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Nitrogen fixation in root nodules of Alnus is brought about by:
Options
(a) Bradyrhizobium
(b) Clostridium
(c) Frankia
(d) Azorhizobium
Correct Answer:
Frankia
Explanation:
The most common symbiotic association of legume and bacteria on roots is as nodules, which are small outgrowth on the roots. The microbe Frankia is symbiotic in root nodules of several non-leguminous plants like Casurina and Alnus. Both Rhizobium and Frankia are free lilving in soil but can fix atmospheric nitrogen as symbionts.
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Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Plant Physiology
(28)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Thorn of Bougainvillea and tendril of cucurbita are example of
- Which of the following characteristics represent Inheritance of blood groups
- In the cell walls of the guard cells cellulose microfibrils are oriented
- F₂ generation in a Mendelian cross showed that both genotypic and phenotypic ratios
- Klinefelter’s syndrome is caused
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Plant Physiology (28)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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