Environment

Biodiversity, climate change, pollution, protected areas. Filter by topic or year.

3 questions

2018 · Question 60 · Biodiversity
The term “sixth mass extinction/sixth extinction” is often mentioned in the news in the context of the discussion of
Choose your answer(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 which 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.
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2018 · Question 86 · Biodiversity
Why is a plant called Prosopis juliflora often mentioned in news ?
Choose your answer(a)Its extract is widely used in cosmetics.(b)It tends to reduce the biodiversity in the area in which it grows.(c)Its extract is used in the synthesis of pesticides.(d)None of the above
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2018 · Question 87 · Biodiversity
Consider the following statements : 1. Most of the world’s coral reefs are in tropical waters. 2. More than one-third of the world’s coral reefs are located in the territories of Australia, Indonesia and Philippines. 3. Coral reefs host far more number of animal phyla than those hosted by tropical rainforests. Which of the statements given above is/are correct ?
Choose your answer(a)1 and 2 only(b)3 only(c)1 and 3 only(d)1, 2 and 3
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)

The term “sixth mass extinction/sixth extinction” is often mentioned in the news in the context of the discussion of

Why is a plant called Prosopis juliflora often mentioned in news ?