish predator of mosquitos larva D. Mosquito speading yellow fever

What is Gambusia is

Description : What is Gambusia is

Last Answer : Gambusia is A. Pest on fishes B. Pathogenic fishes C. Parasitic fish D. Fish predator of mosquito larvae

Fish, which eradicate the mosquito larva, is (a) Gambusia (b) cutter fish (c) Anabus (d) rohu.

Description : Fish, which eradicate the mosquito larva, is (a) Gambusia (b) cutter fish (c) Anabus (d) rohu.

Last Answer : (a) Gambusia

Which fish selectively feed on larva of mosquito? (a) Gambusia (b) Rohu (c) Clarias (d) Exocoetus

Description : Which fish selectively feed on larva of mosquito? (a) Gambusia (b) Rohu (c) Clarias (d) Exocoetus

Last Answer : (a) Gambusia

The fish used in the control of mosquitoes is

Description : The fish used in the control of mosquitoes is

Last Answer : Gambusia.

The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by (A) Biological oxygen pond (B) Aerated lagoons (C) Trickling filters (D) Gravity separator having oil skimming devices

Description : The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by (A) Biological oxygen pond (B) Aerated lagoons (C) Trickling filters (D) Gravity separator having oil skimming devices

Last Answer : (D) Gravity separator having oil skimming devices

Which of the following combinations represent renewable natural resources? (A) Oil, forests and tides (B) Fertile soil, fresh water and natural gas (C) Clean air, phosphates and biological diversity (D) Fishes, fertile soil and fresh water

Description : Which of the following combinations represent renewable natural resources? (A) Oil, forests and tides (B) Fertile soil, fresh water and natural gas (C) Clean air, phosphates and biological diversity (D) Fishes, fertile soil and fresh water

Last Answer : (D) Fishes, fertile soil and fresh water

Has DDT saved more lives than any other chemical compound?

Description : Has DDT saved more lives than any other chemical compound?

Last Answer : Water is a chemical compound (H2O). I would have to put that ahead of DDT, any day.

What is the full form of 'DDT' ? -How To ?

Description : What is the full form of 'DDT' ? -How To ?

Last Answer : The full form of 'DDT' is Dichlore-diphenyl-trichlore-ethane

Why did the United States ban the use of DDT?

Description : Why did the United States ban the use of DDT?

Last Answer : Why did the United States ban the use of DDT?

What is DDT ? What is the reaction of DDT in human body ?

Description : What is DDT ? What is the reaction of DDT in human body ?

Last Answer : DDT is dichloro diphenyl trichloroethane. It is a pesticide. Used to protect crops from pest infestation. DDT used as a pesticide can enter the human body and cause adverse reactions in the human ... that food can cause skin diseases. . The physical and mental development of the child is impaired

DDT was discovered in how many years ?

Description : DDT was discovered in how many years ?

Last Answer : DDT was discovered in 184 , but its use as a pesticide began in 1939.

What is DDT ?

Description : What is DDT ?

Last Answer : DDT is a household cleaning chemical whose full name is dichloro diphenyl trichloro ethane. One is basically a pesticide. When this toxin, which is soluble in lubricants (ie oils), is touched, the sodium channel of the insects becomes more open and paralysis occurs and the insects die.

Where is DDT used ?

Description : Where is DDT used ?

Last Answer : DDT is used in dry.

What is the full form of DDT ?

Last Answer : The full form of DDT is Dichloro Diphenyl Trichloro-Ethane

Who Discovered DDT ?

Last Answer : Discover DDT (Zidler)

Agricultural use of DDT was banned in India during

Description : Agricultural use of DDT was banned in India during

Last Answer : Agricultural use of DDT was banned in India during A. 1962 B. 1972 C. 1974 D. 1989

Now-a-days use of DDT as insecticide is banned because

Description : Now-a-days use of DDT as insecticide is banned because

Last Answer : Now-a-days use of DDT as insecticide is banned because A. It is less effective than other pesticides ... is vary high D. It has long residual effect.

Assertion : Secondary air pollutants are formed by interactin among primary pollutants and are more toxic Reason: DDT is secondary air pollutants

Description : Assertion : Secondary air pollutants are formed by interactin among primary pollutants and are more toxic Reason: DDT is secondary air pollutants

Last Answer : Assertion : Secondary air pollutants are formed by interactin among primary pollutants and are more toxic ... but reason is wrong D. Both are wrong

Find the correct order of biomagnification of DDT in an aquatic food chain:

Description : Find the correct order of biomagnification of DDT in an aquatic food chain:

Last Answer : Find the correct order of biomagnification of DDT in an aquatic food chain: A. Water -0.003 ppm, zooplankton ... fish -0.04 ppm, large fish -2.5 ppm

In an area where DDT had been used extensively, the population of birds declined significantly because:

Description : In an area where DDT had been used extensively, the population of birds declined significantly because:

Last Answer : In an area where DDT had been used extensively, the population of birds declined significantly because: A. ... birds D. Many bird eggs did not hatch.

Biomagnification of DDT causes decline in bird population by:

Description : Biomagnification of DDT causes decline in bird population by:

Last Answer : Biomagnification of DDT causes decline in bird population by: A. Bringing disturbance in calcium methabolism ... breaking of eggs D. All the above

DDT residues are rapidly passed through food chain causing biomagnification because DDT is

Description : DDT residues are rapidly passed through food chain causing biomagnification because DDT is

Last Answer : DDT residues are rapidly passed through food chain causing biomagnification because DDT is A. Water ... C. Liposoluble D. Nontoxic to aquatic animals

Biomagnification of DDT in an aquatic food chain starting from water having a concentration of 0.003 ppb may go, in fish eating birds, upto:

Description : Biomagnification of DDT in an aquatic food chain starting from water having a concentration of 0.003 ppb may go, in fish eating birds, upto:

Last Answer : Biomagnification of DDT in an aquatic food chain starting from water having a concentration of 0.003 ppb may go, in ... B. 50 ppm C. 25 ppm D. 2 ppm

Process by which insecticides like DDT reach man is

Description : Process by which insecticides like DDT reach man is

Last Answer : Process by which insecticides like DDT reach man is A. Bioaccumulation B. biomagnification C. Bioremediation D. Eutrophication.

Assertion : Agriculture output increased several times after introduction of DDT. Reason : DDT was the first insecticide used on a wide scale.

Description : Assertion : Agriculture output increased several times after introduction of DDT. Reason : DDT was the first insecticide used on a wide scale.

Last Answer : Assertion : Agriculture output increased several times after introduction of DDT. Reason : DDT was the ... but reason is wrong D. Both are wrong

What is DDT is

Description : What is DDT is

Last Answer : DDT is A. Organophosphates B. Organochlorine C. Carbonate D. Triazine

The concentration of DDT in the food chain, from lower to higher trophic levels:

Description : The concentration of DDT in the food chain, from lower to higher trophic levels:

Last Answer : The concentration of DDT in the food chain, from lower to higher trophic levels: A. ... Decreases C. Increases or decreases D. Remains constant

DDT has been a major pollutant because it

Description : DDT has been a major pollutant because it

Last Answer : DDT has been a major pollutant because it A. Kills aquatic animals B. Kills pests C. Destroy many valuable species D. Is nondegradable

DDT concentrartion recorded in human body has been

Description : DDT concentrartion recorded in human body has been

Last Answer : DDT concentrartion recorded in human body has been A. 0.3-0.7 ppm B. 1.3-3.1 ppm C. 13-31 ppm D. 30-70 ppm .

The concentration of DDT in the food chain, from lower to higher trophic levels:

Description : The concentration of DDT in the food chain, from lower to higher trophic levels:

Last Answer : The concentration of DDT in the food chain, from lower to higher trophic levels: A. Remain same B. Decreases in glaciers C. Increases D. Unpredictable

What is `DDT` is

Description : What is `DDT` is

Last Answer : `DDT` is A. Biodegradable pollutants B. Nondegradable pollutants C. not a pollutants D. An antiobiotic

Spraying of `DDT` produce pollution of the type:

Description : Spraying of `DDT` produce pollution of the type:

Last Answer : Spraying of `DDT` produce pollution of the type: A. Air and water B. Air and soil C. Crops and air D. Soil and water.

Draback of DDT as pesticide is

Description : Draback of DDT as pesticide is

Last Answer : Draback of DDT as pesticide is A. It becomes ineffective after some time B. It is less effective ... /rapidly degraded in nature D. its high cost.