Consider the following statements:Hardest timber is obtained from the ...
Explanation:
The hardest timber is obtained from the wood grown in moderately dry climatic regions and open areas. Let's understand why these statements are correct.
1. Moderately dry climatic regions:
In moderately dry climatic regions, trees have to adapt to survive in conditions of low moisture and limited water availability. As a result, the wood produced by these trees tends to be denser and harder. This makes it more resistant to wear, decay, and damage. Therefore, timber obtained from trees grown in moderately dry climatic regions is generally harder.
3. Open areas:
Trees grown in open areas are exposed to harsh environmental conditions such as strong winds, abundant sunlight, and fluctuating temperatures. In order to withstand these conditions, the trees develop stronger and denser wood. This dense wood is harder and more resistant to external forces. Thus, timber obtained from trees grown in open areas is also harder.
Therefore, both statements 1 and 3 are correct.
2. Himalayan slopes:
The statement that the hardest timber is obtained from the wood grown on the Himalayan slopes is incorrect. While the Himalayan slopes are known for their diverse range of trees, the hardness of timber obtained from these trees cannot be generalized. The hardness of timber depends on various factors such as tree species, growth conditions, and tree age. It is possible to find hard timber from trees grown on the Himalayan slopes, but it is not a definitive characteristic.
4. Thin jungles:
Similarly, the statement that the hardest timber is obtained from thin jungles is incorrect. The density and hardness of timber obtained from trees in jungles depend on various factors such as tree species, competition for resources, and growth conditions. The thickness or density of the jungle does not directly determine the hardness of the timber.
To summarize, the correct statements are 1 and 3. The hardest timber is obtained from wood grown in moderately dry climatic regions and open areas.