Biodiversity and Conservation Class 11 NCERT Solutions. We covered all the Biodiversity and Conservation Class 11 NCERT Solutions in this post for free so that you can practice well for the exam.
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Biodiversity and Conservation Class 11 NCERT Solutions for Students
The term “sixth mass extinction/sixth extinction” is often mentioned in the news in the context of the discussion of:
(a) Widespread monoculture practices in agriculture and large-scale commercial farming with indiscriminate use of chemicals in many parts of the world that may result in the loss of good native ecosystems.
(b) Fears of a possible collision of a meteorite with the Earth in the near future in the manner it happened 65 million years ago that caused the mass extinction of many species including those of dinosaurs.
(c) Large-scale cultivation of genetically modified crops in many parts of the world and promoting their cultivation in other parts of the world may cause the disappearance of good native crop plants and the loss of food biodiversity.
(d) Mankind’s over-exploitation/misuse of natural resources, fragmentation/loss of natural habitats, destruction of ecosystems, pollution, and global climate change.
Option d – Mankind’s over-exploitation/misuse of natural resources, fragmentation/loss of natural habitats, destruction of ecosystems, pollution, and global climate change
Which among the following is the secondary pollutant?
(a) Smog.
(b) Carbon dioxide.
(c) Carbon monoxide.
(d) Fly ash.
Option a – Smog
When was India’s first National Action Plan on Climate Change released?
(a) 2000.
(b) 2008.
(c) 2012.
(d) 2015.
Option b – 2008
Which is the most stable ecosystem?
(a) Marine (ocean).
(b) Forest.
(c) Mountain.
(d) Desert.
Option a – Marine (ocean)
Incinerators are used for which of the following?
(a) Burning wastes.
(b) Putting wastes into them.
(c) For cutting green trees.
(d) For making fertilizers.
Option a – Burning wastes
Which painkiller given to cattle is responsible for the near extinction of vultures in India?
(a) Ibuprofen.
(b) Acetaminophen.
(c) Aspirin.
(d) Diclofenac.
Option d – Diclofenac
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