can anyone explain me development of embryo in dicot
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Development of Embryo : The fetus creates at the micropylar end of the developing life sac where the zygote is arranged. The zygote gives rise first to the ace developing life, and after that to the globular, develop incipient organism. A typical dicot embryo consists of an embryonal pivot and two cotyledons.
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Answer:
Development of Embryo in Dicots:
Development of Embryo in Dicots:According to Soueges, the mode of origin of the four-celled pro-embryo and the contribution made by each of these cells makes the base for the classification of the embryonal type. However, Schnarf (1929), Johansen (1945) and Maheshwari (1950) have recognized five main types of embryos in dicotyledons.
Development of Embryo in Dicots:According to Soueges, the mode of origin of the four-celled pro-embryo and the contribution made by each of these cells makes the base for the classification of the embryonal type. However, Schnarf (1929), Johansen (1945) and Maheshwari (1950) have recognized five main types of embryos in dicotyledons.They are as follows:
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.(i) Crucifer type:
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.(i) Crucifer type:Basal cell plays little or no role in the development of the embryo.
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.(i) Crucifer type:Basal cell plays little or no role in the development of the embryo.(ii) Asterad type:
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.(i) Crucifer type:Basal cell plays little or no role in the development of the embryo.(ii) Asterad type:Basal and terminal cells play an important role in the development of the embryo.
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.(i) Crucifer type:Basal cell plays little or no role in the development of the embryo.(ii) Asterad type:Basal and terminal cells play an important role in the development of the embryo.II. The terminal cell of the two-celled proembryo divides by a transverse wall, Basal cell plays a little or no role in the development of the embryo.
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.(i) Crucifer type:Basal cell plays little or no role in the development of the embryo.(ii) Asterad type:Basal and terminal cells play an important role in the development of the embryo.II. The terminal cell of the two-celled proembryo divides by a transverse wall, Basal cell plays a little or no role in the development of the embryo.III. Solanad type:
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.(i) Crucifer type:Basal cell plays little or no role in the development of the embryo.(ii) Asterad type:Basal and terminal cells play an important role in the development of the embryo.II. The terminal cell of the two-celled proembryo divides by a transverse wall, Basal cell plays a little or no role in the development of the embryo.III. Solanad type:Basal cell usually forms a suspensor of two or more cells.
The terminal cell of the two-celled pro-embryo divides by longitudinal wall.(i) Crucifer type:Basal cell plays little or no role in the development of the embryo.(ii) Asterad type:Basal and terminal cells play an important role in the development of the embryo.II. The terminal cell of the two-celled proembryo divides by a transverse wall, Basal cell plays a little or no role in the development of the embryo.III. Solanad type:Basal cell usually forms a suspensor of two or more cells.IV. Caryophyllod type:
Basal cell does divide further.
Basal cell does divide further.V. Chenopodiad type:
Basal cell does divide further.V. Chenopodiad type:Both basal and terminal cells take part in the development of the embryo.
Basal cell does divide further.V. Chenopodiad type:Both basal and terminal cells take part in the development of the embryo.Here citing the example of Capsella bursa-pastoris (Shepherd’s purse), the detailed study of Crucifer type of the development of the embryo has been given.
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