Epicotyl and hypocotyl in seed differences, function and definition | what is epicotyl and hypocotyl | epicotyl vs hypocotyl | How do you distinguish/ compare epicotyl from hypocotyl.
During the seed germination the important two structure developed at the the cotyledonary node of embryonal axis of seed are epicotyl and hypocotyl which helps in hypogeal and epigeal seed germination.
What is epicotyl and hypocotyl
What is epicotyl:- epicotyl is the part of seedling of stem of the embryonal axis which exist above the cotyledonary node in a dicot embryo is known as epicotyl which start to develop from cotyledonary node and terminate at plumule or exist between cotyledonary node and plumule and responsible for hypogeal seed germination.
What is hypocotyl:– hypocotyl is the part of embryonic axis which exists between the cotyledonary node and radical in Dicot embryo is known as hypocotyl which start to develop from radicals and terminate at cotyledonary node and responsible for epigeal seed germination.
In Dicot seed embryo there is various characteristics features, presence of two cotyledon which is attached at a point known as cotyledonary node on embryonal axis. Above Embryonal axis in Dicot seed there is presence of epicotyl and plumule which are responsible for development of shoot system for plant life. Below embryonal axis in Dicot seed there is presence of Hypocotyl and radical which are responsible for development of root system in plant life.
Epicotyl and hypocotyl in seed differences, function and definition
Definition of epicotyl in biology
Epicotyl definition in biology: the portion of embryonal axis which lies above the cotyledon and present between the plumule and cotyledonary node in a Dicot embryo is known as epicotyl which start to develop from cotyledonary node and terminate with plumule.
Definition of hypocotyl in biology
Hypocotyl definition in biology: the portion of embryonal axis which lies below the cotyledon and present between the radicle and cotyledonary node in a Dicot embryo is known as hypocotyl and terminate with radicle.
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What are Functions of epicotyl
Epicotyl functions:- An epicotyl is important for the beginning stages of a plant’s life, it is the region of a seedling stem above the stalks of the seed leaves of an embryo plant and it grows rapidly, showing hypogeal germination, and extends the stem above the soil surface.
What are function of hypocotyl
Hypocotyl is important for emergence of the radicle, the hypocotyl emerges and lifts the growing tip (usually including the seed coat) above the ground, bearing the embryonic leaves (called cotyledons), and the plumule that gives rise to the first true leaves.
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How do you compare epicotyl and hypocotyl?, epicotyl is part of embryonal axis present between cotyledonary node and plumule just above cotyledon in Dicot embryo and it terminate into plumule which are responsible for hypogeal seed germination whereas hypocotyl is part of embryonal axis present between cotyledonary node and radicle just below cotyledon in Dicot embryo and it terminate into radicle which are responsible for epigeal seed germination.
How do distinguish epicotyl from hypocotyl?, you can distinguish epicotyl and hypocotyl in following points- 1) epicotyl is part of embryonal axis which exist above the cotyledonary node while hypocotyl is part of embryonal axis which exist below the cotyledonary node, and 2) epicotyl responsible for hypogeal seed germination in which epicotyl enlogates so that cotyledon remain in the soil while hypocotyl responsible for epigeal seed germination in which hypocotyl enlogates so that cotyledon comes out from soil.
How does epicotyl differ from hypocotyl? The main difference between hypocotyl and epicotyl is that, epicotyl is the part of embryonal axis which exists just above the cotyledonary node and ends with plumule on ther hand hypocotyl is part of embryonal axis which is just below the cotyledonary node in Dicot embryo.
Differences between epicotyl and hypocotyl in Dicot seed
This is very important questions for class 8th, 9th, 10th, 11th and 12th students those who are preparing for their annual board and other competitive examinations.
Regarding this “what is difference between epicotyl and hypocotyl”, epicotyl is part of embryonal axis present between cotyledonary node and plumule just above cotyledon in Dicot embryo and it terminate into plumule which is responsible for hypogeal seed germination and hypocotyl is part of embryonal axis present between cotyledonary node and radicle just below cotyledon in Dicot embryo and it terminate into radicle which is responsible for epigeal seed germination.
List 3 main differences/ comparison/ distinguish/ contrast/ epicotyl vs hypocotyl/ differentiate between epicotyl and hypocotyl are following:-
1) epicotyl is the portion of the embryonal axis which lies above the cotyledon in Dicot embryo while hypocotyl is the portion of the embryonal axis which lies below the cotyledon in Dicot embryo
2) epicotyl is present between cotyledonary node and plumule on embryonal axis in dicot seed while hypocotyl is present between cotyledonary node and radicle on embryonal Axis in dicot seed.
3) epicotyl terminal part is plumule which are responsible for hypogeal seed germination while hypocotyl terminal part is radicle which are responsible for epigeal seed germination
4) epicotyl elongates during hypogeal seed germination so that cotyledon remain in the soil while hypocotyl enlogates during epigeal seed germination so that cotyledon comes out from soil
Important features and characteristics of epicotyl
◆ Epicotyl:-
1) the portion of the embryonal axis which lies above the cotyledon in Dicot embryo is known as epicotyl.
2) it is present between cotyledonary node and plumule on embryonal Axis in dicot seed.
3) its terminal part is plumule which are responsible for hypogeal seed germination
4) in hypogeal germination, epicotyl elongates and cotyledon remain in soil.
Important features and characteristics of hypocotyl
◆ Hypocotyl:-
1) the portion of the embryonal axis which lies below the cotyledon in Dicot embryo is known as hypocotyl.
2) it is present between cotyledonary node and radicle on embryonal Axis in dicot seed.
3) its terminal part is radicle which are responsible for epigeal seed germination
4) in epigeal germination, hypocotyl elongates and cotyledon comes out of soil.
Conclusions:-
Hypocotyl and epicotyl are two important structure occurs near the embryonal axis in Dicot seed during the germination and responsible for first leaf and enlogation of parts of plants.
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