Important Questions: Human Environment Interactions The Tropical And The Subtropical Region - UPSC MCQ

Cash crops are grown for direct sale in the market, rather than for family consumption or to feed livestock. Coffee, cocoa, tea, sugarcane, cotton, and spices are some examples of cash crops.

The Taj Mahal is an ivory-white marble mausoleum on the southern bank of the river Yamuna in the Indian city of Agra.

The correct option is B.
The Great Stupa at Sanchi, Eastern Gateway. Coordinates:23.479223°N 77.739683°ESanchi Stupa is a Buddhist complex, famous for its Great Stupa, on a hilltop at Sanchi Town in Raisen District of the State of Madhya Pradesh, India. It is located 46 kilometres (29 mi) north-east of Bhopal, capital of Madhya Pradesh.

Tributaries of the River Ganga
The River Ganga, also known as the Ganges, is one of the major rivers in India. It is fed by numerous tributaries that contribute to its vast water resources. However, one of the options given, Tapi, is not a tributary of the River Ganga. Let's take a closer look at the other options:
Son:
- Son is the largest tributary of the River Ganga.
- It originates in the Amarkantak hills in Madhya Pradesh and flows through Bihar before joining the Ganga in the Patna district.
Ghaghra:
- Ghaghra, also known as the Karnali River, is another important tributary of the Ganga.
- It originates in the Himalayas in Nepal and passes through Uttar Pradesh before joining the Ganga near Patna.
Chambal:
- Chambal is a tributary of the Yamuna River, which is another major tributary of the Ganga.
- It originates in Madhya Pradesh and flows through Rajasthan and Uttar Pradesh before joining the Yamuna.
Tapi:
- Tapi, also known as the Tapti River, is not a tributary of the River Ganga.
- It is a river in western India that originates in the Satpura Range in Madhya Pradesh and flows through Maharashtra and Gujarat before emptying into the Arabian Sea.
To summarize, the tributaries of the River Ganga are Son, Ghaghra, and Chambal. Tapi is not a tributary of the River Ganga.

The Ganga basin is a part of the Ganges-Brahmaputra basin draining 1,086,000 square kilometres in Tibet, Nepal, India and Bangladesh.

The correct answer is A as A piranha or piraña, a member of family Serrasalmidae, or a member of the subfamily Serrasalminae within the tetra family.

Answer:
The place where a river flows into another body of water is called the river's mouth. This is where the river meets a larger body of water such as a lake, sea, or ocean. The river's mouth can vary in size and shape depending on factors such as the volume of water flowing through the river and the geology of the area. Here are some key points to further explain:
Definition:
- The river's mouth is the point where a river empties into another body of water.
- It marks the end of the river's journey and the beginning of its interaction with a larger body of water.
Characteristics of a River's Mouth:
- The river's mouth can take different forms depending on the specific conditions of the area.
- It can be a wide and open area, or it can be narrow and more confined.
- The shape and size of the river's mouth can change over time due to erosion and sediment deposition.
- Deltas, which are formed by the deposition of sediment carried by the river, are one common type of river's mouth.
Importance of the River's Mouth:
- The river's mouth is often a site of high ecological importance and biodiversity.
- It provides a transition zone between freshwater and saltwater environments, creating a unique habitat for various species of plants and animals.
- The river's mouth can also be important for human activities such as navigation, fishing, and recreation.
In conclusion, the place where a river flows into another body of water is known as the river's mouth. It is a significant geographical feature that marks the end of the river's journey and the beginning of its interaction with a larger body of water.

Sundarban forests are located in Ganga-Brahmaputra delta of West Bengal and Bangladesh. Mangrove forests of Sundarbans are largest mangrove forests of the world. Mangrove forests comprise of small shrubs or trees that grow in coastal saline or brackish waters. These shrubs or trees can withstand high salinity conditions.

Main Occupation in Ganga-Brahmaputra Basin:

• Agriculture: Agriculture is the main occupation of the people living in the areas of the Ganga-Brahmaputra basin where flat land is available for cultivating crops. The fertile plains of the basin provide suitable conditions for growing various crops.


• Mining: Mining is not the main occupation in the Ganga-Brahmaputra basin. The region is not known for significant mining activities.


• Industry work: While there may be some industries in the area, they are not the main occupation for the majority of the population. The focus is primarily on agriculture.


• Service: Service-oriented jobs, such as in the hospitality or retail sectors, may exist in the basin, but they are not the primary occupation.

Therefore, the correct answer is C. Agriculture.

Note: The Ganga-Brahmaputra basin is a highly fertile region known for its agricultural productivity. The flat plains and the presence of major rivers provide an ideal environment for farming activities, making agriculture the main occupation in the area.

Monkey, sloth and ant-eating tapirs animals are found in the Amazon basin.
Explanation:
The Amazon basin is a vast region in South America that is home to the Amazon rainforest, which is the largest tropical rainforest in the world. This region is known for its incredible biodiversity and is home to numerous species of plants and animals.
The monkey, sloth, and ant-eating tapir are all examples of animals that are found in the Amazon basin. Here is a detailed explanation of each animal:
- Monkey: Monkeys are mammals that belong to the primate order. There are many different species of monkeys found in the Amazon rainforest, including spider monkeys, howler monkeys, and squirrel monkeys. These animals are known for their agility and adaptability, and they play an important role in the ecosystem as seed dispersers.
- Sloth: Sloths are slow-moving mammals that are well adapted to life in the trees. They have long arms and claws that allow them to hang upside down from branches, and they mainly feed on leaves. There are two main species of sloths found in the Amazon rainforest, the two-toed sloth and the three-toed sloth.
- Ant-eating Tapir: The ant-eating tapir, also known as the South American tapir, is a large herbivorous mammal that is found in the Amazon rainforest. It has a long snout and a flexible proboscis, which it uses to grab leaves and fruits. Despite its name, the ant-eating tapir also feeds on a variety of other plant materials.
In conclusion, the monkey, sloth, and ant-eating tapir are all examples of animals that are found in the Amazon basin. The Amazon rainforest provides a rich and diverse habitat for these and many other species, making it a truly remarkable ecosystem.

The correct answer is B as Manas wildlife sanctuary is in Assam covering 5 districts: Kokrajhar,Chirang,Baksa,Udalguri and Darrang.It spreads across an area of 950 km2

- The Ganga Plain is characterized by its fertile land and diverse plant life.
- Mangrove forests, found in the Sundarbans region of the Ganga delta, are the correct type of forests in this area.

Haldia port or Calcutta Port is a major seaport has been built at the meeting place of the Haldi River and Hooghly river in the state of West Bengal.

The vegetation cover of the area varies according to the type of landforms. In the Ganga and Brahmaputra plain, tropical deciduous trees such as teak, sal, and peepal grow. However, mahogany is not typically found in this region as a native species, making it the exception.

Pobitora is popularly known as 'miniature Kaziranga' for its highest density of one horned rhino in Assam. It is situated in the flood plains of River Brahmaputra in the district of Morigaon and 45 kms from Guwahati.