Which of the following is not an insectivorous plant?

Which one of the following hormones,though synthesised elsewhere,is stored and released by the master gland?

The number of sigma $(\sigma)$ bonds in $but-1-ene$ is:

$A$ carrier signal $60 \sin(2\pi \times 10^6 t)$ is used to modulate an audio signal $15 \sin(300\pi t)$. The depth of modulation is .........$\%$.

The thermo emf of a thermocouple is given by $E = aT + bT^2$,where $\frac{a}{b} = -200^{\circ}C$. If the cold junction is kept at $30^{\circ}C$,then the inversion temperature is ($\varepsilon$ in volt,$T$ in centigrade). (in $K$)

The equation $\frac{1}{r} = \frac{1}{8} + \frac{3}{8} \cos \theta$ represents