Question

Which of the statements given below is not true about formation of annual rings in trees?

• A. Annual rings are not prominent in trees of temperate region.
• B. Annual ring is a combination of spring wood and autumn wood produced in a year.
• C. Differential activity of cambium causes light and dark bands of tissue in early and late wood, respectively.
• D. Activity of cambium depends upon variation in climate.

Answer 1

The correct option is A

Annual rings are not prominent in trees of temperate region.

The correct option is A.

Explanation of correct option:

1. Due to non-uniform environmental conditions throughout the year, annual rings form in temperate region trees.
2. Cambium is quite active in the spring, but it becomes less active in the winter.

Explanation of incorrect option:

Option B:

1. Annual rings are made out of a year's worth of spring and fall wood.
2. Annual rings are formed in trees due to non-uniform climatic conditions throughout the year. Cambium is very active in the spring season but in winter the activity reduces.

Option C:

1. Differential cambium activity results in light and dark tissue bands in early and latewood.

Option D:

1. In the spring and summer, the vascular cambium is quite active, and secondary xylem is generated.

Final answer: Annual rings are not prominent in trees of the temperate region is the incorrect statement