Question

Diffuse-porous Woods are characteristics of plant growing in
A) Alpine regions
B) Cold winter regions
C) Temperate regions
D) Tropical regions
E) All of the above

Answer 1

Hint: It is the region near the equator present between the tropic of Cancer and tropic of Capricorn and gets direct exposure to sunlight. So, this region is warm throughout the year. Variation in season is less.

Complete step by step answer:
Hardwood - It is a deciduous tree characterized by broad leaves and generally produces fruit or nuts and becomes inactive during the winter season. These are found in Tropical evergreen forests (tropical regions) .
- This wood is from the dicot trees. These trees are generally produced by Angiosperm trees and mainly reproduce by flowers.
- These have a complex structure. So, growth is slow.
Example - Oak, show annual growth rings.

Additional information: In accordance with the arrangement of their pores, which is also called porosity. Hardwood divided into three categories-
(1) Ring porous
(2) diffuse- porous
(3) semi ring porous
Diffuse porous - The second category that is diffuse- porous is characteristic of wood found in tropical regions. These generally occur when wide vessels (pores) are evenly scattered all over the wood. Their growth rings are still observable across other cell types namely parenchyma bands or due to change in wood fiber's color, but the biggest feature(pores) will be scattered all over the wood. So, the woods are called diffuse- porous Woods.
Example - Afzelia
Ring porous - is mainly found in the temperate zone with larger pores forms a band or ring-like structure throughout the wood.
Semi ring - porous - woods have pores that are evenly spaced and have broken bands or rings.
So, the correct answer is, "Tropical regions".

Note:
- In diffuse porous- wood, vessels are less or more in diameter and distributed throughout the wood. Their development is slow.
- Vessels are generally small in length when compared to ring- porous Woods.
- The rate of transportation of water is also poor in diffuse-porous woods.