Golden brown colour of diatoms is due to presence of__________?
(A) Mycoxanthin, mucoxanthin and myxoxanthophylls
(B) Alpha and beta carotenes and myxoxanthin
(C) Fucoxanthin, diatoxanthin, diadinoxanthin
(D) None of the above
Locomotion in diatoms is carried out with the help of__________?
(A) Valve
(B) Raphe
(C) Pseudopodium
(D) Cilia or flagella
Diatomaceous earth is used for making __________?
(A) Fertilizers
(B) Weedicides
(C) Insecticides
(D) Fire proof bricks
Diatoms stay afloat due to___________?
(A) Flagella
(B) Stored lpids
(C) Pseudopodia
(D) All of these
Oil body is found in the cells of___________?
(A) Diatoms
(B) Slime moulds
(C) Chlorophycean forms
(D) None of the these
Which of the following is a selectively permeable membrane?
(A) cell wall
(B) cytoplasm
(C) cell membrane
(D) none of these
The light microscope can make the object_________times bigger?
(A) 10 times
(B) 100 times
(C) 1000 times
(D) 10000 times