Which organisms possess a contractile vacuole as a specialized organelle for osmoregulation?

Match the scientists given in column $I$ with their discovery given in column $II$ and choose the correct option.

Column-$I$ (Scientists)	Column-$II$ (Discovery)
$A$. Ernst Mayr	$I$. Discovered Viroids
$B$. Whittaker	$II$. Gave the name virus
$C$. Ivanowsky	$III$. Proposed five kingdom classification
$D$. Diener	$IV$. Evolutionary biology

Identify the odd one out from the given groups based on their biological classification.

Read the following statements.
$a. 2, 4-D$ is widely used to kill dicotyledonous weeds and does not affect mature monocot plants.
$b.$ Auxin helps to overcome apical dominance.
$c.$ The pigments of euglenoids are identical to those present in higher plants.
$d.$ The cell wall is absent in dinoflagellates.
Select the correct statements -

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

Column-$I$	Column-$II$
$(A)$ Chief producers in oceans	$(i)$ Slime moulds
$(B)$ Red Tides	$(ii)$ Diatoms
$(C)$ Plasmodium	$(iii)$ Euglenoids
$(D)$ Mixotrophic nutrition	$(iv)$ Dinoflagellates

Which of Whittaker's kingdoms include producers?