MCQ
Azolla enriches rice fields with nitrogen due to its association with
- ✓Anabaena
- BNostoc
- CRhizobium
- DFrankia
✓
Answer
Correct option: A.
Anabaena
a
It’s obvious.
It’s obvious.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Select the correct statements for algae
A. Starch, Mannitol and laminarin are a type of stored food
B. Fucoxanthin and phycoerythrin are a type of pigment
C. Flagellated gametes present in chlorophyceae and rhodophyceae
D. Chlorophyll 'a' is not present all classes of algae
A. Starch, Mannitol and laminarin are a type of stored food
B. Fucoxanthin and phycoerythrin are a type of pigment
C. Flagellated gametes present in chlorophyceae and rhodophyceae
D. Chlorophyll 'a' is not present all classes of algae
Oxyhemoglobin dissociates into oxygen and deoxyhemoglobin at
When the head of humerus fits into glenoid cavity, joint is
Joint between femur and pelvic girdle is
Cardiac cycle is a cyclic event that occur in
The vertebratrial canal is present in the vertebrae that are
The diagram given here is the standard $ECG$ of a normal person. The Pwave represents the
→Which one occurs in mollouscs but not in echinoderms
What is found in the periphery of spinal cord
An 'antigen' is