Which of the following features is NOT characteristic of slime molds during their plasmodial stage?

Which of the following protist release toxins that may even kill fishes and other marine animal?

Diatoms, which are good indicators of water pollution are

Siliceous frustules of diatoms being indestructible, piled up at the bottom of ocean and formed a thick bed over billions of years. Such a thick bed is known as

Which of the following organisms are known as chief producers in the oceans ?

In the five - kingdom classification, Chlamydomonas and chlorella have been included in

Analyse the following statement and identify the correct option given below

I. In diatoms the walls are embedded with silica and thus, the walls are indestructible

II. Diatoms have left behind large amount of cell wall deposits in their habitat, this accumulation over billions of year is referred to as diatomaceous deposition or diatomaceous earth

Which of the following groups belongs to protozoans?

Which group of organisms possesses cell walls composed of two thin overlapping shells that fit together like a box and lid?

Which of the following are the primary producers in the marine ecosystem?

Which one of the following are intracellular obligate parasites?