Identify the correct terms for the following analogy-based questions:
$(i)$ Sunflower : Alternate phyllotaxy :: Alstonia : ...........
$(ii)$ Datura : Actinomorphic flower :: Bean : ............

The longest cell of plants is found in:

Choose the correct sentence.

Colchicine:
$I.$ is obtained from $Colchicum \text{ } autumnale$
$II.$ is a cytokinesis inhibitor
$III.$ induces polyploidy
$IV.$ is obtained from $Fabaceae$ family
$V.$ Floral formula: $\oplus \text{ } \text{O} \text{ } P_{3+3} A_{3+3} G_{(3)}$
Which are the correct statements?

Match List-$I$ (Placentation type) with List-$II$ (Example) and select the correct option:
List-$I$
$A$. Marginal
$B$. Axile
$C$. Parietal
$D$. Basal
List-$II$
$I$. Mustard
$II$. Pea
$III$. Marigold
$IV$. Lemon

Which of the following characteristics is $NOT$ associated with dicotyledonous plants?