Define ovule, Biology

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A vertical section of an ovule is shown below.  The correct ploidy levels of the four structures P, Q, R and S respectively are:

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a.  n, 2n, n, n

b.  2n, n, n, n

c.  2n, 2n, 2n, n

d.  n, 2n, 2n, 2n

 

 


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