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

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
by

1 Answer

Answer :

[a] Plants compete with fish for available DO
by

Related questions

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

Description : 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- ... c] Over-feeding, over-stocking, over-fertilizing [d] None of these [e] All of the above

Last Answer : [c] Over-feeding, over-stocking, over-fertilizing

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

Aquaculture facilities cultivate approximately ____ different species of fish and shellfish and grow a variety of aquatic plants. a. 20 c. 10 b. 30 d. 40

Description : Aquaculture facilities cultivate approximately ____ different species of fish and shellfish and grow a variety of aquatic plants. a. 20 c. 10 b. 30 d. 40

Last Answer : b. 30

In fish farming, water has been divided into how many levels ?

Description : In fish farming, water has been divided into how many levels ?

Last Answer : In fish farming, water has been divided into three levels. 1) Lower level 2) Middle level 3) High level.

Which one of the following is used in organic farming to prevent weed Germination & growth? A. Cow pea B. chick pea C. linseed D. Mulching

Description : Which one of the following is used in organic farming to prevent weed Germination & growth? A. Cow pea B. chick pea C. linseed D. Mulching

Last Answer : D. Mulching

134 Given below are the statements about the harmful effects of weeds on crop plants. i. They interfere in harvesting ii. They help crops to grow healthy. iii. They compete with crop plants for water, nutrients , space and light . iv. They affect plant growth . Choose the correct combination of statements a) i, iii, iv b)iii only c) iii , iv d) i, ii , iii, iv

Description : 134 Given below are the statements about the harmful effects of weeds on crop plants. i. They interfere in harvesting ii. They help crops to grow healthy. iii. They compete with crop plants for water, nutrients , space and light ... statements a) i, iii, iv b)iii only c) iii , iv d) i, ii , iii, iv

Last Answer : a) i, iii, iv

Mixed farming incorporates a mixture or combination of which of the following? a. Crops and Forest Trees b. Different Varieties of Crops c. Crops and Horticulture Plants d. Crops and Livestock e. None of these

Description : Mixed farming incorporates a mixture or combination of which of the following? a. Crops and Forest Trees b. Different Varieties of Crops c. Crops and Horticulture Plants d. Crops and Livestock e. None of these

Last Answer : d. Crops and Livestock

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

Which of the following is correct about the photorespiration? a. Photorespiration is more efficient in synthesizing glucose than photosynthesis. b. C3 plants are best adapted to handle c. Photorespiration is likely to occur when oxygen level is high and CO2 level is d. During photorespiration plants use oxygen to break down carbohydrates and release e. All of these

Description : Which of the following is correct about the photorespiration? a. Photorespiration is more efficient in synthesizing glucose than photosynthesis. b. C3 plants are best adapted to handle c. ... During photorespiration plants use oxygen to break down carbohydrates and release e. All of these

Last Answer : c. Photorespiration is likely to occur when oxygen level is high and CO2 level is

CO2 accepter in C4 plants is (A) PGA (B) RuBP (C)OAA (D) All

Description : CO2 accepter in C4 plants is (A) PGA (B) RuBP (C)OAA (D) All

Last Answer : (C)OAA

Cultivating plant or animal life within skyscrapers - What is your opinion of vertical farming?

Description : Cultivating plant or animal life within skyscrapers - What is your opinion of vertical farming?

Last Answer : Well I don't know about saving rainforests but they can certainly help in terms of sustainable use of resources. I have seen a number of houses that use vertical gardens to filter grey water ... and the money to have a really environmentally friendly house built, I would love to incorporate one.

L.D. converter gas (produced in steel plant) comprises mainly of (A) CO (upto 65%) & CO2 (B) CO2 & H2 (C) CO & O2 (D) CO2 & O2

Description : L.D. converter gas (produced in steel plant) comprises mainly of (A) CO (upto 65%) & CO2 (B) CO2 & H2 (C) CO & O2 (D) CO2 & O2

Last Answer : (A) CO (upto 65%) & CO2

Match List-I with List-II and select answer from the codes given below— List-I (a) White Revolution (b) Grey Revolution (c) Blue Revolution (d) Green Revolution List-II 1. Fertilizer production 2. Fish production 3. Cereal production 4. Milk production Codes :(a) (b) (c) (d) (A) 4 1 2 3 (B) 1 2 3 4 (C) 2 4 3 1 (D) 1 3 4 2

Description : Match List-I with List-II and select answer from the codes given below- List-I (a) White Revolution (b) Grey Revolution (c) Blue Revolution (d) Green Revolution List-II 1. Fertilizer production 2. Fish production 3. Cereal production 4. Milk ... (A) 4 1 2 3 (B) 1 2 3 4 (C) 2 4 3 1 (D) 1 3 4 2

Last Answer : (A) 4 1 2 3

Contract farming consists of...... (A) hiring land by farmers on contract basis for cultivation (B) supply of agreed quantity of produce to agreed price to the company (C) company taking on lease basis farmers’ land for cultivation (D) processing cash crops, vegetables etc. by company and to give back to farmers (E) providing inputs by company to farmers for improving quality of produce

Description : Contract farming consists of...... (A) hiring land by farmers on contract basis for cultivation (B) supply of agreed quantity of produce to agreed price to the company (C) company taking on ... and to give back to farmers (E) providing inputs by company to farmers for improving quality of produce

Last Answer : (C) company taking on lease basis farmers’ land for cultivation

The National Agricultural Insurance Scheme in its first two years of operation envisaged to cover...... (A) all crops-grown by small and marginal farmers only (B) all crops-cultivated with the help of crop loans only irrespective of the size of holding of the borrowers (C) all food crops-cultivated by all types of farmers (D) only horticultural crops (E) only seven commercial crops-grown under contract farming system

Description : The National Agricultural Insurance Scheme in its first two years of operation envisaged to cover...... (A) all crops-grown by small and marginal farmers only (B) all crops-cultivated with ... of farmers (D) only horticultural crops (E) only seven commercial crops-grown under contract farming system

Last Answer : (B) all crops-cultivated with the help of crop loans only irrespective of the size of holding of the borrowers

Contract farming consists of...... (A) hiring land by farmers on contract basis for cultivation (B) supply of agreed quantity of produce to agreed price to the company (C) company taking on lease basis farmers’ land for cultivation (D) processing cash crops, vegetables etc. by company and to give back to farmers (E) providing inputs by company to farmers for improving quality of prod

Description : Contract farming consists of...... (A) hiring land by farmers on contract basis for cultivation (B) supply of agreed quantity of produce to agreed price to the company (C) company taking on lease ... and to give back to farmers (E) providing inputs by company to farmers for improving quality of prod

Last Answer : (D) processing cash crops, vegetables etc. by company and to give back to farmers

Which of the following is the term for a whole farm management system which aims to deliver more sustainable agriculture? a. Community Farming b. Social Farming c. Complete Farming d. Holistic Farming e. Integrated Farming

Description : Which of the following is the term for a whole farm management system which aims to deliver more sustainable agriculture? a. Community Farming b. Social Farming c. Complete Farming d. Holistic Farming e. Integrated Farming

Last Answer : e. Integrated Farming

Which of the following statements correctly defines the term ‘Transhumance’? a. Economy that solely depends on animals b. Farming in which only one crop is cultivated by clearing hill tops c. Practice of growing crops on higher hill slopes in summers and foothills in winters d. Seasonal Migration of people with their animals up and down the mountains. e. None of the above

Description : Which of the following statements correctly defines the term Transhumance'? a. Economy that solely depends on animals b. Farming in which only one crop is cultivated by clearing hill tops c. Practice ... Seasonal Migration of people with their animals up and down the mountains. e. None of the above

Last Answer : d. Seasonal Migration of people with their animals up and down the mountains.

Monoculture i.e single crop grown over a large area is also known as? a. Commercial Grain Farming b. Intensive Farming c. Multiple Farming d. Mixed Farming e. Plantation Farming

Description : Monoculture i.e single crop grown over a large area is also known as? a. Commercial Grain Farming b. Intensive Farming c. Multiple Farming d. Mixed Farming e. Plantation Farming

Last Answer : e. Plantation Farming

Growing of two or more crops simultaneously on the same piece of land is called? a. Fanning b. Intercropping c. Mixed Cropping d. Mixed Farming e. None of these

Description : Growing of two or more crops simultaneously on the same piece of land is called? a. Fanning b. Intercropping c. Mixed Cropping d. Mixed Farming e. None of these

Last Answer : c. Mixed Cropping

The growing of grass or legumes in rotation with grain or tilled crops as a soil conservation measure is termed as? a. Crop rotation b. Ley farming c. Shifting cultivation d. Dairy farming e. Mixed farming

Description : The growing of grass or legumes in rotation with grain or tilled crops as a soil conservation measure is termed as? a. Crop rotation b. Ley farming c. Shifting cultivation d. Dairy farming e. Mixed farming

Last Answer : b. Ley farming

The repetitive growing of the same sole crop on the same land is known as? a Uniculture b Solo farming c Monoculture d Polyculture e None of these

Description : The repetitive growing of the same sole crop on the same land is known as? a Uniculture b Solo farming c Monoculture d Polyculture e None of these

Last Answer : b Solo farming

The order in which the crops are cultivated on a piece of land over a fixed period is called as- a. cropping pattern b. cropping system c. mono-croppingd. intercropping e. mixed farming

Description : The order in which the crops are cultivated on a piece of land over a fixed period is called as- a. cropping pattern b. cropping system c. mono-croppingd. intercropping e. mixed farming

Last Answer : d. intercropping

The inherent capacity of soil to provide essential chemical elements for the growth of plants is termed as – a. Soil Productivity b. Soil Fertility c. Soil capacity d. Soil flexibility e. Soil Utility

Description : The inherent capacity of soil to provide essential chemical elements for the growth of plants is termed as – a. Soil Productivity b. Soil Fertility c. Soil capacity d. Soil flexibility e. Soil Utility

Last Answer : b. Soil Fertility

The second Green Revolution aims at increasing agricultural output to promote (1) Availability of easy credit to big farmers (2) Co-operative farming (3) Inclusive growth (4) Development of rural sector

Description : The second Green Revolution aims at increasing agricultural output to promote (1) Availability of easy credit to big farmers (2) Co-operative farming (3) Inclusive growth (4) Development of rural sector

Last Answer : (3) Inclusive growth Explanation: In the Indian context, the Second Green Revolution is a change in agricultural production widely thought necessary to feed and sustain the growing population on ... as partners of development instead of a mere beneficiary of some government schemes or programme.

The second Green Revolution aims at increasing agricultural output to promote (1) Availability of easy credit to big farmers (2) Co-operative farming (3) Inclusive growth (4) Development of rural sector

Description : The second Green Revolution aims at increasing agricultural output to promote (1) Availability of easy credit to big farmers (2) Co-operative farming (3) Inclusive growth (4) Development of rural sector

Last Answer : Inclusive growth

A farming system in which airable crops are grown in alleys formed by trees or shrubs, to establish soil fertility and to enhance soil productivity, is known as— (A) Relay cropping (B) Multiple cropping (C) Alley cropping (D) Mixed cropping

Description : A farming system in which airable crops are grown in alleys formed by trees or shrubs, to establish soil fertility and to enhance soil productivity, is known as— (A) Relay cropping (B) Multiple cropping (C) Alley cropping (D) Mixed cropping

Last Answer : (C) Alley cropping

In farming, the land is used for growing food and fodder cropsand rearing livestock. a. Intensive Farming b. Plantation Farming c. Primitive Farming d. Mixed Farming

Description : In farming, the land is used for growing food and fodder cropsand rearing livestock. a. Intensive Farming b. Plantation Farming c. Primitive Farming d. Mixed Farming

Last Answer : d. Mixed Farming

What kind of cropping pattern is used in Rainfed farming areas? a. Single cropping b. Relay cropping c. Ratoon cropping d. Intercropping

Description : What kind of cropping pattern is used in Rainfed farming areas? a. Single cropping b. Relay cropping c. Ratoon cropping d. Intercropping

Last Answer : d. Intercropping

Growing of two or more crops simultaneously on the same piece of land is called (a) mixed cropping (b) mixed farming (c) intercropping (d) fanning

Description : Growing of two or more crops simultaneously on the same piece of land is called (a) mixed cropping (b) mixed farming (c) intercropping (d) fanning

Last Answer : (a) mixed cropping

Which one of the following makes a case for intensive, modern farming? a) Cropping pattern b) Higher output using organic method c) Remunerative price d) None of these

Description : Which one of the following makes a case for intensive, modern farming? a) Cropping pattern b) Higher output using organic method c) Remunerative price d) None of these

Last Answer : a) Cropping pattern

Monoculture is a typical characteristics of – a) Shifting cultivation b) Subsitence farmingc) Specialized horticulture d) Commercial grain farming

Description : Monoculture is a typical characteristics of – a) Shifting cultivation b) Subsitence farmingc) Specialized horticulture d) Commercial grain farming

Last Answer : d) Commercial grain farming

Which type of agriculture is also known as ‘Slash and burn farming’ ?

Description : Which type of agriculture is also known as ‘Slash and burn farming’ ?

Last Answer : Shifting Agriculture

Farming can be classified into how many types ?

Description : Farming can be classified into how many types ?

Last Answer : 3.Two

Can humans survive breathing an 80/20 mix of CO2 and O2?

Description : Can humans survive breathing an 80/20 mix of CO2 and O2?

Last Answer : Humans breath Air which is a mixture of about 78% Nitrogen, 21% Oxygen and trace other gases including 0.03% Carbon Dioxide. Much higher levels of Oxygen would make it easy for things to catch ... can tolerate a higher level because they use the Carbon Dioxide. and water to make sugars and cells.

If 48.0 g of O2 and 4.4 g of CO2 are placed in a 10.0 L container at 21c. what is the pressure of mixture of gases?

Description : If 48.0 g of O2 and 4.4 g of CO2 are placed in a 10.0 L container at 21c. what is the pressure of mixture of gases?

Last Answer : Need answer

What of the following reactions demonstrates a synthesis reaction A) Mg plus H2SO4 and gt MgSO4 plus H2 B) 2NaCl and gt 2Na plus Cl2 C) C plus O2 and gt CO2 D) Zn plus 2HCl and gt ZnCl2 plus H2?

Description : What of the following reactions demonstrates a synthesis reaction A) Mg plus H2SO4 and gt MgSO4 plus H2 B) 2NaCl and gt 2Na plus Cl2 C) C plus O2 and gt CO2 D) Zn plus 2HCl and gt ZnCl2 plus H2?

Last Answer : C+O2 →CO2

If you start with 32 grams of CH4 and react it with O2 to form 88 grams CO2 and 72 grams H2O. How much O2 in grams was consumed?

Description : If you start with 32 grams of CH4 and react it with O2 to form 88 grams CO2 and 72 grams H2O. How much O2 in grams was consumed?

Last Answer : 128 g of oxygen are needed.

If you start with 32 grams of CH4 and react it with O2 to form 88 grams CO2 and 72 grams H2O. How much O2 in grams was consumed?

Description : If you start with 32 grams of CH4 and react it with O2 to form 88 grams CO2 and 72 grams H2O. How much O2 in grams was consumed?

Last Answer : 128 g of oxygen are needed.

The oxygen d issoc iat ion curve for hemoglobin is shifted to the right by (A) Decreased O2 tension (B) Decreased CO2 tension (C) Increased CO2 tension (D) Increased pH

Description : The oxygen d issoc iat ion curve for hemoglobin is shifted to the right by (A) Decreased O2 tension (B) Decreased CO2 tension (C) Increased CO2 tension (D) Increased pH

Last Answer : Answer : C

After re leas ing O2 at the tissues, hemoglobin transports (A) CO2 and protons to the lungs (B) O2 to the lungs (C) CO2 and protons to the tissue (D) Nutrients

Description : After re leas ing O2 at the tissues, hemoglobin transports (A) CO2 and protons to the lungs (B) O2 to the lungs (C) CO2 and protons to the tissue (D) Nutrients

Last Answer : Answer : A

Tubercular bacilli grow best in a. Absence of O2 b. Presence of CO2 c. Presence of O2 d. None of these

Description : Tubercular bacilli grow best in a. Absence of O2 b. Presence of CO2 c. Presence of O2 d. None of these

Last Answer : Ans: B

In a petrol engine, which of the following gas gets exhausted out without burning and without transformation? a. CO2 b. CO c. O2 d. N2

Description : In a petrol engine, which of the following gas gets exhausted out without burning and without transformation? a. CO2 b. CO c. O2 d. N2

Last Answer : ANSWER d. N2

Blood haemoglobin has high affinity for (a) CO2 (b) CO (c) O2 (d) H

Description : Blood haemoglobin has high affinity for (a) CO2 (b) CO (c) O2 (d) H

Last Answer : Ans:(b)

O2 released in the process of photosynthesis comes from (a) CO2 (b) Water (c) Sugar (d) Pyruvic acid

Description : O2 released in the process of photosynthesis comes from (a) CO2 (b) Water (c) Sugar (d) Pyruvic acid

Last Answer : Ans:(b)

The balance of CO2 and O2 in atmosphere is due to _____. (1) Transportation (2) Photosynthesis (3) Respiration (4) Evaporation

Description : The balance of CO2 and O2 in atmosphere is due to _____. (1) Transportation (2) Photosynthesis (3) Respiration (4) Evaporation

Last Answer : (2) Photosynthesis Explanation: Photosynthesis takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere.

Photo chemical smog is a result-ant of the reaction among – (1) High concentration of NO2, O3, and CO in the evening (2) CO, CO2 and NO2 at low temperature (3) CO, O2 and peroxy acetyl nitrate in the presence of Sunlight (4) NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight

Description : Photo chemical smog is a result-ant of the reaction among – (1) High concentration of NO2, O3, and CO in the evening (2) CO, CO2 and NO2 at low temperature (3) CO, O2 and peroxy acetyl nitrate in the presence of Sunlight (4) NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight

Last Answer : (4) NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight Explanation: Photochemical smog is a unique type of air pollution which is caused by reactions between sunlight and pollutants like hydrocarbons and nitrogen dioxide (NO and NO2).

Which of the following is not a greenhouse gas? (1) Water vapour (2) O2 (3) O3 (4) CO2

Description : Which of the following is not a greenhouse gas? (1) Water vapour (2) O2 (3) O3 (4) CO2

Last Answer : (2) O2 Explanation: Greenhouse gases are those that can absorb and emit infrared radiation, but not radiation in or near the visible spectrum. The most abundant greenhouse gases in Earth's atmosphere are: Water ... , Carbon dioxide (CO2), Methane (CH4), Nitrous oxide (N2O), Ozone (O3) and CFCs.

Supersonic jet causes pollution by thinning of - (1) O3 layer (2) O2 layer (3) SO2 layer (4) CO2 layer

Description : Supersonic jet causes pollution by thinning of - (1) O3 layer (2) O2 layer (3) SO2 layer (4) CO2 layer

Last Answer : (1) O3 layer Explanation: Three forms (or allotropes) of oxygen are involved in the ozone-oxygen cycle: oxygen atoms (O or atomic oxygen), oxygen has (O2 or diatomic oxygen), and ... oxygen radicals. The atomic oxygen radicals then combine with separate O2 molecules to create two O3 molecules.

Which of the following gases makes bread or cake rise making them soft and spongy? (1) CO (2) H2 (3) CO2 (4) O2

Description : Which of the following gases makes bread or cake rise making them soft and spongy? (1) CO (2) H2 (3) CO2 (4) O2

Last Answer : (3) CO2 Explanation: Breads rise due to the process of fermentation, a chemical process by which molecules such as glucose are broken down an aerobically.