MCQ
Identify labelled part $'X'$ from the figure :


- AMicrospore
- BMiddle layer
- CEndothecium
- ✓Tapetum

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$R $ : It has enhanced nutritional content of vitamin $A.$
$I$. They called lungs of the planet
$II$. They harbours probably millions of the species
$III$. They are largest tropical rainforest in south America and has highest biodiversity on earth
$IV$. They are beings cut and cleared for cultivating soya-beans or for the conversion to grasslands for raising beef cattle
Choose the correct option