21.

The transition zone between two ecosystems is called :

• Biotope 

• Ecotone

• Biome

• Habitat

Who wrote the book 'La Geographie Humaine' ?

• P.E. James

• Jeans Brunhes

• R.J. Johnston

• E. Jones

Who amongst the following defined geography as a chorological science ?

• Richthofen

• Hettner

• Ptolemy

• Peter Haggett

"The dominant idea in all geographical progress is that of terrestrial unity." This statement is attributed to :

• Richard Hartshorne

• Vidal de la Blache

• Jean Brunhes

• Friedrich Ratzel

Who was the first promoter of geographical knowledge from Germany ?

• Ferdinand Von Richthofen

• Carl Ritter

• Carl Andree

• Oscar Peschel

Stop and go determinism was postulated by :

• Humboldt

• Jean Brunhes

• Griffith Taylor

• Ratzel

• a-4 , b-3 , c-2 , d-1

• a-3 , b-2 , c-1 , d-4

• a-2 , b-4 , c-3 , d-1

• a-1 , b-4 , c-3 , d-2

• a-1 , b-3 , c-2 , d-4

• a-4 , b-2 , c-1 , d-3

• a-3 , b-4 , c-2 , d-1

• a-2 , b-3 , c-4 , d-1

ASSERTION (A) : Coral reefs to be most extensively developed along the eastern edges of continents.

REASON (R) : Sea water is warmer than 20°C.

• Both (A) and (R) are true and (R) is the correct explanation of (A). 

• Both (A) and (R) are true but (R) is not the correct explanation of (A).

• (A) is true , but (R) is false.

• (A) is false , but (R) is true.

How many stages of population growth are involved in demographic transition ?

• 3

• 4 

• 5

• 6