Landforms and Life — NCERT Solutions

Concept: Recall definitions and facts about landforms from the chapter.

(a) The Himalayas are young mountains with rounded tops.
$$\textbf{False}$$
Explanation: The Himalayas are indeed young fold mountains, but they have high, rugged, and pointed/jagged peaks (e.g., Mount Everest). Rounded tops are a feature of old mountains like the Aravalli or the hills of Chhota Nagpur.

(b) Plateaus usually rise sharply at least on one side.
$$\textbf{True}$$
Explanation: A plateau is a flat-topped elevated landform that rises steeply (sharply) on at least one side from the surrounding land.

(c) Mountains and hills belong to the same type of landform.
$$\textbf{True}$$
Explanation: Both mountains and hills are elevated landforms. Hills are generally lower in height than mountains, but they belong to the same broad category of elevated landforms.

(d) Mountains, plateaus and rivers in India have the same types of flora and fauna.
$$\textbf{False}$$
Explanation: Different landforms have different climates, soils, and altitudes, which support different types of plants (flora) and animals (fauna). For example, snow leopards live in the Himalayas, while elephants are found in forests of the plains and plateaus.

(e) Ganga is a tributary to the Yamuna.
$$\textbf{False}$$
Explanation: It is the Yamuna that is a tributary of the Ganga, not the other way around. The Yamuna meets the Ganga at Prayagraj.

(f) Deserts have unique flora and fauna.
$$\textbf{True}$$
Explanation: Deserts have extreme conditions (very little water, high or low temperatures), so the plants and animals found there are specially adapted — e.g., cacti, camels, and certain reptiles are unique to desert environments.

(g) Melting snow feeds rivers.
$$\textbf{True}$$
Explanation: Many rivers, especially Himalayan rivers like the Ganga and Indus, are fed by glaciers and melting snow from the mountains. This is why they flow throughout the year.

(h) Sediments from rivers deposited in the plains makes the land fertile.
$$\textbf{True}$$
Explanation: Rivers carry fine particles of soil called sediments and deposit them on the plains, forming alluvial soil, which is very fertile and ideal for agriculture.

(i) All deserts are hot.
$$\textbf{False}$$
Explanation: Not all deserts are hot. There are cold deserts as well — for example, Ladakh in India is a cold desert. Antarctica is also considered the world's largest cold desert.

Concept: Match each term in the left column with its most appropriate pair in the right column based on facts from the chapter.

Correct Matching:

Justifications:

• Mount Everest → roof of the world: Mount Everest is the highest peak in the world and is called the 'roof of the world.'
• Rafting → river: White-water rafting is an adventure sport done on fast-flowing rivers.
• Camels → desert: Camels are the most iconic animals of the desert, well-adapted to survive with little water.
• Plateau → Ganga: (Note: Based on chapter context, the Gangetic plain is associated with the Ganga river; plateau is paired with Ganga as the Ganga originates from the mountains and flows through plains formed at the edge of plateaus. However, a more direct reading pairs Gangetic plains → Ganga and plateau → rice fields is less likely. The most logical pairing from the given options is:) Plateau → Ganga is re-examined — the straightforward pairs are: Gangetic plains → rice fields (plains are famous for rice cultivation) and plateau → Ganga may refer to the Deccan Plateau through which the Ganga's tributaries flow. Accepting the set as given: Plateau is paired with the remaining option.
• Gangetic plains → rice fields: The fertile Gangetic plains are famous for growing rice.
• Waterway → tributary: Waterways include rivers and their tributaries used for transport.
• Mount Kilimanjaro → Africa: Mount Kilimanjaro is the highest mountain in Africa.
• Yamuna → climbing: (In context of the chapter's adventure activities, climbing is associated with mountains; Yamuna as a tributary is matched with 'waterway/tributary'. Re-reading the pairs:) Yamuna → tributary (Yamuna is a tributary of the Ganga) and waterway → Ganga (the Ganga is a major waterway of India).

Final Corrected Matching:

*(Note: 'Yamuna → climbing' may refer to trekking/climbing activities in the Yamuna's origin area in the Himalayas, and 'waterway → tributary' refers to rivers as waterways. Students should follow their textbook's answer key if it differs.)