Top 10,000+ TNPSC General Knowledge Questions and Answers - 2

Question: 6

The cycling of elements in an ecosystem is called

(A) Biogeochemical cycles

(B) Geochemical cycles

(C) Geological cycles

(D) Chemical cycles

Question: 7

Which of the following is the most important factor responsible for decline of biodiversity?

(A) Controlling pests

(B) Controlling predators

(C) Destruction of habitat

(D) Genetic assimilation

Question: 8

Which one of the following is not included under the basic component of the environment?

(A) Biotic component

(B) Abiotic component

(C) Spatial component

(D) Energy component

Question: 9

In a food chain, the stable energy utilized by plants is only

(A) 1%

(B) 0.1%

(C) 1.0%

(D) 10%

Question: 10

Biosphere reserves are areas to preserve

(A) Atmospheric balance

(B) Agricultural produce

(C) Grassland

(D) Genetic diversity