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

How are the female gametes of gymnosperms formed, Q. How are the female gam...

Q. How are the female gametes of gymnosperms formed? What is the relationship between this process and the concept of alternation of generations? In the female strobiles (cones

Explain the bohr''s model, Explain the Bohr's model? Bohr's Model :  ...

Explain the Bohr's model? Bohr's Model :  Electrons move around the nucleus at tremendous speeds and occupy most of the space in an atom. The exact position or location of an

Tracheae - respiratory organs, Tracheae - Respiratory Organs Tracheal ...

Tracheae - Respiratory Organs Tracheal respiration is characteristic of insects. Onychophorans, diplopods, arachnids, and chilopods as well use tracheal system for respiration

What is the virus that causes flu, Q. What is the virus that causes flu? Wh...

Q. What is the virus that causes flu? Why doesn't the body produce permanent immunity against that virus? How does the vaccine against flu work? Flu is a disease caused through

Conventions for using binomial nomenclature, Conventions for using binomial...

Conventions for using binomial nomenclature The names of higher categories are often synthesized from Latin words in the same manner as generic or specific names, and always s

Lamellar models, LAMELLA R MODELS According to James Danielly & Hu...

LAMELLA R MODELS According to James Danielly & Hugh Davson (1935) cell membrane consists of 4 layers P-L-L-P. Molecules of phospholipid has amphipathic nature, i.e. it

Explain pasteurization, Explain Pasteurization The act or process of h...

Explain Pasteurization The act or process of heating a beverage or other food, to a specific temperature for a specific period of time in order to kill microorganisms that cou

Point out some guidelines for breast-feeding, Point out some Guidelines for...

Point out some Guidelines for breast-feeding? 1) Follow demand feeding of the baby instead of a fixed schedule. 2) Initiate breast-feeding within 2 h after a normal delivery

Tolerance to cold and freezing temperatures, Normal 0 false f...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

How is the early diagnosis of genetic diseases usually done, How is the ear...

How is the early diagnosis of genetic diseases usually done? Genetic disease might be diagnosed in the prenatal period by karyotype analysis, in case of aneuploidies, or by DNA

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