1 Which of the following groups are included under Kingdom Protista?
a) Chrysophytes, Dinoflagellates, Euglenoids, Slime moulds, Protozoans
b) Bacteria, Archaea, Fungi, Plantae
c) Algae, Fungi, Plantae, Animalia
d) Viruses, Bacteria, Archaea, Eukarya
2 Which of the following statements about diatoms is incorrect?
a) They are photosynthetic
b) Their cell walls form two thin overlapping shells embedded with silica
c) They have left behind large amounts of cell wall deposits known as diatomaceous earth
d) They primarily inhabit terrestrial environments
3 Assertion (A): Red tides are caused by rapid multiplication of red dinoflagellates
Reason (R): Toxins released by dinoflagellates during red tides can kill marine animals like fishes
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
4 Match the following groups with their characteristics:
|
Group |
Characteristic |
|
A Euglenoids |
1 Have silica shells |
|
B Dinoflagellates |
2 Have a protein-rich layer called pellicle |
|
C Amoeboid protozoans |
3 Have stiff cellulose plates |
|
D Ciliated protozoans |
4 Move using pseudopodia |
a) A-2, B-3, C-4, D-1
b) A-2, B-1, C-3, D-4
c) A-2, B-3, C-1, D-4
d) A-2, B-3, C-4, D-1
5 Which of the following is true for slime moulds?
a) They are primarily photosynthetic
b) They form fruiting bodies during favorable conditions
c) They are saprophytic protists
d) They have a rigid cell wall
6 Which organism is known for causing malaria?
a) Trypanosoma
b) Entamoeba
c) Plasmodium
d) Paramoecium
7 Protozoans are primarily:
a) Autotrophs
b) Heterotrophs
c) Chemotrophs
d) Phototrophs
8 Which of the following protozoans moves using pseudopodia?
a) Trypanosoma
b) Euglena
c) Paramoecium
d) Amoeba
9 Dinoflagellates are known for:
a) Being predominantly terrestrial
b) Having two flagella
c) Forming silica shells
d) Producing methane in marshy areas
10 Euglenoids can behave as heterotrophs when:
a) They are exposed to sunlight
b) They are deprived of sunlight
c) They are in marine environments
d) They are in extremely salty environments
Answers:
1 a) Chrysophytes, Dinoflagellates, Euglenoids, Slime moulds, Protozoans
2 d) They primarily inhabit terrestrial environments
3 a) Both A and R are true and R is the correct explanation of A
4 d) A-2, B-3, C-4, D-1
5 c) They are saprophytic protists
6 c) Plasmodium
7 b) Heterotrophs
8 d) Amoeba
9 b) Having two flagella
10 b) They are deprived of sunlightA
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