Bevae 181 Answer Key June 2022 Updated Questions 13-24
Part-2 Ques 13-24
Q. 13. Seed bank is the example of:
(1) ex-situ conservation
(2) in-situ conservation
(3) captive breeding
(4) in-vitro technique
Ans. (1) ex-situ conservation
Q. 14. A wide diversity in species composition indicates that ecosystem is:
(1) likely to be more stable in the long-term
(2) very new in existence
(3) very unstable and species may collapse soon
(4) unstable but has large number of species
Ans. (1) likely to be more stable in the long-term
Q. 15. The fostering technique has been used to conserve :
(1) Elephant
(2) Cheetah
(3) Whooping crane
(4) Angus cow
Ans. (3) Whooping crane
Q. 16. The unattached organisms in an aquatic ecosystem which live at the interface of air-water are known as:
(1) neuston
(2) nekton
(3) plankton
(4) benthos
Ans. (1) neuston
Q. 17. Brackish water ecosystems include:
(1) stagnant inland lakes
(2) impoundments
(3) lotic habitat
(4) estuaries and mangroves
Ans. (4) estuaries and mangroves
Q. 18. The average salinity in sea water is about:
(1) 2.5%
(2) 3.5%
(3) 4.5%
(4) 5.8%
Ans. (2) 3.5%
Q. 19. Which of the following is open or heterotrophic system ?
(1) Pond (3) River
(2) Bog (4) Swamp
Ans. (3) River
Q. 20. Approximately 50% of the total world species are present in :
(1) tropical rain forests
(2) temperate rain forests
(3) temperate deciduous forests
(4) coral reefs
Ans. (1) tropical rain forests
Also read: Bevae 181 Answer Key June 2022 (Questions 1-12)
Q. 21. Genetic diversity is related to:
(1) types of species
(2) types of community
(3) diversity in number and type of genes
(4) distribution and evolution of species
Ans. (4) distribution and evolution of species
Q. 22. Biodiversity hotspots are regions of high
(1) productivity
(2) endemism
(3) density of flora and fauna
(4) concentration of alien species
Ans. (2) endemism
Q. 23. Which one of the following statements about biodiversity is not true ?
(1) The most visible component of biodiversity is species diversity.
(2) Islands and coastal stretches of India show high number of endemic species.
(3) Vertebrates are the most abundant life forms on earth.
(4) Biodiversity hotspots are under constant threat.
Ans. (3) Vertebrates are the most abundant life forms on earth.
Q. 24. Ravine is formed due to:
(1) acidic soil (3) soil erosion
(2) basic soil (4) soil salinity
Ans. (3) soil erosion
Also read: Bevae 181 Answer Key April 2022
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