Question

Nitrogen fixation occurs with the help of symbiotic bacteria in -
A. Pea
B. Lettuce
C. Beans
D. Tomato
E. Black gram
Choose the correct answer from the options given below :

• A. A, B and C Only
• B. B, C and D Only
• C. B, C and E Only
• D. A, C and E Only

Hint:

To answer such questions, learn to identify common legumes. Most plants referred to as peas, beans, lentils, and grams belong to the legume family and can fix nitrogen symbiotically.

Answer 1

The Correct Option is D

Step 1: Concept Summary:
The question requires identifying plants exhibiting symbiotic nitrogen fixation, a characteristic of the legume family (Fabaceae).
Step 2: Detailed Analysis:
Analysis of each plant option:
A. Pea (\(Pisum sativum\)): A legume forming root nodules housing Rhizobium, a nitrogen-fixing bacteria. (Correct)
B. Lettuce (\(Lactuca sativa\)): A non-legume from the Asteraceae family, lacking nitrogen-fixing symbiosis. (Incorrect)
C. Beans (e.g., \(Phaseolus vulgaris\)): Legumes known for nitrogen fixation via symbiosis with Rhizobium. (Correct)
D. Tomato (\(Solanum lycopersicum\)): A non-legume from the Solanaceae family. (Incorrect)
E. Black gram (\(Vigna mungo\)): A legume pulse crop that actively fixes nitrogen. (Correct)
Step 3: Conclusion:
Pea, Beans, and Black gram are the plants performing symbiotic nitrogen fixation. Therefore, the answer is A, C, and E only.