Diatoms build their cell walls from
ACalcium carbonate
BCellulose fibres
CChitin layers
DSilicon dioxide
Answer & Solution
Correct answer: D. Silicon dioxide
Diatoms and sea sponges use silicon dioxide for their walls and skeletons.
Related questions
The high reactivity of halogens is mainly due to theirTennessine was made by bombarding berkelium-249 withWhich atom has the highest electron affinity?Halogen lamps use a filament made ofThe active ingredient of most fabric bleaches isIodine dissolves in aqueous KI because it forms theChlorine dissolved in water forms hydrochloric acid andFluorine reacts vigorously with water to give HF and