Question

Consider the following statements: 

1. Annual rings are distinct in plants which grow in temperate region. 

2. One growing ring of plant consists of only spring wood.

Which of the statements given above is/are correct about annual ring? 

(a) 1 only 

(b) 2 only 

(c) 1 and 2 

(d) Neither 1 nor 2

Answer 1

The correct option is;(a) 1 only

Explanation:

Temperate climatic zones see spring and autumn distinctly in a year. Spring brings plenty of water that the trees can take up to form larger xylem vessels and a broader and soft 'springwood'. In late summer or in winters, the climate becomes dry severing enough water supply, thus, the vascular cambium cuts off smaller xylem vessels forming a narrow and darker dense 'autumn woods'. Spring and autumn woods together form a growth ring or annual growth ring. Counting each growth ring as the age of the tree.