Which protist group is characterized by a cell wall made of silica?
Dinoflagellates
Diatoms
Slime moulds
Euglenoids
Related Questions
Organism without cell wall & can respire anaerobically is :
Slime moulds
BGA
Mycoplasma
Yeast
The thalloid body of a slime mould (Myxomycetes) is known as
Protonema
Plasmodium
Fruiting body
Mycelium
I. Noctiluca is a colourless dinoflagellates, which is an important constituent of coastal plankton of both temperate and tropical seas
II. The cellular slime moulds have the characters of both plants and animals
Which of the statements given above is/ are correct?
Only I
Only II
I and II
None of the above
Cell wall has stiff Cellulose plates on the surface of Cells in:
Gonyaulax
Euglena
Diatoms
Slime Moulds
Dinoflagellates have
Two flagella which lies longitudinally
Only one flagellum in the transverse groove between the cell plates
Only one flagellum in the longitudinal groove between the cell plates
One flagella lies longitudinally and the other transversely in a furrow between the wall plates
Plant like nutrition is present in
Amoeba
Paramecium
Euglena
Plasmodium
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
Red sea
Diatomaceous earth
Pseudorocks
Red tides
Which group of protists contributes significantly to the formation of red tides, often leading to marine animal mortality?
Diatoms
Dinoflagellates
Euglenoids
Ciliates
Which one of the following does not belong to kingdom-Monera?
Mycoplasma
Achaebacteria
Slime mould
Eubacteria
Select the wrong statement.
Diatoms are microscopic and float passively in water.
The walls of diatoms are easily destructible.
‘Diatomaceous earth’ is formed by the cell walls of diatoms.
Diatoms are chief producers in the oceans.
