What is primary growth in shoot, Biology

What is Primary Growth in Shoot?

The growth in height of a plant stem results from the division of cells at the apex, or tip of the stem, called the shoot tip. Here, a group of cells form a raised dome called an apical meristem, which is located at the very tip of a shoot, a part of the bud. This meristematic tissue is very similar to what is found in the root tip, except that this apical meristem is formed from a terminal bud found at the tip of the stem. So a "bud" consists of a rounded dome of dividing cells that are enclosed and protected by scales, until they start to grow new cells. Similar to the root, the shoot apical meristem also gives rise to three primary tissues known as: the protoderm, the ground meristem, and the procambium.

Other structures in the shoot tip that deserve attention are the leaf primordia. These are tiny embryonic leaves that develop along with the shoot tip. The leaf primordia are located around the apical meristem dome, and their points of origin (called nodes) determine the ultimate pattern of leaf arrangement - in other words, are they alternately, or oppositely arranged around the twig?

1549_twig anatomy.png

As new cells are added by the apical meristem, the shoot elongates and increases in height. There are regions of elongation and maturation that are similar to those in the root tip, but additionally, the ground tissue will also form tissues known as the pith and cortex.

Posted Date: 4/30/2013 2:44:56 AM | Location : United States

Related Discussions:- What is primary growth in shoot, Assignment Help, Ask Question on What is primary growth in shoot, Get Answer, Expert's Help, What is primary growth in shoot Discussions

Write discussion on What is primary growth in shoot
Your posts are moderated
Related Questions
Define Obesity - Excessive Fat Intake? In obesity, cutting down total energy intake or increasing output to ensure energy balance is the basic principle of prevention. Fat bein

Q. Basic working of Midbrain? Midbrain: Also known as the mesencephalon, this part is located behind the frontal lobes and in the center of the entire brain. It deals with func

Q. Explain about Lactose Intolerance? We commonly hear from people of all age groups, particularly children and elderly to be complaining of abdominal discomfort after consumin

How Water Balance Take Place in Human Body? The amount of fluid in the body is tightly controlled because imbalance can be devastating. In a normal individual, the maintenance

Following ways can be used for control of noise pollution: It can be controlled by designing, fabricating and using quiter machines. In heavy industries, sound proof insul

Define Health Benefits of Other Dietary Factors with Antinutritional Effects? Despite the predominantly nutritional antagonistic effects of the factors described above, there i

Q. Explain about Dietary Management? Treatment for gout often include a diet of lower purine intake. Indeed, about one third of the body's uric acid can be attributed to diet.

What are holandric genes? The Holandric genes are genes situated in the nonhomologous region of the Y chromosome. Holandric genes condition phenotypes that emerge only in men s

Q. What is a mixed gland? Why the pancreas is considered a mixed gland? Mixed gland is a gland that produces exocrine and endocrine secretions. The pancreas is an example of

Chromatin is uncondensed nuclear DNA, the typical DNA morphology in interphase (the phase of the cell cycle in which the cells is not separating itself). In this phase of the cell