Q901
Match the following columns: Column I (Rhizobium sp.) Column II (Crops) a. R. lupini 1. Lupine group b. R. trifoli 2. Clover group c. R. japonicum 3. Soybean d. R. meliloti 4. Alfa-alfa
Match the following columns:
| Column I (Rhizobium sp.) | Column II (Crops) |
| a. R. lupini | 1. Lupine group |
| b. R. trifoli | 2. Clover group |
| c. R. japonicum | 3. Soybean |
| d. R. meliloti | 4. Alfa-alfa |
A.
a-2, b-3, c-4, d-1
B.
a-3, b-2, c-1, d-4
C.
a-1, b-4, c-2, d-3
D.
a-1, b-2, c-3, d-4
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Rhizobium lupini belongs to the Lupine group of crops as this was isolated from lupine nodules. Lupine is the genus of 200 species of herbaceous and woody plants.Rhizobium trifoli belongs to Trifolium (clover) group of crops. It is the microsymbiont of Trifolium species, which are valuable agricultural forage legumes.
Rhizobium japonicum is a species of legumes-root nodulating, microsymbiotic nitrogen-fixing bacteria. It is associated with soybean species.
Rhizobium meliloti is found in association with alfa alfa crop plantation. These are aerobic, gram-negative, and diazotrophic species of bacteria. It fixes atmospheric nitrogen into ammonia for their legume symbionts, such as alfa-alfa.