Class 12BiologySexual Reproduction in Flowering PlantsMix Examples-Sexual Reproduction in Flowering Plants
MediumProvide information about pre-fertilization structures and events in flowering plants.
(N/A) Pre-fertilization events involve several hormonal and structural changes that lead to the differentiation and development of the floral primordium.
$1$. Floral Primordium Development: Hormonal changes trigger the growth of the floral primordium.
$2$. Reproductive Structures: Within the flower,the male reproductive organ,the $androecium$ (stamen),and the female reproductive organ,the $gynoecium$ (pistil),differentiate and develop.
$3$. Gametogenesis: This involves the formation of male gametes (microsporogenesis) and female gametes (megasporogenesis).
$4$. Variation: The number and length of stamens are variable in flowers of different species,reflecting the diversity in reproductive strategies.
$1$. Floral Primordium Development: Hormonal changes trigger the growth of the floral primordium.
$2$. Reproductive Structures: Within the flower,the male reproductive organ,the $androecium$ (stamen),and the female reproductive organ,the $gynoecium$ (pistil),differentiate and develop.
$3$. Gametogenesis: This involves the formation of male gametes (microsporogenesis) and female gametes (megasporogenesis).
$4$. Variation: The number and length of stamens are variable in flowers of different species,reflecting the diversity in reproductive strategies.
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Similar Questions
From the processes given below,how many are associated with post-fertilisation events?
Medium
View SolutionMatch the following columns regarding the chromosome number in meiocytes $(2n)$ of different organisms:
| Column-$I$ (Organism) | Column-$II$ (Chromosome number in meiocyte) |
| :--- | :--- |
| $p$. Ophioglossum | $v$. $20$ |
| $q$. Apple | $w$. $34$ |
| $r$. Rice | $x$. $24$ |
| $s$. Maize | $y$. $42$ |
| | $z$. $1260$ |
| Column-$I$ (Organism) | Column-$II$ (Chromosome number in meiocyte) |
| :--- | :--- |
| $p$. Ophioglossum | $v$. $20$ |
| $q$. Apple | $w$. $34$ |
| $r$. Rice | $x$. $24$ |
| $s$. Maize | $y$. $42$ |
| | $z$. $1260$ |
Easy
View SolutionAssertion $(S)$: Death is a meaningful event.
Reason $(R)$: Death keeps the number of organisms of each species limited.
$(A)$ Both $S$ and $R$ are true,$R$ is the correct explanation of $S$.
$(B)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(C)$ $S$ is true and $R$ is false.
$(D)$ $S$ is false and $R$ is true.
Reason $(R)$: Death keeps the number of organisms of each species limited.
$(A)$ Both $S$ and $R$ are true,$R$ is the correct explanation of $S$.
$(B)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(C)$ $S$ is true and $R$ is false.
$(D)$ $S$ is false and $R$ is true.
Medium
View SolutionExplain post-fertilization events.
Medium
View SolutionRead the following statements regarding gynoecium in angiosperms.
$i$. Embryo sac is located towards the micropylar end of the ovule.
$ii$. Placenta is present inside the ovary locules.
$iii$. Stigma serves as the receptive organ for pollen grains.
$iv$. Cells of the nucellus are haploid with abundant food.
$v$. Ovules generally have more haploid cells than diploid cells.
Identify the correct set of statements from the following.
$i$. Embryo sac is located towards the micropylar end of the ovule.
$ii$. Placenta is present inside the ovary locules.
$iii$. Stigma serves as the receptive organ for pollen grains.
$iv$. Cells of the nucellus are haploid with abundant food.
$v$. Ovules generally have more haploid cells than diploid cells.
Identify the correct set of statements from the following.
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