Consider the following plants :
- 1.Groundnut
- 2.Horse-gram
- 3.Soybean
How many of the above belong to the pea family ?
Show answer
Answer: C. The pea family (Fabaceae, also called Leguminosae) contains the legumes. Groundnut (Arachis hypogaea), horse-gram (Macrotyloma uniflorum) and soybean (Glycine max) are all legumes that bear pods and fix nitrogen. So all three belong to the pea family.
Watch for: Groundnut is often thought of as an oilseed or a 'nut', but botanically it is a legume like peas.
Why the other options are wrong
- A. Wrong because all three listed plants are legumes.
- B. Wrong because all three listed plants are legumes.
- D. Wrong because groundnut, horse-gram and soybean all belong to Fabaceae.
Source to check: NCERT Class 11 Biology, Chapter 5 'Morphology of Flowering Plants' (Family Fabaceae)
Answer from the official UPSC key. Written and fact-checked by AI against the official key. Spotted a mistake? Report it.