Which of the following actions have to be avoided to prevent the depletion of DO (dissolved oxygen) in aquaculture? [a] Over-aerating, over-warming, over-harvesting [b] Over-seining, over-planting, over-medicating [c] Over-feeding, over-stocking, over-fertilizing [d] None of these [e] All of the above

Which of the following actions have to be avoided to prevent
the depletion of DO (dissolved oxygen) in aquaculture?
[a] Over-aerating, over-warming, over-harvesting
[b] Over-seining, over-planting, over-medicating
[c] Over-feeding, over-stocking, over-fertilizing
[d] None of these
[e] All of the above
by

1 Answer

Answer :

[c] Over-feeding, over-stocking, over-fertilizing
by

Related questions

With reference to agriculture, what are “Smother Crops”? a Crops that are grown for grazing of harvesting for immediate or future feeding of livestock. b Crops grown to conserve the soil moisture through their ground covering foliage. c Crops grown to suppress weeds by providing dense foliage and quick growing ability. d Crops cultivated to catch the forthcoming season when main crop fails. e Crops whose culture practices allow the infestation of weeds intensively.

Description : With reference to agriculture, what are Smother Crops ? a Crops that are grown for grazing of harvesting for immediate or future feeding of livestock. b Crops grown to conserve the soil ... season when main crop fails. e Crops whose culture practices allow the infestation of weeds intensively.

Last Answer : e Crops whose culture practices allow the infestation of weeds intensively.

Why must one control green plant growth in aquaculture or fish farming? [a] Plants compete with fish for available DO [b] Plants compete with fish for available O2 [c] Plants compete with fish for available CO2 [d] All of these [e] None of the above

Description : Why must one control green plant growth in aquaculture or fish farming? [a] Plants compete with fish for available DO [b] Plants compete with fish for available O2 [c] Plants compete with fish for available CO2 [d] All of these [e] None of the above

Last Answer : [a] Plants compete with fish for available DO

Central Institute of Fresh water Aquaculture is located at (a) W.B (b) Bihar (c) M.P. (d) Bihar

Description : Central Institute of Fresh water Aquaculture is located at (a) W.B (b) Bihar (c) M.P. (d) Bihar

Last Answer : (d) Bihar

If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l

Description : If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l

Last Answer : ANS: D

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

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

What is the minimum amount of dissolved oxygen in pond water ?

Description : What is the minimum amount of dissolved oxygen in pond water ?

Last Answer : Dissolved oxygen in pond water at least 5 m. Need to be grams / liter.

Feeding more than 8 billion people - how serious is the phosphorus depletion problem?

Description : Feeding more than 8 billion people - how serious is the phosphorus depletion problem?

Last Answer : answer:Hmmm, that could be serious. But most likely, it will result in gradually reduced crop output, and thus higher prices for certain food items. No resource just stops cold instantly, so there ... rubber ceased to be sufficient to meet the growing demand of civilization (and World War 2).

Medicating with your kid(s) with medical marijuana, what are the pros and cons?

Description : Medicating with your kid(s) with medical marijuana, what are the pros and cons?

Last Answer : Fox_News. You are making shit up and short skirts doesn’t mean you want to be raped.

Which one of the following feeding material is usually relished by the goats in India ? (A) Hay prepared from forest grasses (B) Straw of Sorghum vulgare (C) Silage of Sorghum vulgare (D) Straw of Phaseolus aureus (E) None of these

Description : Which one of the following feeding material is usually relished by the goats in India ? (A) Hay prepared from forest grasses (B) Straw of Sorghum vulgare (C) Silage of Sorghum vulgare (D) Straw of Phaseolus aureus (E) None of these

Last Answer : (D) Straw of Phaseolus aureus

Which of the following materials do not fit into the list of the raw materials used for feeding the earthworms in the scientific management of Vermiculture ? (A) Grass Clippings (B) Curd (C) Carrot tops (D) Lettuce leaves (E) All are useful

Description : Which of the following materials do not fit into the list of the raw materials used for feeding the earthworms in the scientific management of Vermiculture ? (A) Grass Clippings (B) Curd (C) Carrot tops (D) Lettuce leaves (E) All are useful

Last Answer : (D) Lettuce leaves

Any crop or combination of crops is grown for grazing or harvesting for immediate or future feeding to livestock?

Description : Any crop or combination of crops is grown for grazing or harvesting for immediate or future feeding to livestock?

Last Answer : Ans.Ley Crops

Dangerous gas for depletion of ozone layer is: (A)Ethane (B) Methane (C)CFC (D) Carbon-dioxide

Description : Dangerous gas for depletion of ozone layer is: (A)Ethane (B) Methane (C)CFC (D) Carbon-dioxide

Last Answer : (C)CFC

In the event of cabin depressurization, the actions of the pilot will be to: a. Immediately commence a diversion to a suitable alternate b. Increase engine power to provide additional airflow to the pressurization systems c. Maintain the aeroplane altitude to prevent further damage to the airframe by over loading of the structure d. Commence a descent to an altitude where the supplemental oxygen supply is sufficient for all crew and passengers

Description : In the event of cabin depressurization, the actions of the pilot will be to: a. Immediately commence a diversion to a suitable alternate b. Increase engine power to provide additional ... a descent to an altitude where the supplemental oxygen supply is sufficient for all crew and passengers

Last Answer : d. Commence a descent to an altitude where the supplemental oxygen supply is sufficient for all crew and passengers

Do you think there is global warming or some geographical regions are more affected by ozone depletion than others?

Description : Do you think there is global warming or some geographical regions are more affected by ozone depletion than others?

Last Answer : Global warming and ozone depletion both are different issues of global concerns. Global warming are due to release of green house gases and dealt with Kyoto protocol but ozone depletion are due to ... carbon and dealt with Montréal protocol. I think there is no any relation with each other

Assertion (A) : Presently, the global atmosphere is warming up. Reason (R): The depletion of stratospheric ozone layer has resulted in increase in ult

Description : Assertion (A) : Presently, the global atmosphere is warming up. Reason (R): The depletion of stratospheric ozone layer has resulted in increase in ult

Last Answer : Assertion (A) : Presently, the global atmosphere is warming up. Reason (R): The depletion of ... true but reason is wrong D. Both are wrong

How does ozone depletion contribute towards global warming?

Description : How does ozone depletion contribute towards global warming?

Last Answer : UV rays can enter into the earth so the temperature of the earth is increasing and earth globe is getting warmer. This is called global warming.

How many days from planting a sprouted potato to harvesting potatoes?

Description : How many days from planting a sprouted potato to harvesting potatoes?

Last Answer : Need Answer

How long from planting to harvesting watermelons?

Description : How long from planting to harvesting watermelons?

Last Answer : The general growing season for watermelon in Louisiana is June through September.

What is the moisture content of seeds during harvesting from the field ?

Description : What is the moisture content of seeds during harvesting from the field ?

Last Answer : Seed moisture is 18-40% at harvest time .

The tillage that is done immediately after crop harvesting to remove the weeds and to restore soil structure is? A. strip B. sub-soil C. fallow D. stubble

Description : The tillage that is done immediately after crop harvesting to remove the weeds and to restore soil structure is? A. strip B. sub-soil C. fallow D. stubble

Last Answer : D. stubble

Minimum support prices for major agricultural products are fixed by government a. After sowing b. In middle of crop period c. Before start of sowing season d. After harvesting

Description : Minimum support prices for major agricultural products are fixed by government a. After sowing b. In middle of crop period c. Before start of sowing season d. After harvesting

Last Answer : c. Before start of sowing season

Re-harvesting is also known as

Description : Re-harvesting is also known as

Last Answer : Ratooning

How long after planting potato seeds should urea be applied topically ?

Description : How long after planting potato seeds should urea be applied topically ?

Last Answer : Urea should be applied 30 to 35 days after planting of potato seeds .

Average planting distance (R P) of guava is— (A) 5 m 5 m (B) 6 m 6 m (C) 8 m 8 m (D) 10 m 10 m

Description : Average planting distance (R P) of guava is— (A) 5 m 5 m (B) 6 m 6 m (C) 8 m 8 m (D) 10 m 10 m

Last Answer : (B) 6 m 6 m

The optimum time for kharif soybean planting is: (a) First fortnight of June (b) First fortnight of July (c) Second fortnight of June (d) Second fortnight of July

Description : The optimum time for kharif soybean planting is: (a) First fortnight of June (b) First fortnight of July (c) Second fortnight of June (d) Second fortnight of July

Last Answer : (b) First fortnight of July

The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil (a) mulching (b) desertification (c) incineration (d) leaching

Description : The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil (a) mulching (b) desertification (c) incineration (d) leaching

Last Answer : (d) leaching

What is the Kyoto Protocol? (1) It is an agreement among countries to take steps for reducing acid rain (2) It is an agreement among countries to take steps for planting trees to control pollution (3) It is an agreement among countries to start using nu-clear energy (4) It is an agreement among countries to take steps for reducing global warming

Description : What is the Kyoto Protocol? (1) It is an agreement among countries to take steps for reducing acid rain (2) It is an agreement among countries to take steps for planting trees to control ... using nu-clear energy (4) It is an agreement among countries to take steps for reducing global warming

Last Answer : (4) It is an agreement among countries to take steps for reducing global warming Explanation: The Kyoto Protocol is an international treaty, which extends the 1992 United Nations Framework Convention on ... premise that (1) global warming exists and (2) man-made CO2 emissions have caused it.

What is the Kyoto Protocol? (1) It is an agreement among countries to take steps for reducing acid rain (2) It is an agreement among countries to take steps for planting trees to control pollution (3) It is an agreement among countries to start using nuclear energy (4) It is an agreement among countries to take steps for reducing global warming

Description : What is the Kyoto Protocol? (1) It is an agreement among countries to take steps for reducing acid rain (2) It is an agreement among countries to take steps for planting trees to control ... start using nuclear energy (4) It is an agreement among countries to take steps for reducing global warming

Last Answer : It is an agreement among countries to take steps for reducing global warming 

Impect of green house effect is: (A)Global warming (B) Ice melting (C) Sea formation (D) Sea level rise

Description : Impect of green house effect is: (A)Global warming (B) Ice melting (C) Sea formation (D) Sea level rise

Last Answer : (A)Global warming

Which of the following gases contributes maximum to global warming? (A) CFC (B) CO2 (C) Methane (D) NO 2

Description : Which of the following gases contributes maximum to global warming? (A) CFC (B) CO2 (C) Methane (D) NO 2

Last Answer : (C) Methane

Greenhouse gas having largest contribution to global warming A) Carbon dioxide (60%) (B) Nitrous oxide (5%) (C) Methane (15%) (D) CFC

Description : Greenhouse gas having largest contribution to global warming A) Carbon dioxide (60%) (B) Nitrous oxide (5%) (C) Methane (15%) (D) CFC

Last Answer : A) Carbon dioxide (60%)

Global warming is attributed to increase in concentration of green house gases like (A) CO2 (B) CFCs (C)CH4 (D) All of these

Description : Global warming is attributed to increase in concentration of green house gases like (A) CO2 (B) CFCs (C)CH4 (D) All of these

Last Answer : (D) All of these

What actions should you avoid while feeding a pre-school?

Description : What actions should you avoid while feeding a pre-school?

Last Answer : You should avoid being seen trying to feed a pre-school unlessyour goal is to be evaluated by a mental health professional. Thereare easier ways to do that, however.

Will I get sick if I eat vegetables that use a particular fertilizing method?

Description : Will I get sick if I eat vegetables that use a particular fertilizing method?

Last Answer : No, you will not become ill. I, myself, use many of Jerry Baker’s methods for my veg garden. These are natural methods to help you avoid harsh chemicals.

fertilizing morning glories

Description : fertilizing morning glories

Last Answer : don't... they like a well drained soil a little on the dry side

Why is my St. Augustine dying with proper watering and fertilizing

Description : Why is my St. Augustine dying with proper watering and fertilizing

Last Answer : There could be a number of reasons. First check to see if your water is moistening the soil at root level. Check for any insect pests that may be feeding on the foliage or on the roots. Are you ... up on "growing St. Augustine grass". If you have further questions or comments e-mail me- George.

Should I fertilize herbs? Are they fertilizing?

Description : Do you grow herbs and fertilize them somehow?

Last Answer : I only add compost

Fertilizing hot peppers.

Description : I bought a liquid fertilizer for vegetables and it is written on it. Fertilize 1 in 14 days (in wet soil). Why wet? Should I water them first and then water them again with fertilizer? Does anything happen when I pour them with fertilizer into dry soil?

Last Answer : It depends on the concentration of the fertilizer - you can "burn" the hair roots too high, or even fertilize the "cut out" plant. I water the fertilizer into the not completely dry soil after the previous watering.

Fertilizing hot peppers

Description : How long after transplanting hot peppers (I transplant when they have 2 uterine petals) can I use npk fertilizer for the first time?

Last Answer : You can add NPK to the soil before transplanting

What age do female humans start fertilizing eggs?

Description : What age do female humans start fertilizing eggs?

Last Answer : Females don't fertilize eggs it is the male that fertilizes theeggs

What Types of Fertilizers Can Be Used For Fertilizing Lawns?

Description : What Types of Fertilizers Can Be Used For Fertilizing Lawns?

Last Answer : For quality growth and substance, lawns need fertilizer. Goodfertilizer supplies food for the lawn and improves the condition ofthe soil for sustained growth. Fertilizing will improve thestrength and look ... . Try not to use them immediatelybefore a heavy rain either since infiltration and run-of

Narrate how particular dam in a flood-prone area has recently failed to prevent a flood. Find out why it happened. Could this be avoided? How? -Geography

Description : Narrate how particular dam in a flood-prone area has recently failed to prevent a flood. Find out why it happened. Could this be avoided? How? -Geography

Last Answer : In the year 2006, the floods that occurred in Maharashtra and Gujarat were due to the aggravation of floods by the opening of gates of dams. The major cause of this was the sedimentation in the ... water tanks if made in every house, will help in storing water in the case of heavy rainfall.

In Down’s cell, why the reaction between sodium metal and chlorine gas must be avoided? And how could we prevent reaction between them?

Description : In Down’s cell, why the reaction between sodium metal and chlorine gas must be avoided? And how could we prevent reaction between them?

Last Answer : Ans:In Down’s cell electrolysis of fused NaCl yields sodium metal and chlorine gas .If these are not separated these will react to form Nacl again. So to prevent these reaction in Down’s cell, we place a steel gauze between cathode and anode.

Do you have any experience/suggestions for home-scale aquaculture?

Description : Do you have any experience/suggestions for home-scale aquaculture?

Last Answer : I have not done it, but there are systems designed for aquaculture available on the internet.

Q9. How do you differentiate between capture fishing, mariculture and aquaculture? -Science

Description : Q9. How do you differentiate between capture fishing, mariculture and aquaculture? -Science

Last Answer : Capture fishing: It is a technique in which fishes are captured from various sources of natural resources like sea, rives, lake and pond. Mariculture: culturing of fish in marine fishes like ... water for commercial use. Aquaculture: Involved in culturing of fish in both marine and fresh water.

What is aquaculture? -Biology

Description : What is aquaculture? -Biology

Last Answer : answer:

What is polyculture in aquaculture? -Biology

Description : What is polyculture in aquaculture? -Biology

Last Answer : answer:

What is meant by aquaculture? -Science

Description : What is meant by aquaculture? -Science

Last Answer : Aquaculture is the breeding, rearing, and harvesting of fish, shellfish, algae, and other organisms in all types of water environments. ... There are two main types of aquaculture-marine and ... focus on marine aquaculture, which refers to farming species that live in the ocean and estuaries

Bee Keeping is known as - (1) Sericulture (2) Apiculture (3) Aquaculture (4) Agriculture

Description : Bee Keeping is known as - (1) Sericulture (2) Apiculture (3) Aquaculture (4) Agriculture

Last Answer : (2) Apiculture Explanation: Beekeeping (or apiculture, from Latin apis, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to ... sale to other beekeepers. A location where bees are kept is called an apiary or "bee yard".

The term aquaculture means (a) inland fisheries (b) aspergillosis (c) marine fisheries (d) both (a) and (c).

Description : The term aquaculture means (a) inland fisheries (b) aspergillosis (c) marine fisheries (d) both (a) and (c).

Last Answer : (d) both (a) and (c).