MCQ
Heart of cockroach is........
- AFour chambered
- ✓Having ostia
- COpen both side
- DAbsent
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(i)$ 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'.