MCQ
Azolla enriches rice fields with nitrogen due to its association with
- ✓Anabaena
- BNostoc
- CRhizobium
- DFrankia
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(I)$ Vertebrate hearts.
$(II)$ Vertebrate brains
$(III)$ Thorn and tendrils of Bougainvillea andcucurbita respectively
$(IV)$ Vertebrate limbs.
The correct combination is