MCQ
Identify $A$ and $B$ in diagram given below:


- A$A-Stamen; B-Pistil$
- B$A-Filament; B-Anther$
- ✓$A-Anther; B-Filament$
- D$A-Pistil, B-Stamen$

$(ii)$ It is tetragonal in shape with 4 microsporangia located at each lobe in its corners
$(iii)$ Microsporangia develop into pollen sac, which produces pollen
$(a)$ A typical stamen
$(b)$ Three-dimensional cut section of an anther
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$I.$ Separation of the product from the reactor
$II.$ Purification of the product
$III.$ Formation of the product with suitable preservatives
$IV.$ Quality control testing and clinical trials in case of drugs Which of the statements given above are correct?
$I.$ Abnormal development
$II.$ Father
$III.$ Mother
$IV.$ Autosomes