Geography 2021

Question 1

What type of climate is associated with the savannah?

Answer 1

Tropical Wet and Dry Climate or Sudan Climate

This climate has alternate wet and dry seasons with considerably less annual rainfall compared to monsoon climates.

Question 2

Which conditions help keep forest development in savannah areas in check?

Answer 2

• Fire
• Grazing herbivores
• Seasonal rainfall

These factors contribute to the ecological balance in savannah regions.

Question 3

What is the primary characteristic of black cotton soil in India?

Answer 3

Formed due to the weathering of fissure volcanic rock

Black soil is known for its moisture retention and high clay content.

Question 4

Which tree is known as the drumstick tree?

Answer 4

Moringa oleifera

Moringa is valued for its medicinal properties and health benefits.

Question 5

What percentage of Earth’s water is found in oceans?

Answer 5

97.25%

The vast majority of Earth’s water is saline and found in oceans.

Question 6

Which of the following statements about groundwater is correct?

Answer 6

Water in rivers and lakes is less than the amount of groundwater

Groundwater constitutes a significant portion of Earth’s freshwater supply.

Question 7

True or False: The palm oil tree is native to Southeast Asia.

Answer 7

False

The palm oil tree is native to West Africa.

Question 8

What is the main agricultural practice discouraged by permaculture farming?

Answer 8

Monocultural practices

Permaculture promotes biodiversity and integrated farming systems.

Question 9

Fill in the blank: The black soil is highly retentive of _______.

Answer 9

moisture

This characteristic helps in agriculture, especially during dry seasons.

Question 10

Which river joins the Indus River directly?

Answer 10

Sutlej

The Sutlej River is one of the tributaries of the Indus River system.

Question 11

What are Didwana, Kuchaman, Sargol, and Khatu known for?

Answer 11

Saline lakes

These are examples of playas located in Rajasthan, India.

Question 12

Which two rivers rise from the Eastern Ghats?

Answer 12

• Nagavali
• Vamsadhara

These rivers originate in the Kalahandi district and flow towards the Bay of Bengal.

Question 13

Which crop is the least water-efficient?

Answer 13

Sugarcane

It requires 1800-2200 mm of water per season, making it the highest among the listed crops.

Question 14

What is the primary use of palm oil in industries?

Answer 14

Raw material for producing lipstick and perfumes

Palm oil is also used for biodiesel production.

Question 15

What is the main reason for the low fertility of black soils in uplands?

Answer 15

Low nutrient content

In contrast, black soils in valleys tend to be more fertile.

Question 16

What is a significant environmental impact of conventional chemical farming?

Answer 16

Increased soil salinity

This phenomenon is not observed in permaculture farming.

Question 17

What is the water requirement for Sugarcane?

Answer 17

1500-2500 mm/total growing period

Sugarcane’s water requirement is among the highest for crops.

Question 18

What type of climate is ideal for Sugarcane cultivation?

Answer 18

Hot and humid climate with an average temperature of 21°C to 27°C

Sugarcane also requires 75-150 cm of rainfall.

Question 19

Which family does Sugarcane belong to?

Answer 19

Poaceae family of true grasses

Sugarcane is the world’s largest crop in terms of production.

Question 20

What soil type is ideal for Sugarcane?

Answer 20

Deep rich loamy soil

The soil should retain moisture and be rich in nitrogen, calcium, and phosphorus.

Question 21

What is the water requirement for Pearl millet?

Answer 21

350 mm/season

Pearl millet is also known for its drought tolerance.

Question 22

What is the estimated water requirement for Sunflower?

Answer 22

672.4 mm/season

This is significantly lower than that of Sugarcane.

Question 23

What is the water requirement for Red gram?

Answer 23

250-400 mm/season

This indicates a relatively low water requirement compared to other crops.

Question 24

In which zone are the western sections of oceans warmer than the eastern sections due to trade winds?

Answer 24

Tropical zone

This is influenced by the Northeast trade winds in the Northern hemisphere.

Question 25

In which zone do westerlies make the eastern sections of oceans warmer than the western sections?

Answer 25

Temperate zone ## Footnote The westerlies carry warm equatorial waters to the eastern coasts of continents.

Question 26

Which biome is characterized by rapid decomposition of leaf litter and a canopy with various climbing plants?

Answer 26

Tropical rain forest ## Footnote This biome features tall trees and is found in regions with year-round high temperatures.

Question 27

What is the average annual rainfall in a tropical rain forest?

Answer 27

50 to 260 inches ## Footnote Rainfall is often more than 100 inches a year.

Question 28

What temperature range is typical in a tropical rain forest?

Answer 28

Rarely higher than 34°C or drops below 20°C ## Footnote Average humidity is between 77 and 88%.

Question 29

Why do many trees in tropical rain forests have smooth, thin bark?

Answer 29

There is no need to protect them from water loss and freezing temperatures ## Footnote This characteristic also helps prevent plant parasites from adhering to the trunks.

Question 30

What happens to the fertility of topsoil in rainforest regions?

Answer 30

It is very poor due to torrential downpours washing out nutrients ## Footnote This leads to rapid soil erosion and impoverishment.

Question 31

What type of vegetation is primarily found in equatorial rainforests?

Answer 31

A multitude of evergreen trees that yield tropical hardwood ## Footnote Examples include mahogany, ebony, and dyewoods.

Question 32

True or False: The tropical rainforest biome has a dense canopy of vegetation that forms three different layers.

Answer 32

True ## Footnote This structure supports a diverse ecosystem.