Question

Which one of the following statements is NOT correct?

• A. In the Northern Hemisphere many mammals hibernate in winter
• B. The vegetation in Tundra is predominantly herbaceous
• C. The dominant trees in the Northern Hemisphere are deciduous
• D. Average temperature in Tundra is above \(30^\circ C\)

Hint:

Tundra biome is permanently cold and often associated with permafrost, mosses, lichens, and very low average temperatures.

Answer 1

The Correct Option is D

Step 1: Understand the Tundra biome.
Tundra is one of the coldest biomes on Earth and is mainly found in Arctic and high mountain regions. It is characterized by extremely low temperatures, frozen subsoil (permafrost), and a very short growing season.

Step 2: Analyze statement (A).
Many mammals living in the Northern Hemisphere, such as bears and ground squirrels, hibernate during winter to survive harsh cold conditions and food scarcity. Therefore, statement (A) is correct.

Step 3: Analyze statement (B).
Tundra vegetation mainly consists of grasses, mosses, lichens, and small herbaceous plants because the severe cold and frozen soil prevent the growth of large trees. Hence, statement (B) is correct.

Step 4: Analyze statement (C).
Large regions of the Northern Hemisphere contain temperate deciduous forests where deciduous trees such as oak, maple, and birch are common. Therefore, statement (C) is considered correct in the given context.

Step 5: Analyze statement (D).
The average temperature in the Tundra biome is extremely low and usually remains below \(0^\circ C\) for most of the year. Even during summer, temperatures are generally much lower than \(30^\circ C\).

Step 6: Identify the incorrect statement.
Since Tundra is a cold biome, the statement claiming that its average temperature is above \(30^\circ C\) is scientifically incorrect.

Step 7: Final conclusion.
Therefore, the statement that is NOT correct is
\[ \boxed{\text{Average temperature in Tundra is above }30^\circ C} \]
Hence, the correct answer is option (D).