BIODIVERSITY-Practice questions

 

    1. Alpha diversity is present in---------

   A) Within community

  B) Between community

 C) Ranges of communities

 D) All of the above 

Correct Answer: A

2. Genetic diversity in agricultural crops is threatened by:                    

A) Introduction of high yielding varieties

B) Intensive use of fertilisers

C) Intensive intercropping

D) Intensive use of biopesticides

  • Correct Answer: A


  • 3.Antilopa cervicapra or Black Buck is:

  • A) Vulnerable

B) Endangered

C) Critically endangered                  

D) Extinct in the wild

Correct Answer: A

4. Which of the following species is endangered?

A) Panthera leo persica                   

B) Python molurus

C) Chelonia mydas                         

D) Siberian crane

Correct Answer: B

5. Exotic species:

A) are often endangered.

B) usually increase biodiversity.

C) often enhance the habitat for native species.

D) usually reduce biodiversity.

  • Correct Answer: D


  • 6. What is genetic diversity?

A) The total genetic information contained within all individuals of species.

B) The total phenotypic information contained within all individuals of a species.

C) The variety of life-forms on Earth.

D) The variety of biotic communities in a region along with abiotic components.

  • Correct Answer: A

7.Which of the following is the most serious threat to biodiversity?

A) Competition from exotic species

B) Commercial harvesting

C) Habitat destruction

D) Over exploitation 

Correct Answer: C

8. National Park associated with Rhinoceros is:

A) Kaziranga   

B) Ranthambore

C) Corbett         

D) Valley of Flowers

 Correct Answer: A

9. In which state "Periyar National park" is present?

A) Karnataka       

B) Maharashtra

C) Madhya Pradesh

D) Kerala

  • Correct Answer: D


  • 10. In India, we find mangoes with different flavours, colours, fibre content, sugar content and even shelf-life. The large variation is on account of:

A) Species diversity

B) Induced mutations

C) Genetic diversity

D) Hybridisation  

Correct Answer: C

11.The proportionate number of individuals of different species in an area is called as:

A) Species diversity

B) Species richness

C) Diversity index                           

D) Species evenness 
Correct Answer: D
12. For conservation of tiger 'a tiger project' is being run in the country. How many tiger reserves are there under this project?

A) 10                                            

B) 14

C) 12                                            

D) More than 16

Correct Answer: D

13. Biosphere reserve project was started in India during:

A) 1984                                        

B) 1985

C) 1986          

D) 1989

Correct Answer: C

14. In a biosphere reserve, the area surrounding the core zone is called:

A) Buffer zone      

B)Transition zone

C) Peripheral zone                          

D) Development zone 

Correct Answer: A

15. Which one of the following statements does not represent biodiversity of a geographical region?

(i) Genetic diversity present is in the dominant species of the region.
(ii) Species endemic to the region.
(iii) Endangered species found in the region.
(iv) The diversity in the organisms living in the region.

A) (i) and (ii)                                  

B) (iii) and (iv)

C) (ii) only          

D (iv) only

Correct Answer: D

16. Which one of the following shows concept o: species-area relationship?

A) The number of species in an area increases with the size of the area.

B) Larger species require larger habitat areas than do smaller species.

C) Most species within any given area are endemic.

D) The larger the area, the greater the extinction rate.

Correct Answer: A

17. The percentage of forest cover recommended by National Forest Policy (1988) is:

A) 33% for plains and 67% for hills

B) 37% for plains and 63% for hills

C) 20% for plains and 70% for hills

D) 23% for plains and 77% for hills

Correct Answer: A

18. Which of the following does not constitute habitat destruction?

A) Fishing       

B) Logging

C) Burning forests   

D) Filling in wetlands

19. Correct Answer: A

19. Why do migratory species present special preservation challenges?   

A) Because they are endemic, they are especially susceptible to habitat destruction.

B) Their conservation may require international cooperation when they require habitats in different countries.

C) They are often prone to population number decline during their long migratory journeys.

D) They reside in biodiversity hot spots that are most susceptible to habitat degradation.

  • Correct Answer: B

20. Biosphere Reserves differ from National Parks and Wildlife Sanctuaries because in the former:

A) human beings are not allowed to enter.

B) people are an integral part of the system.

C) plants are paid greater attention than the  animals.

D) living organisms are brought from all over the world and preserved.


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