Which of the following statements are correct in context to diatoms?
i) They are chief ‘producers’ in the oceans.
ii) Their cell walls are indestructible.
iii) Most of them have two flagella.
iv) They form fruiting bodies.
Most of the dinoflagellates have two flagella; one lies longitudinally and the other transversely in a furrow between the wall plates but absent in diatoms.
Fruiting bodies are seen in slime moulds.