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Saprophytic protists are:

Which of the following is not a feature of Tunicates?
1. Only the larvae have notochord
2. Presence of endostyle
3. Secretion of cellulose sac
4. Larvae are voracious eaters

A particle projected with kinetic energy ${\mathrm{k}}_0$ with an angle of projection $\mathrm{\theta }$. Then the variation of kinetic K with vertical displacement y is
1.  linear
2.  parabolic
3.  hyperbolic
4.  periodic

Three particles moving with constant velocities ${\mathrm{V}}_1, {\mathrm{V}}_2$ and V respectively as given in the figure. After some time all three particles are in the same line, then relation among ${\mathrm{V}}_1, {\mathrm{V}}_2$ and V is
                                      
1.  $\mathrm{V} = {\mathrm{V}}_1 + {\mathrm{V}}_2$
2.  $\mathrm{V} = \sqrt{{\mathrm{V}}_1{\mathrm{V}}_2}$
3.  $\mathrm{V} = \frac{{\mathrm{V}}_1{\mathrm{V}}_2}{{\mathrm{V}}_1+{\mathrm{V}}_2}$
4.  $\mathrm{V} = \frac{\sqrt{2}{\mathrm{V}}_1{\mathrm{V}}_2}{{\mathrm{V}}_1+{\mathrm{V}}_2}$

Which has highest bond energy ?
1. CO
2. CO⁺
3. N₂
4. ${\mathrm{N}}_2^{+}$