Man can maintain an ecological balance in the biosphere by- (1) deforestation (2) developing new breeds of cultivated plants and domesticated animals (3) using insecticides and pesticides (4) understanding the delicate balance in the relative number of organisms

Man can maintain an ecological balance in the biosphere by- (1) deforestation (2) developing new breeds of cultivated plants and domesticated animals (3) using insecticides and pesticides (4) understanding the delicate balance in the relative number of organisms
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(4) understanding the delicate balance in the relative number of organisms Explanation: Ecological balance is a state of dynamic equilibrium within a community of organisms in which genetic, species and ecosystem diversity remain relatively stable, subject to gradual changes through natural succession." In other words, it refers to stable balance in the numbers of each species in an ecosystem. So to maintain this balance, the delicate balance between the organisms constituting and ecosystem should be understood.
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Man can maintain an ecological balance in the biosphere by (1) deforestation (2) developing new breeds of cultivated plants and domesticated animals (3) using insecticides and pesticides (4) understanding the delicate balance in the relative number of organisms

Description : Man can maintain an ecological balance in the biosphere by (1) deforestation (2) developing new breeds of cultivated plants and domesticated animals (3) using insecticides and pesticides (4) understanding the delicate balance in the relative number of organisms

Last Answer : understanding the delicate balance in the relative number of organisms

Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action? (1) Darwin’s Finches of Galapagos islands. (2) Herbicide resistant weeds. (3) Drug resistant eukaryotes. (4) Man-created breeds of domesticated animals like dogs. (a) only (1) (b) (1) and (3) (c) (2), (3) and (4) (d) only (4)

Description : Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action? (1) Darwin's Finches of Galapagos islands. (2) Herbicide resistant weeds. (3) Drug ... ) (b) (1) and (3) (c) (2), (3) and (4) (d) only (4)

Last Answer : (c) (2), (3) and (4)

Which one of the following statements on biosphere reserves is not correct? [CDS 2010] (a) In 1973, UNESCO launched a worldwide programme on man and biosphere (b) Biosphere reserves promote research on ecological conservation (c) Nanda Devi Biosphere Reserve is located in Madhya Pradesh (d) Biosphere reserves are multipurpose protected areas to preserve the genetic diversity in ecosystems

Description : Which one of the following statements on biosphere reserves is not correct? [CDS 2010] (a) In 1973, UNESCO launched a worldwide programme on man and biosphere (b) Biosphere reserves ... Pradesh (d) Biosphere reserves are multipurpose protected areas to preserve the genetic diversity in ecosystems

Last Answer : Ans: (c)

Biosphere refers to – (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms

Description : Biosphere refers to - (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans ... land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms

Last Answer : (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms Explanation: The biosphere is the global ecological system integrating all living beings ... up of the parts of Earth where life exists. It is the worldwide sum of all ecosystems.

The minimum fore at cover necessary to maintain ecological balance is (a) 50% of the total land area (b) 40% of the total land area (c) 33% of the total land area (d) 25% of the total land area

Description : The minimum fore at cover necessary to maintain ecological balance is (a) 50% of the total land area (b) 40% of the total land area (c) 33% of the total land area (d) 25% of the total land area

Last Answer : Ans: (c)

What should be the proportion of forest cover for India to maintain her ecological balance? (1) 11.1 percent (2) 22.2 percent (3) 33.3 percent (4) 44.4 percent

Description : What should be the proportion of forest cover for India to maintain her ecological balance? (1) 11.1 percent (2) 22.2 percent (3) 33.3 percent (4) 44.4 percent

Last Answer : (3) 33.3 percent Explanation: The minimum area of forests to maintain a good ecological balance has been regarded to be 33%. India lags on this front. The Green India campaign has been ... the Prime Minister for the afforestation of 6 million hectares. The current area under forests is 23%.

Deforestation results in : 1. flora destruction 2. fauna destruction 3. ecological disbalance (a) 2 and 3 (b) 1, 2 and 3 (c) 1 only (d) 1 and 3

Description : Deforestation results in : 1. flora destruction 2. fauna destruction 3. ecological disbalance (a) 2 and 3 (b) 1, 2 and 3 (c) 1 only (d) 1 and 3

Last Answer : Ans: (b)

Fertilizers, pesticides and insecticides may causes

Description : Fertilizers, pesticides and insecticides may causes

Last Answer : Fertilizers, pesticides and insecticides may causes A. air pollution B. water pollution C. Both A and B D. None of the above

Biosphere refers to (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms

Description : Biosphere refers to (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms

Last Answer : the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms

What is the term that describes the ability of organisms to maintain a stable internal state? a. Metabolism b. Homeostasis c. Biosphere d. Ecotype

Description : What is the term that describes the ability of organisms to maintain a stable internal state? a. Metabolism b. Homeostasis c. Biosphere d. Ecotype

Last Answer : b. Homeostasis

What should be the area under forest cover to maintain ecological balance? -Geography

Description : What should be the area under forest cover to maintain ecological balance? -Geography

Last Answer : Ecological balance refers to the balance of ecosystems which is maintained by the abundance of forest cover,vegetation, wetlands, rivers and streams and the harmony between the living organisms ... the natural balance. The percentage of forest cover which maintains ecological balance is 33%.

What is the minimum forest cover to maintain ecological balance?

Description : What is the minimum forest cover to maintain ecological balance?

Last Answer : 33%

Which of the following agricultural practices have been primarily responsible for pollution of our water resources ? A. Use of live-stock manure B. Use of chemical fertilisers C. Excessive use of chemical pesticides D. Deforestation (1) B and C (2) A, C and D (3) A and B (4) A, B and D

Description : Which of the following agricultural practices have been primarily responsible for pollution of our water resources ? A. Use of live-stock manure B. Use of chemical fertilisers C. Excessive use of chemical pesticides D. Deforestation (1) B and C (2) A, C and D (3) A and B (4) A, B and D

Last Answer : B and C

There is a need to keep larger area under forests for – (1) absorption of carbon dioxide (2) protecting wild-life (3) raising precipitation (4) ecological balance

Description : There is a need to keep larger area under forests for – (1) absorption of carbon dioxide (2) protecting wild-life (3) raising precipitation (4) ecological balance

Last Answer : (4) ecological balance Explanation: Ecological balance has been defined by various online dictionaries as "a state of dynamic equilibrium within a community of organisms in which genetic, species ... woodland. It restores eco-logical balance of all ecosystems and maintains bio-logical diversity.

Which one of the following statements correctly defines the term transhumance ? [NDA 1991] (a) Economy that solely depends upon animals (b) Farming in which' only one crop is cultivated by clearing hill slopes (c) Practice of growing crops on higher hill slopes in summer and foothills in winter (d) Seasonal migration of people with their animals up and down the mountains

Description : Which one of the following statements correctly defines the term transhumance ? [NDA 1991] (a) Economy that solely depends upon animals (b) Farming in which' only one crop is cultivated by ... and foothills in winter (d) Seasonal migration of people with their animals up and down the mountains

Last Answer : Ans: (d)

In your opinion, which is the most effective way to conserve the plant diversity of an area? (a) By tissue culture method (b) By creating biosphere reserve (c) By creating botanical garden (d) By developing seed bank

Description : In your opinion, which is the most effective way to conserve the plant diversity of an area? (a) By tissue culture method (b) By creating biosphere reserve (c) By creating botanical garden (d) By developing seed bank

Last Answer : (b) By creating biosphere reserve

Pollution caused by persistent pesticides is relatively more dangerous to which type of organisms?

Description : Pollution caused by persistent pesticides is relatively more dangerous to which type of organisms?

Last Answer : Pollution caused by persistent pesticides is relatively more dangerous to which type of organisms? A. ... C. First level carnivores D. Top carnivores.

Which of the following listed is not a feature of organic farming ? (1) The non-use of chemical fertilizers and pesticides (2) Soil is nurtured for furture use by maintaining micro-organisms (3) Use of synthetic fertilizers (4) Very less energy consumption

Description : Which of the following listed is not a feature of organic farming ? (1) The non-use of chemical fertilizers and pesticides (2) Soil is nurtured for furture use by maintaining micro-organisms (3) Use of synthetic fertilizers (4) Very less energy consumption

Last Answer : Use of synthetic fertilizers

If you were to have two different species (normally non-domesticated animals) as pets that are tame and docile towards you and each other, which two would you like to keep?

Description : If you were to have two different species (normally non-domesticated animals) as pets that are tame and docile towards you and each other, which two would you like to keep?

Last Answer : An elephant and an ocelot. :3

What animals, indigenous to the Americas, could have been domesticated and put to work by the Native Americans, the way the Europeans domesticated horses and cattle, camels, etc.?

Description : What animals, indigenous to the Americas, could have been domesticated and put to work by the Native Americans, the way the Europeans domesticated horses and cattle, camels, etc.?

Last Answer : Bats. I wouldn’t screw with them if they had bats.

What would happen in the world where we've successfully domesticated all wild animals?

Description : What would happen in the world where we've successfully domesticated all wild animals?

Last Answer : Black Panther I think they are gorgeous animals. Though I would hate to see wild animals not be wild anymore…even my MIL would be boring to be around if she were tamed.

What domesticated animals did the ancient Babylonians have?

Description : What domesticated animals did the ancient Babylonians have?

Last Answer : Wild animals roamed the jungles of vegetation along the riverbanks or lived in the deserts to the west. They included lions, leopards, wild cattle, boar, gazelle, ostrich, vultures and eagles.

What are the strengths and weaknesses of an ecological perspective in understanding life?

Description : What are the strengths and weaknesses of an ecological perspective in understanding life? 

Last Answer : The great strength of ecology is that it deals with living things in terms of their natural surroundings rather than in artificial isolation. Other branches of biology focus upon particular aspects of ... has been achieved, particularly where clear boundaries to a habitat exist, such as on islands 

Salination of soil is caused by – (1) pesticides (2) soil erosion (3) excess irrigation (4) crop rotation

Description : Salination of soil is caused by – (1) pesticides (2) soil erosion (3) excess irrigation (4) crop rotation

Last Answer : (3) excess irrigation Explanation: Soil salinity is the salt content in the soil: the process of increasing the salt content is known as salinization. Excess irrigation leads to increase in ... is also greatly increased by poor drainage and use of saline water for irrigating agricultural crops.

Crop rotation helps to – (1) lessen use of pesticides (2) eliminate parasites which have selective hosts (3) yield more crops (4) produce a greater choice of plant products

Description : Crop rotation helps to – (1) lessen use of pesticides (2) eliminate parasites which have selective hosts (3) yield more crops (4) produce a greater choice of plant products

Last Answer : (2) eliminate parasites which have selective hosts Explanation: The growing of different kinds of crops on a piece of land in a preplanned succession is known as crop rotation. In the rotation of ... This is because weeds and pests are very choosy about the host crop plant, which they attack.

Man first domesticated which animal? -General Knowledge

Description : Man first domesticated which animal? -General Knowledge

Last Answer : answer:

Man first domesticated which animal? -General Knowledge

Description : Man first domesticated which animal? -General Knowledge

Last Answer : answer:

The first domesticated animal by primitive man was (a) cat (b) cow (c) dog (d) horse.

Description : The first domesticated animal by primitive man was (a) cat (b) cow (c) dog (d) horse.

Last Answer : (c) dog

Deforestation kills many organisms that produce oxygen. What oxygen-producing organisms would remain if all the forests were destroyed?

Description : Deforestation kills many organisms that produce oxygen. What oxygen-producing organisms would remain if all the forests were destroyed?

Last Answer : plankton

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.

In an area with more than 200 cm annual rainfall and slopy hills, which of the following crops can be cultivated best? (a) Tea (b) Jute (c) Tobacco (d) Cotton shop.ssbcrack.com

Description : In an area with more than 200 cm annual rainfall and slopy hills, which of the following crops can be cultivated best? (a) Tea (b) Jute (c) Tobacco (d) Cotton shop.ssbcrack.com

Last Answer : Ans: (a)

In Thanjavur delta _______ crop is cultivated three times in a year. (a) Wheat (b) Rice (c) Sugarcane (d) Groundnut

Description : In Thanjavur delta _______ crop is cultivated three times in a year. (a) Wheat (b) Rice (c) Sugarcane (d) Groundnut

Last Answer : Ans: (b)

Consider the following statements: 1. In India, groundnut crop is raised mostly during the Khartf season under rainfed conditions. 2. In India, tobacco is cultivated only in black cotton soils. Which of the statements given above is/are correct? [IAS 2007] (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Description : Consider the following statements: 1. In India, groundnut crop is raised mostly during the Khartf season under rainfed conditions. 2. In India, tobacco is cultivated only in black cotton soils. Which of the statements given above is/ ... ] (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Last Answer : Ans: (a)

In India, during the last decade, the total cultivated land for which one of the following crops has remained more or less stagnant? [IAS 2010] (a) Rice (b) Oilseeds (c) Pulses (d) Sugarcane

Description : In India, during the last decade, the total cultivated land for which one of the following crops has remained more or less stagnant? [IAS 2010] (a) Rice (b) Oilseeds (c) Pulses (d) Sugarcane

Last Answer : Ans: (c)

Highly specialized form of agriculture in which crops like coffee, tea and rubber are cultivated refer to – (1) multiple cropping (2) plantation agriculture (3) terrace farming (4) extensive farming

Description : Highly specialized form of agriculture in which crops like coffee, tea and rubber are cultivated refer to – (1) multiple cropping (2) plantation agriculture (3) terrace farming (4) extensive farming

Last Answer : (2) plantation agriculture Explanation: Plantation agriculture is a form of commercial farming where crops are grown for profit. Usually, only one type of crop is grown in a plantation. Common examples include rubber, coffee, tea, bananas, sugar cane, oil palm, cocoa and tobacco.

The crop which occupies maxi-mum cultivated area in India is – (1) Rice (2) Wheat (3) Gram (4) Linseed

Description : The crop which occupies maxi-mum cultivated area in India is – (1) Rice (2) Wheat (3) Gram (4) Linseed

Last Answer : (1) Rice Explanation: India has the biggest area under rice cultivation, as it is one of the principal food crops. India is also one of the world's largest producers of white rice, accounting for 20% of all world rice production.

In a slanting hilly Indian terrain experiencing more than 200 cms of annual rainfall, which one of the following crops can be cultivated best? (1) Cotton (2) Jute (3) Tobacco (4) Tea

Description : In a slanting hilly Indian terrain experiencing more than 200 cms of annual rainfall, which one of the following crops can be cultivated best? (1) Cotton (2) Jute (3) Tobacco (4) Tea

Last Answer : (4) Tea Explanation: Well distributed rainfall ranging around 2000 mm to 5000 mm is considered suitable for successful tea plantation. The monthly average maximum temperature ranging between 28°C and 32°C during April to ... monsoon period, as much as 10 to 12 incises (250-300 mm) of rain per day.

what Using the ecological pyramid, explain how animals we think of pests (e.g. mosquitoes) are important to an ecosystem.?

Description : what Using the ecological pyramid, explain how animals we think of pests (e.g. mosquitoes) are important to an ecosystem.?

Last Answer : By now, you have learned that there is a lot of interaction between all the components of an ecosystem. However, did you know that we can represent this relationship between the energy ... a diagrammatic format. The predictable changes that are seen in organisms are shown by ecological succession.

The principal cause of soil damage in Punjab and Haryana is (a) Deforestation (b) Soil erosion (c) Excessive cultivation (d) Salinity and water logging

Description : The principal cause of soil damage in Punjab and Haryana is (a) Deforestation (b) Soil erosion (c) Excessive cultivation (d) Salinity and water logging

Last Answer : Ans: (d)

The Red soils develop a reddish colour due to: (a) deforestation and over-grazing (b) the presence of potash and magnesia (c) tropical monsoonal climate (d) a wide diffusion of iron in ancient crystalline and metamorphic Jacks

Description : The Red soils develop a reddish colour due to: (a) deforestation and over-grazing (b) the presence of potash and magnesia (c) tropical monsoonal climate (d) a wide diffusion of iron in ancient crystalline and metamorphic Jacks

Last Answer : Ans: (d)

The main reason for deforestation in Asia is - (1) excessive fuel wood collection (2) excessive soil erosion (3) floods (4) construction of roads

Description : The main reason for deforestation in Asia is - (1) excessive fuel wood collection (2) excessive soil erosion (3) floods (4) construction of roads

Last Answer : (1) excessive fuel wood collection Explanation: The main causes of total clearance are agriculture and in drier areas, fuelwood collection. The main cause of forest degradation is logging. Mining, ... and heating are overcutting forests'. This problem is worst in drier regions of the tropics.

The world’s growing appetite for what food product is a leading cause of tropical deforestation? (1) **** (2) Sugar (3) Lamb (4) Beef

Description : The world’s growing appetite for what food product is a leading cause of tropical deforestation? (1) Pork (2) Sugar (3) Lamb (4) Beef

Last Answer : (4) Beef Explanation: Researchers have recently focused on the economic agents which play a critical role in deforestation. Some such agents are: soy beans, beef, cattle, palm oil, ... world's growing appetite for beef has contributed significantly to the destruction of tropical rain forests.

The rate of deforestation is high in – (1) Tropical zone (2) Desert areas (3) Temperate zone (4) Boreal forest

Description : The rate of deforestation is high in – (1) Tropical zone (2) Desert areas (3) Temperate zone (4) Boreal forest

Last Answer : (3) Temperate zone Explanation: The rate of deforestation is high in Temperate Zone.

Which one of the following does not cause soil erosion? (1) Deflation (2) Deforestation (3) Weathering (4) Overcropping

Description : Which one of the following does not cause soil erosion? (1) Deflation (2) Deforestation (3) Weathering (4) Overcropping

Last Answer : (1) Deflation Explanation: Deflation is a decline in general price-levels, often caused by a reduction in the supply of money or credit. Deflation can also be brought about by direct contractions in ... in an economy, since the process often leads to a lower level of demand in the economy.

The main cause of recurring flood is – (1) Soil erosion (2) Deforestation (3) Silting of river beds (4) All of the above

Description : The main cause of recurring flood is – (1) Soil erosion (2) Deforestation (3) Silting of river beds (4) All of the above

Last Answer : (4) All of the above Explanation: Floods are caused by a variety of factors, both natural and man-made. Apart from soil erosion and silting of river beds which force the water of rivers ... against water flow and in turn protect the underlying soil from getting eroded and then getting washed away.

The increased incidence of floods in recent times in North India is due to – (1) increase in the annual rainfall, (2) increase in the silting of dams, (3) increased deforestation in the catchment area, (4) None of these

Description : The increased incidence of floods in recent times in North India is due to – (1) increase in the annual rainfall, (2) increase in the silting of dams, (3) increased deforestation in the catchment area, (4) None of these

Last Answer : (3) increased deforestation in the catchment area, Explanation: The frequency and severity of flooding in the Gangetic plain has steadily increased in recent years. Deforestation of the Terai appears to be one of the major causes.

"Slash and Burn agriculture" is the name given to - (1) method of potato cultivation (2) process of deforestation (3) mixed farming (4) shifting cultivation

Description : "Slash and Burn agriculture" is the name given to - (1) method of potato cultivation (2) process of deforestation (3) mixed farming (4) shifting cultivation

Last Answer : (4) shifting cultivation Explanation: Kharif crops refer to the planting, cultivation and harvesting of any domesticated plant sown In the rainy (monsoon) season on the Asian subcontinent. Such crops are ... , green gram, sugarcane, pigeon pea, black gram. groundnut. sunflower, soyabean, rice, etc.

The ‘Chipko Movement' is related to – (1) Wildlife preservation (2) Forest conservation (3) Scientific agriculture (4) Deforestation

Description : The ‘Chipko Movement' is related to – (1) Wildlife preservation (2) Forest conservation (3) Scientific agriculture (4) Deforestation

Last Answer : (2) Forest conservation Explanation: The Chipko movement or Chipko Andolan is a movement that practised the Gandhian methods of satyagraha and nonviolent resistance, through the act of hugging ... , environmental protests and movements the world over and created a precedent for nonviolent protest.

Which of the following is true about management meetingc. They are purely fact-based meetings with a left-brain type focus. d. They have very little dialogue except to ask clarification questions. e. They are oriented toward developing plans, tracking progress of existing plans, and making adjustments to plans in response to new information.s? Select one: a. They are short meetings to develop a common understanding of what the short-term priorities are for the project. b. They focus on short-term activities, usually less than a week in duration.

Description : Which of the following is true about management meetings? Select one: a. They are short meetings to develop a common understanding of what the short-term  priorities are for the project. ... , tracking progress of existing plans, and  making adjustments to plans in response to new information.

Last Answer : e. They are oriented toward developing plans, tracking progress of existing plans, and  making adjustments to plans in response to new information.

Marketing efforts are specifically aimed a : 1. Distributing "someting of value" to buyers and sellers 2. Facilitating satisfying exchange relationships 3. Developing new products for target markets 4. Understanding buyer behaviour to meet buyer needs 5. None of these

Description : Marketing efforts are specifically aimed a : 1. Distributing "someting of value" to buyers and sellers 2. Facilitating satisfying exchange relationships 3. Developing new products for target markets 4. Understanding buyer behaviour to meet buyer needs 5. None of these

Last Answer : Facilitating satisfying exchange relationships