MCQ
$\int_0^{\frac{\pi}{2}} \log \left[\sqrt{\frac{1-\cos 2 x}{1+\cos 2 x}}\right] d x=$ ____________.
- A$\frac{\pi}{8}$
- ✓0
- C1
- D$\frac{\pi}{4}$
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The ability of the pistil to recognize pollen is dependent on ____________ components and ____________ guide the entry of pollen tube. This study leads to help ____________ in getting ____________ even in ____________.
p. Chemical
q. Plant breeders
r. Hybrids
s. Incompatible pollination
t. Synergids