Explain about vascular cambium, Biology

Assignment Help:

How can the age of a tree be estimated from the analysis of the rings present on a cross section of its stem?

For the growth of the tree it is essential to have formation of new vessels within the stem, a task performed by the vascular cambium. The vascular cambium is more active in hot seasons (spring and summer) forming a lighter band made of large calibered vessels. During winter and fall the vascular cambium makes the opposite, so small calibered vessels and a darker band appears outside the previous lighter band. Therefore a two ring bands are made yearly, one lighter and the other darker. By a direct count of these band pairs one can estimate the age of the tree.

 


Related Discussions:- Explain about vascular cambium

Industrial melanism, In this section, we shall discuss a classic example of...

In this section, we shall discuss a classic example of natulal selection in action. In the preceding unit, it was stated that natural selection always aims at eliminating alleles,

Define secondary and tertiary structure of a protein, Is it expected that a...

Is it expected that a change in the primary, in the secondary or in the tertiary structure of a protein will produce more functional consequences? Any change of the protein str

Character displacement and ecological exclusion, Consider two species of or...

Consider two species of organisms, species A and species B. Species A has a population in a community. Another population species B arrives into the same community, rather suddenly

Define advantages of using yeast as a source of protein, Define Advantages ...

Define Advantages of using Yeast as a source of Protein? 1. Large size, hence separation from the culture medium is easy. 2. As the pH of the growth is towards acidic side,

Hypertensive emergencies, Hypertensive emergencies should be treated within...

Hypertensive emergencies should be treated within one hour. Hypertensive urgencies may be treated more slowly. The term accelerated malignant hypertension is used when retinal haem

Explain the chloride permeability, An impermeable membrane separates one li...

An impermeable membrane separates one liter of a 1M KCl solution in the left compartment from one liter of 1M NaCl solution in the right compartment.  At 2 AM today the membrane be

Define the translocation of food through sieve tubes, Arrange the following...

Arrange the following processes sequentially to define the translocation of food through sieve tubes.   i. Unloading of sugar in sink cells (or cells of root).  ii. Uptak

Define Types of plants and animal on earth - taxonomy, Define kinds of plan...

Define kinds of plants and animal on earth - Taxonomy? Taxonomic studies have major objective-the learning of the kinds of plants and animal on earth, their names, their distin

How does hcl also directly participate in digestion, Besides being fundamen...

Besides being fundamental for the activation of the main gastric digestive enzyme how does HCl also directly participate in digestion? With its corrosive effect, HCl also helps

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd