Biology MCQs
Biology MCQs Test Preparation | Latest 2025 Quiz FPSC, NTS, KPPSC, PPSC, SPSC, BPSC, OTS, UTS, PTS, CTS, ATS, ETEA MCQs Test Questions.
Locomotion in diatoms is carried out with the help of__________?
A: Valve
B: Raphe
C: Pseudopodium
D: Cilia or flagella
Raphe
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
Fucoxanthin, diatoxanthin, diadinoxanthin
Diatoms stay afloat due to___________?
A: Flagella
B: Stored lpids
C: Pseudopodia
D: All of these
Stored lpids
Diatomaceous earth is used for making __________?
A: Fertilizers
B: Weedicides
C: Insecticides
D: Fire proof bricks
Fire proof bricks
Cell wall is richly impregnated with silica in__________?
A: Rhodophyta
B: Phaeophyta
C: Baciliariophyta
D: Euglenophyta
Baciliariophyta
The cell wall is usually composed of two overlapping halves called epitheca and hypotheca in__________?
A: Diatoms
B: Desmids
C: Pyrrophyta
D: Chlorophyta
Diatoms
Unlike other algae, diatoms do not readily decay due to___________?
A: Nonliving cells
B: Siliceous wall
C: Mucilaginous wall
D: Water proof cell
Siliceous wall
Cell wall is extremely well preserved in fossil specimens in__________?
A: Diatoms
B: Dinoflagellates
C: Slime moulds
D: None of these
Diatoms