Which of the statements given below is not true
about formation of Annual Rings in trees?
Explanation:
Annual rings are formed due to seasonal variation in wood, with spring wood (light, spacious vessels) and autumn wood (darker, dense vessels) produced within one year. The cambium’s differential activity creates these light and dark bands. In temperate regions, distinct rings are visible because seasons differ markedly; in tropical regions, rings may be faint or absent due to less pronounced seasonality. Statement 3 says rings are not prominent in temperate region, which is not true. Therefore option 3 is the incorrect statement.
? Did You Know?
In NCERT books, annual rings are used to estimate the age of a tree and study past climatic conditions.
? NCERT Memory Line:
Annual rings result from cambial activity varying with seasons; they are prominent in temperate regions where seasons differ.
Consider the following statements:
(A) Coenzyme or metal ion that is tightly bound to
enzyme protein is called prosthetic group.
(B) A complete catalytic active enzyme with its
bound prosthetic group is called apoenzyme.
Select the correct option.
