Given below are two statements, one is labelled as Assertion (A) and other as Reason (R) :
Assertion (A) : Unlike temperate forests, the tropical rain forests, if cleared, can yield productive farmland that can support intensive agriculture for several years even without chemical fertilizers.
Reason (R) : The primary productivity of the tropical rain forest is very high compared to that of temperate forests.
Code :
(A) and (R) are true individually true, and (R)is the correct explanation of
(A)
Correct Answer:
(D)
is false, but (R) is true.
Instead of the tropical rain forests, if temperate forests are cleared, they can yield productive farmland. Land for agriculture is being Fastly developed in mid-latitude area by clearing these forests. So, Assertion (A) is wrong. Primary productivity of tropical rainforest (2200 gram biomass per square meter/year) is greater than all other types of forests. It is greater than temperate forests (1320 gram biomass/square meter/year) also. Thus reason (R) is true.
Ques:
12
. If tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because
Correct Answer:
(A)
The soil of rain forest is deficient in nutrients
If tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. The main reason is the deficiency of nutrients in the soil of rain forest.
Ques:
13
Match List - I with List - II and using the given codes select the correct answer:
List - I List - II
(Grassland) (Country / Continent)
A. Steppes 1. United States of America
B. Prairies 2. South Africa
C. Welds 3. Russia
D. Downs 4. Australia
Codes:
A B C D
Correct Answer:
(C)
3 1 2 4
The correct match is as follows:
Grassland Country / Continent
Steppes Russia
Prairies United States of America
Welds South Africa
Downs Australia
Ques:
14
Match List-I with List-II and select the correct answer from the codes given below:
List -I List-II
(Grassland) (Continent)
Llanos 1. North America
Steppe 2. Africa
Prairies 3. Europe
Veld 4. South America
Code:
A B C D
Correct Answer:
(A)
4 3 1 2
The correctly matched grasslands with their continents are as follows:
Llanos - South America
Steppe - Europe
Prairies - North America
Veld - Africa
Ques:
15
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(Grasslands) (Countries)
Pampas 1. Australia
Pustaz 2. South Africa
Veld 3. Argentina
Downs 4. Hungary
Code:
A B C D
Correct Answer:
(A)
3 4 2 1
(Grasslands) (Countries)
Pampas - Argentina
Pustaz - Hungary
Veld - South Africa
Downs - Australia
Ques:
16
Which of the following pair is correct?
Countries Grass fields
Correct Answer:
(B)
Argentina - Pampas
The correct match of grass fields with respective countries is as follows: Campos - Brazilian Highland, Pampas - Argentina, Uruguay and Brazil, Savanna - Eastern Africa (Kenya. Tanzania etc), Steppes - Western Russia and Central Asia Therefore, option (b) is correctly matched.
Ques:
17
The Savannas are most widespread in –
Correct Answer:
(A)
Africa
Savanna is a rolling Grassland scattered with shrubs and isolated trees which can be found between a tropical rainforest and desert biome. The savannas are mainly spread over East Africa. Savannas are also found in Brazil, Colombia and Venezuela and southern parts of India. Therefore, the correct answer is option (a).
Ques:
18
Which one of the following natural regions is known as 'Land of Big Games'?
Correct Answer:
(D)
Tropical Savanna Region
Land of Big Games is known as the Tropical Savanna region, as thousands of animals are trapped or killed each year by people from all over the world. There are two main groups of animals in the savanna, the grass-eating herbivorous animals and the flesh-eating carnivorous animals. The herbivorous include the zebra, antelope, Giraffe, deer, gazelle, elephant etc. and carnivorous animals include the lion, tiger, jackal, jaguar, leopard, hyena etc. species of reptiles and mammals includes giant Lizards, crocodiles, alligators that live together with larger rhinoceros and hippopotamus in rivers and marshy lakes.
Ques:
19
The wide treeless grassy plain in South America are called
Correct Answer:
(B)
Pampas
Pampas the grasslands of South America. These plains are very fertile. These grass fields spread from the Atlantic Ocean to Andes Mountains up to Argentina and Uruguay.
Ques:
20
What is the name of mid-latitude grassland in South America?
Correct Answer:
(B)
Pampas
Mid-latitudes or temperate belt grasslands of South America is known as Pampas. It is spread over Argentina, Uruguay and southern parts of Brazil. Other mid-latitude grasslands are Prairie (North America), downs (Australia), etc.