Tag: human influences on the environment

Questions Related to human influences on the environment

What is auxiliary energy in man subsidized solar powered ecosystem?

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. Man and Machine

  2. wind and Rain

  3. Organic matter

  4. Nutrient cycle

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Correct Option: A

Public awareness of environment creates _____________

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. Environment protection

  2. Environment degradation

  3. Environmental improvement

  4. Environmental cultivation

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Correct Option: A

Vulcanisation of Rubber is carried out to make it

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. Soft

  2. Elastic

  3. Resistant to temperature changes

  4. Hard and inelastic

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Correct Option: C

Choose the correct answers from the alternatives given.
Most of biological diversity has probably arisen by:

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. anagenesis

  2. cladogenesis

  3. sympatric speciation

  4. phyletic evolution

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Correct Option: B
Explanation:

Anagenesis and cladogenesis are the two main ways speciation occurs. One involved the slow transition of one species to another. Cladogenesis involved the separation of a species into two or more groups, with each group then becoming its own separate species.

Phyletic gradualism is a model of evolution which theorizes that most speciation is slow, uniform and gradual. When evolution occurs in this mode, it is usually by the steady transformation of a whole species into a new one.
Sympatric speciation is a geographic mode of speciation due to geographical isolation new species is form.
So correct answer is B, cladogenesis.

High concentration of $SO _{2}$, $NO _{2}$, $CO _{2}$, SPM in atmosphere, causes threats to

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. Human health

  2. Environment

  3. Plants

  4. Soil

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Correct Option: A

State whether the following statements are true or false.
Human intervention in natural community interactions usually makes the community more stable 

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. True

  2. False

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Correct Option: B
Explanation:

Humans cause a lot of destruction to the natural world, through deforestation, starting forest fires, farming, and building things. So, when we destroy the environment making it unstable, we allow a new environment where secondary succession begins to take place. It is still slow, and habitats take hundreds of years to rebuild, and often are nothing like the habitat before it.

So, the given option is 'False'. 

Clinkers can be used as aggregate: concrete and

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. Road Materials

  2. Furnitures

  3. Farms

  4. Food

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Correct Option: A

Which ecosystem is very important for man to produce food and fiber?

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. Man subsidized solar power ecosystem

  2. Unsubsidized natural solar powered ecosystem

  3. Naturally subsidized solar powered ecosystem

  4. Fuel power ecosystem

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Correct Option: A

Global warming could cause a rise in the sea level because

biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

  1. Oceans expand as they get warmer

  2. Glaciers and ice-sheets melt

  3. Both of the above

  4. None of these

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Correct Option: B
Explanation:

Melting of mass ice, glaciers around the world have caused increase in the sea level. The global warming is the main reason for the melting of ice, which are also a big reservoir of fresh water.

Some organisms are sensitive to different levels of air pollution and are used as pollution-indicators. Suggest which among the following fits into the category

indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

  1. Fungi

  2. Fresh water algae

  3. Bacteria

  4. Lichens

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Correct Option: D
Explanation:

Lichens are used as the indicators of air pollution. These structures grow on tree bark and rocks. Air pollutants which are in the gaseous forms get dissolved in the rainwater, especially SO$ _2$ (sulphur dioxide) can damage lichens, and check them from growing. In places where lichens are not growing, it indicates that the air is heavily polluted with sulphur dioxide and other pollutants. 

Thus, the correct answer is option D.