What is primary growth in shoot, Biology

Assignment Help:

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.


Related Discussions:- What is primary growth in shoot

Determine the improper occlusal scheme, Improper Occlusal Scheme This i...

Improper Occlusal Scheme This is an important cause of failure as the implant are more sensitive to occlusal trauma and leads to prosthetic failure and bone loss. The susceptib

Proto-oncogenes, Proto-oncogenes Proto-oncogenes are common genes pre...

Proto-oncogenes Proto-oncogenes are common genes present. In all organisms and emerge to be highly conserved in the course of evolution. They have been isolated in species ra

State the female reproductive system, State the Female Reproductive System ...

State the Female Reproductive System The female reproductive organ consists of the following: Uterus receives fertilied ovum and featus develops in it Two ovaries produce

Assignment of botany, habitat, habit, cell wall chemistry, reason why cell ...

habitat, habit, cell wall chemistry, reason why cell wall like this of Archaebacteria , eubacteria,fungi,algae,bryophytes ,pteridophyes, gymnosperms , angiosperms..

Why the pancreas is considered a mixed gland, Q. What is a mixed gland? Why...

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

Enumerate about the wisconsin card sorting test, Enumerate about the Wiscon...

Enumerate about the Wisconsin Card Sorting Test Verbal memory, non verbal memory etc. are tested through the presentation of stimuli such as verbal learning test, selective rem

What are pioneer species, What are pioneer species? What is the role of the...

What are pioneer species? What is the role of the pioneer species? Pioneer species are those first species that colonize places where before there were no living beings, like,

Coordination and control, how is an increase in glucose concentration contr...

how is an increase in glucose concentration controlled in the human body?

Is a gene a triplet of consecutive dna nucleotides, Is a gene a triplet of ...

Is a gene a triplet of consecutive DNA nucleotides? A gene is not a triplet of DNA nucleotides with their respective nitrogen-containing bases, like AAG or CGT. The nucleotide

Provide communication between the cells, A) Maintain structural integrity o...

A) Maintain structural integrity of the cell B) Regulate the movement of substances into and out of the cell C) Provide communication between the cells D) ALl of the above

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