Consider the following plants: Groundnut Horse-gram Soybean

Consider the following plants:

1. Groundnut
2. Horse-gram
3. Soybean

How many of the above belong to the pea family?

(a) Only one
(b) Only two
(c) Only three
(d) None

Correct Answer: (c) Only three

Explanation:
All three plants, groundnut (peanut), horse-gram, and soybean, belong to the pea family (Fabaceae or Leguminosae).
Possible Sources: Botany textbooks and plant taxonomy references.