Question

Chief features of family Brassicaceae/Cruciferae is presence of
A. Latex
B. Pectin
C. Alkaloids
D. Myrosin.

Answer 1

Hint: Brassicaceae consist of a well-formed corolla, a septum separating the fruit, absence of stipules and have simplified (but a few time sharply intended) leaves. They consist of various enzymes that change glucosinolates into nitriles, thiocyanates and isothiocyanates.

Complete step by step answer:
To answer this question, first, we need to know about the family Brassicaceae. Brassicaceae is an average size and commercially vital family of flowering plants commonly referred as the herbaceous cabbage family. Maximum numbers of them are shorter than herbs, some shrubs, with plain, but sometimes deeply cut, alternatively set leaves without in leaf rosettes, with terminal blooms without leaflets, consisting of flowers with four separate sepals, four separate alternative petals, two small and four large separate stamens, and a fruit with seeds inside in lines, separated by a septum.
Now, let us find the solution from the option.
In individuals of Cruciferae (Brassicaceae), excretive cells are present that consist of myrosin enzyme. This is also gone along with the sulphur consisting of glycosides which are broken down or hydrolyzed them to isothiocyanates (oil) and glucose. Species including the Brassicaceae family are maximum biennial, annual, herbal plants, some of them are climbing plants and a few are dwarf shrubs.

Thus, the correct option is D. i.e. Myrosin.

Note:
Most of the Brassicaceae individuals have C3 carbon fixation. Brassicaceae contain different combinations of many glucosinolates. They additionally consist of enzymes referred as myrosinases that change the glucosinolates into isothiocyanates, thiocyanates that are poisonous to various organisms, and so they function as a safeguard against herbivory.