Which of the following statements with regard to the arrival of Amur Falcons at Doyang Lake in Nagaland each year from Mongolia is/are correct ? 1. It showcases how sustained local conservation efforts can contribute to the arrival and protection of international migratory birds. 2. It reflects the global success of advanced tracking technologies that guide migratory birds back to their stopover sites. 3. It confirms that Amur Falcons have adapted to permanent residency in India due to favourable habitat changes. Select the answer using the code given below :
- A.1 only
- B.1 and 2
- C.2 and 3
- D.3 only
Correct answer
Explanation
The correct answer is A, 1 only. The yearly return of the falcons to Doyang is a story of community conservation, not of technology or of the birds settling in India.
Amur Falcons breed in south-east Siberia, northern China and Mongolia. Every October and November lakhs of them halt around the Doyang reservoir in Wokha district of Nagaland to feed on insects before crossing the Arabian Sea to southern Africa. Until about 2012 thousands were trapped and eaten here; then villages such as Pangti banned the hunting, and the area is now called the Falcon Capital of the World.
Statement 2 is wrong: scientists fit satellite tags to study the route, but tags only record movement, they do not guide the birds.
Statement 3 is wrong: the falcon is a passage migrant that stays only a few weeks and then flies on to Africa.
So B, C and D, which include statement 2 or 3, are wrong.
Exam tip: Amur Falcon route = Mongolia/Siberia → Nagaland (Pangti, Doyang) → southern Africa.
Practice Questions
View allConsider the following statements :
I. Carbon dioxide (CO2) emissions in India are less than 0.5 t CO2/capita.
II. In terms of CO2 emissions from fuel combustion, India ranks second in Asia-Pacific region.
III. Electricity and heat producers are the largest sources of CO2 emissions in India.
Which of the statements given above is/are correct?
- A.I and III only
- B.II only
- C.II and III only
- D.I, II and III
Show answer
India is the second-largest emitter of fuel-combustion CO2 in the Asia-Pacific after China, and power and heat generation is its biggest source, but its per capita emissions are well above 0.5 tonne.
Read the full explanation →The term 'Domestic Content Requirement' is sometimes seen in the news with reference to
- A.Developing solar power production in our country
- B.Granting licences to foreign T.V. channels in our country
- C.Exporting our food products to other countries
- D.Permitting foreign educational institutions to set up their campuses in our country
Show answer
Domestic Content Requirement (DCR) is the rule that certain solar projects must use solar cells and modules made in India.
Read the full explanation →In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosol into stratosphere?
- A.Creating the artificial rains in some regions
- B.Reducing the frequency and intensity of tropical cyclones
- C.Reducing the adverse effects of solar wind on the Earth
- D.Reducing the global warming
Show answer
Both ideas are geoengineering proposals meant to cool the planet by changing how much heat enters or leaves the Earth.
Read the full explanation →Which of the following have species that can establish symbiotic relationship with other organisms?
1. Cnidarians
2. Fungi
3. Protozoa
Select the correct answer using the code given below.
- A.1 and 2 only
- B.2 and 3 only
- C.1 and 3 only
- D.1, 2 and 3
Show answer
Cnidarians, fungi and protozoa all include species that live in close, mutually useful partnerships with other organisms. Symbiosis means two different species living closely together, often to the benefit of both.
Read the full explanation →Regarding Peacock tarantula (Gooty tarantula), consider the following statements :
I. It is an omnivorous crustacean.
II. Its natural habitat in India is only limited to some forest areas.
III. In its natural habitat, it is an arboreal species.
Which of the statements given above is/are correct?
- A.I only
- B.I and II
- C.II only
- D.II and III
Show answer
The Gooty tarantula is a tree-dwelling spider found only in a few forest patches of India; it is not a crustacean.
Read the full explanation →