1. In an ecotone, the species which become abundant are called:
Edge species
Keystone species
Endemic species
Foster species
Answer.1. Edge species
Explanation:
In an ecotone, the species which become abundant are called Edge species.
EDGE species refers to animals that are Evolutionarily Distinct and Globally Endangered (hence EDGE). These species are considered to be one of a kind and, as its acronym suggests, are nearing extinction. Hence, scientists are trying to preserve them through a project which will aid conservation efforts.
2. The objective of Environment studies is
Raise consciousness about environment conditions
To teach environmentally appropriate behavior
Create an environmental ethic sensitive society
All of the above
Answer.4. All of the above
Explanation:
Environmental education is the process of learning through which participants acquire sufficient knowledge to contribute toward solving environmental problems.
Objectives of environmental education:
To create new behavioral patterns to show concern for the environment and understand how to manage it properly.
To foster clear awareness about economic, political, social, and ecological interdependence in rural and urban areas.
To raise consciousness about the need to protect and improve the environment.
Creating awareness about environmental problems among people.
Imparting basic knowledge about the environment and its allied problems.
Developing an attitude of concern for the environment.
Motivating the public to participate in environment protection and environment improvement.
Acquiring skills to help the concerned individuals in identifying and solving environmental problems.
Striving to attain harmony with Nature.
3. Which of the following is not influenced by human activities?
Destruction of mangroves and wetlands
Depletion of groundwater
Increased extinction rate of species
None of the above
Answer.4. None of the above
Explanation:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
4. Which of the following is a management option for air pollution?
Regulations and standards
Transport planning
Using CNG as fuel
All of these
Answer.4. All of these
Explanation:
The various options for the management of air pollution are as follows.
Reduction of use daily vehicles by processes like car pooling, using buses and trams, etc.
Using filters at the chimney exits
Implementing Regulations and standards
Transport Planning
Using CNG
5. Development activities on the hydrosphere cause
Air pollution
Soil pollution
Water pollution
Soil erosion
Answer.3. Water pollution
Explanation:
Development activities on the hydrosphere cause Water pollution.
Development activities can lead to various effects on the hydrosphere i.e. inadvertent discharge of petroleum, improper sewage disposal, as well as thermal pollution, are the main reasons for affecting the quality of the hydrosphere.
6. The species restricted to being present in one region are called
Edge species
Endemic species
Endangered species
Keystone species
Answer.2. Endemic species
Explanation:
Those species of plants arid animals which are found exclusively in a particular area are called endemic species to a zone, a state, or a country.
An endemic species are important because they are in the habitats restricted to a particular area due to climate change, urban development, or other occurrences. Endemic species are often endangered, so it is important to save the species.
7. The basic requirements of human beings are provided by
Industrialization
Agriculture
Nature
Urbanization
Answer.3. Nature
Explanation:
The basic requirements of human beings are provided by Nature.
Food, shelter, and clothes are the basic needs of human beings. Most of the above needs are received from plants and animals i.e Nature.
Food: All organisms need food to survive. Human beings get food for daily use through farming (a) & cultivation. Corn, paddy, wheat, fruits, and vegetables are agricultural products obtained from the plants. Similarly milk, meat, egg. etc are obtained from animals.
Shelter: The land is the shelter of human beings. They build houses, sheds, etc on the land according to their need. The raw materials for their construction works are obtained from natural sources. Forest is the main source of natural resources.
Cloth: Human beings need clothes to cover their body. The plants are the main source of ( raw materials for weaving clothes, for example, cotton farming provides cotton which is a very important raw material for clothes. However, human beings also use the skin and fur of animals to make clothes.
8. Environment is the life support system that includes
Air
Water
Land
All of the above
Answer.4. All of the above
Explanation:
The environment is our basic life support system because of offers the air for breathing, the food for eating, the water for drinking and other purposes and the land to live on. No living being can survive others in the absence of air, water, land, or food.
9. The term ‘Environment’ has been derived from the French word which means to encircle or surround
Environ
Oikos
Geo
Aqua
Answer.1. Environ
Explanation:
The term environment has been derived from a French word. Environ” means to surround. It refers to both abiotic (physical or non-living) and biotic (living) environments. The word environ- ment means surroundings, in which organisms live.
10. Biosphere is
The solid shell of inorganic materials on the surface of the earth
The thin shell of organic matter on the surface of the earth comprising of all the living things
The sphere which occupies the maximum volume of all the spheres
All the above
Answer.2. The thin shell of organic matter on the surface of the earth comprising of all the living things
Explanation:
The biosphere is the thin shell of organic matter on the surface of the earth comprising all the living things. It occupies the least volume of all of the spheres but it is the cause of the majority of the flow of matter through nature.
11. Atmosphere consists of 79 percent Nitrogen and 21 percent Oxygen by
Volume
Weight
Density
All of these
Answer.1. Volume
Explanation:
The atmosphere consists of 21 percent oxygen and 79 percent nitrogen by volume and 23.2 percent oxygen and 76.8 percent nitrogen by weight. All the constituents of air may be considered as inert gas with the exception of oxygen. The molecular weight of the inert gases is 28.2 but pure nitrogen is 28.0.
12. The word ‘Environment’ is derived from
Greek
French
Spanish
English
Answer.2. French
Explanation:
The term environment has been derived from a French word. Environ” means to surround. It refers to both abiotic (physical or non-living) and biotic (living) environments. The word environ- ment means surroundings, in which organisms live.
13. Which among the following is a climatic factor?
Pressure
Humidity
Temperature
All of the above
Answer.4. All of the above
Explanation:
Climatic factors are important in determining where particular species will grow.
Temperature, Humidity, Atmosphere Pressure, Rainfall, etc are the important factors responsible for Climate formation in any region.
14. World environment day is on:
5th May
5th June
18th July
16th August
Answer.2. 5th June
Explanation:
In 1972, the UN General Assembly designated 5 June as World Environment Day (WED). The first celebration, under the slogan “Only One Earth” took place in 1974.
15. Which of the following are major environmental issues involved in mining?
Air pollution
Water pollution
Soil degradation
All of the above
Answer.4. All of the above
Explanation:
The key environmental impacts of mining are on wildlife and fishery habitats, the water balance, local climates & the pattern of rainfall, sedimentation, the depletion of forests, Air pollution, water pollution, Soil Degradation, and the disruption of the ecology.
