Sexual Reproduction in Flowering PlantsMedium
Question
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : A typical unfertilized, angiosperm embryo sac at maturity is 8 nucleate and 7-celled.
Reason (R) : The egg apparatus has 2 polar nuclei.
In the light of the above statements, choose the correct Ans. from the options given below :
Options
A.Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$
B.Both $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is NOT the correct explanation of $\mathbf{A}$
C.$\mathbf{A}$ is true but $\mathbf{R}$ is false
D.$\mathbf{A}$ is false but $\mathbf{R}$ is true
Solution
A typical Angiosperm embryo sac, at maturity is 7 -celled and 8 nucleate.
Polar nuclei are situated below the egg apparatus in the large central cell.
Three cells are grouped together at micropylar end and constitute the egg apparatus.
Hence, $A$ is true but $R$ is false.
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