Explanation –

Statement 1 is correct. Tree rings, also known as growth rings, are used to determine the age of a tree. Each ring typically represents one year of growth, allowing scientists to estimate the tree’s age by counting these rings.

Statement 2 and 3 are incorrect. Tree rings are less visible in tropical climates because trees in these regions can grow year-round without distinct seasonal changes that cause ring formation. Tree rings are more visible in temperate and boreal regions where there are clear seasonal variations. Tree rings consist of various cell types, including vessel elements (in hardwoods) that help conduct water, but they also include other structures like fibers and tracheids (in softwoods) that provide strength and support.

Source: The Hindu