Which one of the following is odd?

Read the following statements and choose the set of correct statements:-
$(A)$ In some plants like $Monstera$,roots arise from parts of the plant other than the radicle.
$(B)$ The main functions of the root system are absorption of water and minerals from the soil and providing a proper anchorage to the plant parts.
$(C)$ Leaves originate from shoot apical meristem and are arranged in an acropetal order.
$(D)$ In $Alstonia$,a single leaf arises at each node of stem.
$(E)$ The flowers are hypogynous in cucumber.
Choose the correct option from the options given below:-

$A$: Cattle or goats never graze on $Calotropis$.
$R$: Thorns are present as a morphological means of defence.

Commercially useful surface fibers are obtained from which of the following?

Which of the following plants exhibit variation in the length of their filaments within the same flower?

Select the correct floral diagram of the family Brassicaceae.