Class 12BiologySexual Reproduction in Flowering PlantsMix Examples-Sexual Reproduction in Flowering Plants
MediumGive a scientific reason: Variations are expected in sexually reproducing plants.
(N/A) Sexual reproduction involves the formation of gametes in the gonads,meiosis,and the fusion of gametes.
These processes produce variations due to new combinations of genes resulting from crossing over,the random segregation of chromosomes,and the random fusion of gametes.
Consequently,daughter offspring are genetically different from their parents.
Thus,sexual reproduction serves as a primary source of variation within a population.
These processes produce variations due to new combinations of genes resulting from crossing over,the random segregation of chromosomes,and the random fusion of gametes.
Consequently,daughter offspring are genetically different from their parents.
Thus,sexual reproduction serves as a primary source of variation within a population.
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If the diploid number of an angiospermic plant is $24$,the number of chromosomes in the pollen grain,endosperm,and integument will be:
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View SolutionMatch the following terms related to Gymnosperms/Angiosperms (as per standard botanical terminology) with their respective structures:
Column-$I$ Column-$II$ $P$. Pistil/Megasporophyll $I$. Megasporophyll $Q$. Ovule $II$. Megasporangium $R$. Embryo sac $III$. Female gametophyte
| Column-$I$ | Column-$II$ |
| $P$. Pistil/Megasporophyll | $I$. Megasporophyll |
| $Q$. Ovule | $II$. Megasporangium |
| $R$. Embryo sac | $III$. Female gametophyte |
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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.
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View SolutionWhich of the following processes occur simultaneously?
$(i)$ Ovule $\rightarrow$ Seed
$(ii)$ Ovary $\rightarrow$ Fruit
$(iii)$ $MMC$ $\rightarrow$ Megaspore
$(iv)$ $PMC$ $\rightarrow$ Pollen grain
$(i)$ Ovule $\rightarrow$ Seed
$(ii)$ Ovary $\rightarrow$ Fruit
$(iii)$ $MMC$ $\rightarrow$ Megaspore
$(iv)$ $PMC$ $\rightarrow$ Pollen grain
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