MCQ
Which of the following statements is correct ?
- ✓Lichens do not grow in polluted areas.
- BAlgal component of lichens is called mycobiont
- CFungal component of lichens is called phycobiont
- DLichens are not good pollution indicators
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$(I)$ It is not autoimmune disorder
$(II)$ Affect neuromusculler junction
$(III)$ Occured due to low $Ca^{++}$ in body fluid
$(IV)$ Paralysis of skeletal muscle is symptome of myasthenia gravis
$(i)$ This group includes diatoms and golden algae.
$(ii)$ They are microscopic and float passively in water currents (plankton).
$(iii)$ Most of them are photosynthetic.
$(iv)$ They have deposits in their habitat; this accumulation over billion of years is referred to as 'diatomaceous earth'.