Question

A plant whose seeds yield safflower and the petals an orange dye is
A. Calendula officinalis
B. Helianthus annuus
C. Rauwolfia serpentina
D. Carthamus tinctorius

Answer 1

Hint:- Angiosperms are categorized under certain families based on some of their special characteristics. The major characteristic includes the number of cotyledons (monocots or dicots), unisexuality or bisexuality, the arrangement of petals, the arrangement of sepals, position of the ovary to other organs of the flower, the symmetry of petals and sepals, production of which type of fruits and presence or absence of endosperm in seeds. The families of angiosperms are named as- Brassicaceae, Malvaceae, Fabaceae, Solanaceae, Liliaceae, Asteraceae, Poaceae, Apocynaceae, and many more families are described.

Complete step-by-step solution:-
The family Asteraceae is considered the largest family of angiosperms having the largest geographical distribution. This family includes angiosperms of high economic importance like medicinal uses, ornamental uses, and other uses. Calendula officinalis is a member of the family Asteraceae. It is commonly known as pot marigold. Helianthus annuus is another example of the family Asteraceae. It is commonly known as the sunflower. It can be used commercially in the production of oils and can also be used as food for many organisms.
The family Apocynaceae includes succulent plants that produce a particular type of poison. Due to this, the poisonous plants producing a certain type of chemicals are included in this family. Rauwolfia serpentina is a member of the family Apocynaceae. This plant grows in different Himalayan ranges and produces significant amounts of a chemical called reserpine. It has many medical uses. Carthamus tinctorius is a member of the family Asteraceae. It is commonly known as Safflower. It is one of the oldest cultivated crops. It is having many commercial uses like the production of an orange colored dye and the production of certain types of oils. Thus the correct answer is option D.

Note:-
Members of each family have certain economic importances like medicinal uses, ornamental uses, or may be used as eatables. The most advanced dicot family is the Asteraceae family and the most advanced monocot family is the Poaceae family. All the common characteristics of members of each family are described in their respective floral formula and floral diagram.