Biodiversity and Conservation · Question 25

Frugivorous birds are found in large numbers in tropical forests mainly because of :

1. Temperature conducive for their breeding
2. Lack of niche specialisation
3. Higher annual rainfall
4. Availability of fruits throughout the year

Western Ghats have a large number of plants and animal species that are not found anywhere else. Which of the following term is used to notify such species?

1. Vulnerable species
2. Threatened species
3. Keystone species
4. Endemic species

According to Robert May, the global species diversity is about

1. 7 million
2. 20 million
3. 1.5 million
4. 50 million

Which of the following regions of the globe exhibits highest species diversity?

1. Amazon forests
2. Madagascar
3. Western Ghats of India
4. Himalayas

The Earth summit held in Rio de Janeiro in 1992 was called :

1. to assess threat posed to native species by invasive weed species
2. for immediate steps to discontinue use of CFCs that were damaging the ozone layer
3. to reduce CO2 emissions and global warming
4. for conservation of biodiversity and sustainable utilization of its benefits

Which of the following is the most important cause for animals and plants being driven to extinction?

1. Economic exploitation
2. Alien species invasion
3. Habitat loss and fragmentation
4. Drought and floods

Which one of the following is not a method of in situ conservation of biodiversity?

1. Botanical Garden
2. Sacred Grove
3. Biosphere Reserve
4. Wildlife Sanctuary

All of the following are included in ‘ex-situ conservation’ except

1. wildlife safari parks
2. sacred groves
3. botanical gardens
4. seed banks

Which one of the following is related to Ex-situ conservation of threatened animals and plants ?

1. Biodiversity hot spots
2. Himalayan region
3. Amazon rainforest
4. Wildlife Safari Parks

Alexander von Humboldt described for the first time :

1. Laws of limiting factor
2. Population Growth equation
3. Species area relationships
4. Ecological Biodiversity