(A) In angiosperms,the megaspore mother cell undergoes meiosis to produce four megaspores. Three of these degenerate,and the remaining one develops in

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(A) In angiosperms,the megaspore mother cell undergoes meiosis to produce four megaspores. Three of these degenerate,and the remaining one develops into the embryo sac. The embryo sac is a seven-celled,eight-nucleate structure that represents the female gametophyte in flowering plants.

Class 12 Biology Sexual Reproduction in Flowering Plants The Pistil, Megasporangium (ovule) and Embryo sac

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The embryo sac represents which stage?

A
Female gametophyte
B
Male gametophyte
C
Male sporophyte
D
Female sporophyte

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Class 12 Questions

Class 12

Biology Questions

Chapter

Sexual Reproduction in Flowering Plants

Subtopic

The Pistil, Megasporangium (ovule) and Embryo sac

Which of the following structures is not a part of the pistil (gynoecium)?

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Filiform apparatus are

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The egg apparatus consists of $.......$

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The cells in the embryo sac which act as haustoria are:

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Match List-$I$ with List-$II$:

List-$I$ List-$II$

$A$. Hilum $I$. Residual persistent nucellus

$B$. Perisperm $II$. Basal part of ovule

$C$. Chalaza $III$. Junction between ovule and funicle

$D$. Funicle $IV$. Stalk by which ovule is attached to placenta

Choose the correct answer from the options given below:

List-$I$	List-$II$
$A$. Hilum	$I$. Residual persistent nucellus
$B$. Perisperm	$II$. Basal part of ovule
$C$. Chalaza	$III$. Junction between ovule and funicle
$D$. Funicle	$IV$. Stalk by which ovule is attached to placenta