The shield-shaped cotyledon seen in monocot seeds is known as:

The angle of elevation of the top of a $T.V.$ tower from three points $A, B, C$ in a straight line through the foot of the tower are $\alpha, 2\alpha, 3\alpha$ respectively. If $AB = a$,the height of the tower is

$A$ magnetic needle lying parallel to a magnetic field is turned through $60^{\circ}$. The work done on it is $W$. The torque required to maintain the magnetic needle in the position mentioned above is

The molar heat capacity of water at constant pressure is $75 \, J \, K^{-1} \, mol^{-1}$. When $1.0 \, kJ$ of heat is supplied to $100 \, g$ of water,which is free to expand,the increase in temperature of water is $...... \, K$.

If $f(x) = \begin{cases} \frac{\sin(1+[x])}{[x]}, & \text{for } [x] \neq 0 \\ 0, & \text{for } [x] = 0 \end{cases}$ where $[x]$ denotes the greatest integer not exceeding $x$,then $\lim_{x \rightarrow 0^{-}} f(x)$ is equal to

Match the Column-$I$ with Column-$II$ and select the correct option from the options given below:

Column-$I$ (Disease)	Column-$II$ (Pathogen)
$(A)$ Citrus canker	$(P)$ Protozoa
$(B)$ Malaria	$(Q)$ Fungi
$(C)$ Rust of wheat	$(R)$ Viroid
$(D)$ Bovine spongiform encephalopathy	$(S)$ Bacteria
-	$(T)$ Prions