Auxospores and hormocysts are formed respectively by

Companion cells in plants are associated with

The engine of a jet aircraft applies a thrust force of $10^5 \ N$ during take-off and causes the plane to attain a velocity of $1 \ km/s$ in $10 \ s$. The mass of the plane is:

$A$ block of mass $1\,kg$ lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is $0.6$. If the acceleration of the truck is $5\,m\,s^{-2}$,the frictional force acting on the block is ........ $N$.

The function $\sin^2(\omega t)$ represents

Assuming the diodes to be of silicon with forward resistance zero,the current $I$ in the following circuit is.......$mA$