Question

Diffuse porous woods are characteristic of plants

• A. Alpine region
• B. Cold winter regions
• C. Temperate climate
• D. Tropics

Answer 1

The correct option is D Tropics

Hardwoods are of two types, ring-porous and diffuse-porous trees. In ring-porous trees, the vessels at the start of the growing season are much larger than vessels at the end of the season. In diffuse-porous trees, vessels are of the same diameter throughout the season. Larger vessel size permits more rapid water conduction. Due to the absence of visible difference between the early and late wood of tropical angiosperms, caused by more or less uniform climate, pores are uniformly distributed throughout the ring. Most ring-porous trees are found in the north temperate areas of the world. Most diffuse-porous trees are found in the tropical regions.

Thus, the correct answer is option D.