Final answer:
Tea is derived from angiosperms as it comes from the leaves of the Camellia sinensis plant, whereas pine nuts and Ginkgo biloba supplements are from gymnosperms and therefore not produced by angiosperms.
Step-by-step explanation:
(a) Tea, as it is a product derived from angiosperms, specifically from the leaves of the Camellia sinensis plant.
Angiosperms, also known as flowering plants, encompass a vast diversity, including grasses, herbs, shrubs, and most deciduous trees. These plants are known for their reproductive structures, namely flowers and fruits. Flowers attract pollinators, while fruits often aid in the dispersal of seeds. Tea leaves are harvested from a species of evergreen shrub or small tree that belongs to the family Thecae, which is part of the angiosperm group. Pine nuts, in contrast, come from gymnosperms such as pines, which are not flowering plants but produce seeds without the protective fruit characteristic of angiosperms. Ginkgo biloba, another gymnosperm, produces seeds that are not enclosed in fruits and is known for its distinctive fan-shaped leaves.
Angiosperms are incredibly important to both our natural ecosystems and agriculture, providing many of the foods we eat and materials we use daily. Products such as spices, vegetables, fruits, and grains all originate from angiosperms.