MCQ
Coralloid roots have a symbiotic association with
- APhotosynthetic green algae
- ✓Nitrogen-fixing cyanobacteria
- CFungus
- DPhotosynthetic brown algae
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$I.$ Receptor sites on sarcolemma
$II.$ Nerve impulse
$III.$ Release of $\mathrm{Ca} \hat{\imath}$
$IV.$ Acetylcholine release
$V.$ Shortening of sarcomere
$VI.$ Synaptic cleft
$VII.$ Spread of impulse over sarcolemma on T-tubule
The correct option is