Rings present on cross section of stem
How can the age of the tree be estimated from analysis of rings present on the cross section of stem?
Expert
For growth of tree it is essential to have formation of the new vessels in the stem, a task performed by vascular cambium. The vascular cambium is more active in hot seasons (spring and summer) generating a lighter band made of large calibered vessels. Throughout winter and fall vascular cambium produces the opposite, so small calibered vessels and darker band appear outside preceding lighter band. Thus two ring bands are made annually, one lighter and the other darker. By a direct count of these band pairs one can estimate age of tree.
Suppose a scientist is testing the hypothesis which vertebrates evolved from echinoderms. Having a research object a lately found protochordate species, what is an illustration of a discovery which would weaken the hypothesis? What is an illustration
How do plants resolve the problem of the transporting substances by their tissues?
Which plant tissues form plant roots?
What is the type of digestive system of echinoderms?
In my view, organizational learning is just a means in order to achieve strategic objectives. But creating a learning organization is also a goal, since the ability permanently and collectively to learn is a necessary precondition for thriving in the new context. Therefore, the capacity of an org
Resource Management: It is the proficient and effective deployment and assigning of an organization's resources when and where they are required. These resources might comprise financial resources, inventory, production resources, human skills, or inf
How dissimilar is the amphibian heart from the fish heart?
How different is growth according to biotic potential of a viral population from growth according to biotic potential of bacterial population?
How circulatory systems contribute in the functioning of endocrine system?
What takes place when auxin concentration in some structures of plant is over the action range of hormone?
18,76,764
1941302 Asked
3,689
Active Tutors
1434336
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!