Monocotyledonous embryo, Biology

Monocotyledonous Embryo

The early development of the proembryo in monocots follows the same pattern as in the dicots. However, at the time of differentiation in the globular proembryo certain fundamental differences arise. In monocots one half of the terminal cell and its derivatives have retarded growth, whereas the other half grows rapidly to form one cotyledon.

As a result of this asymmetric growth, in later stages the stem tip, which is also derived from the terminal cell, appears to be lateral in position The major differences between the dicot and the monocot embryos arise due to disparity in the number and position of the cells of the terminal quadrant of the proembryo which contribute to the formation of the cotyledonary and epicotyl regions. In the dicotyledons derivatives of the two opposite cells of the terminal quadrant give rise to the two cotyledons. Among the monocotyledons the number of cells of the quadrant that contribute to the cotyledons varies.

Posted Date: 1/23/2013 7:24:53 AM | Location : United States







Related Discussions:- Monocotyledonous embryo, Assignment Help, Ask Question on Monocotyledonous embryo, Get Answer, Expert's Help, Monocotyledonous embryo Discussions

Write discussion on Monocotyledonous embryo
Your posts are moderated
Related Questions
List the types of Gellan gum.   The three types of gellan gums are: High acetyl gellan (partially deacetylated) Low acetyl gellan (highly deacetylated) High cl

Q. What is the difference between cerebrum and brain? What are the major parts of these structures? The concept of brain or encephalon comprehends the cerebrum mostly referred

Define some Precautions for Estimation of the Amount of Bacteria? 1. Dilution should be made carefully. 2. Use fresh sterile pipette for making each dilution. 3. Aseptic

Explain Chemical Formulas and Reactions? Chemical Formulas and Reactions :  Molecules formed by the chemical bonding of atoms are described by chemical formulas. If energy

Transfer RNA which is also known as tRNA is an adaptor molecule composed of RNA, classically 73 to 93 nucleotides in length, which serves as the physical link between the nucleotid

An enzyme isolated from a mutant bacterium grown at 20 degrees celsius works in a test tube at 20 degrees celsius but not at 37 degrees celsius( 37 degrees celsius is the temperatu

Q. Explain Femoral Approach? This approach involves the insertion of a catheter over a guidewire i.e. inserted into a sheath in the right femoral artery. Systemic anticoagulati

Explain colloidal state Foods contain a high percentage of water in which other nutrients present are dispersed. The existence of the colloidal state was first recognized by T

Explain about the Thermoplastic Extrusion? This is a major technique used for vegetable proteins at present. Thermoplastic extrusion leads to dry fibrous and porous granules or

Explain Changes in feeding behaviour of infants? On maturation of neuro-muscular system, the body is able to coordinate sucking, swallowing and breathing. Till about three mont