Biodiversity UPSC Questions

What are the three levels at which biodiversity exists?

Consider the following statements :
1. Biodiversity as normally greater in the lower latitudes as compared to the higher latitudes.
2. Along the mountain gradients, biodiversity is normally greater in the lower altitudes as compared to the higher altitudes.
Which of the statements given above is/ are correct?
UPSC - 2011

Three of the following criteria have contributed to the recognition of Western Ghats -Sri Lanka and Indo-Burma regions as hotspots of biodiversity:
1. Species richness
2. Vegetation density
3. Endemism
4. Ethnobotanical importance
5. Threat perception 6. Adaptation of flora and fauna to warm and humid conditions
Which three of the above are correct criteria in the context?
UPSC - 2011

Which of the following best defines genetic diversity?

What are the reasons for the people's resistance to the introduction of But brinjal in India?
1. But brinjal has been created by inserting a gene from a soil fungus into its genome.
2. The seeds of But brinjal are terminator seeds and therefore, the farmers have to buy the seeds before every seasons from the seed companies.
3. There is an apprehension that the consumption of Bt brinjal may have adverse impact on health.
4. There is some concern that the introduction of Bt brinjal may have adverse effect on the biodiversity.
Select the correct answer using the codes given below:
UPSC - 2012

Which of the following can be threats to the biodiversity of a geographical area?
1. Global warming
2. Fragmentation of habits
3. Invasion of alien species
4. Promotion of vegetarianism
Select the correct answer using the codes given below:
UPSC - 2012