Starting with the zygote,draw the diagrams of the different stages of embryo development in a dicot.
(N/A) The development of a dicot embryo proceeds through several distinct stages starting from the zygote:
$1$. Zygote: The process begins with the formation of a zygote after fertilization.
$2$. Proembryo: The zygote undergoes transverse divisions to form a proembryo.
$3$. Globular Embryo: Further cell divisions lead to the formation of a globular-shaped embryo.
$4$. Heart-Shaped Embryo: As development continues,the embryo takes on a heart-shaped appearance.
$5$. Mature Embryo: Finally,the embryo matures,showing distinct parts such as the radicle,plumule,and two cotyledons,supported by a suspensor.
$1$. Zygote: The process begins with the formation of a zygote after fertilization.
$2$. Proembryo: The zygote undergoes transverse divisions to form a proembryo.
$3$. Globular Embryo: Further cell divisions lead to the formation of a globular-shaped embryo.
$4$. Heart-Shaped Embryo: As development continues,the embryo takes on a heart-shaped appearance.
$5$. Mature Embryo: Finally,the embryo matures,showing distinct parts such as the radicle,plumule,and two cotyledons,supported by a suspensor.
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The cylindrical portion below the level of cotyledons on the embryonal axis is known as:
Medium
View SolutionCotyledons are
Easy
View SolutionThe root cap is covered by an undifferentiated sheath called $P$,and the shoot apex is enclosed in a hollow foliar structure called $Q$.
$\quad\quad\quad P \quad \quad Q$
$\quad\quad\quad P \quad \quad Q$
Medium
View SolutionMatch the embryonal cell in Column-$I$ with their origin given in Column-$II$ and choose the correct options given below.
Column-$I$ Column-$II$ $a$. Suspensor initial $i$. Large basal cell of the $2$-celled pro-embryo $b$. Embryonal initial $ii$. First cell of the suspensor towards micropylar end $c$. Haustorium $iii$. Lowermost cell of the suspensor $d$. Hypophysis $iv$. Small terminal cell of $2$-celled pro-embryo
| Column-$I$ | Column-$II$ |
| $a$. Suspensor initial | $i$. Large basal cell of the $2$-celled pro-embryo |
| $b$. Embryonal initial | $ii$. First cell of the suspensor towards micropylar end |
| $c$. Haustorium | $iii$. Lowermost cell of the suspensor |
| $d$. Hypophysis | $iv$. Small terminal cell of $2$-celled pro-embryo |
When the inner half of the oospore after the first division develops into an embryo and the outer half develops into a suspensor,this type of development is called:
Medium
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