biological classification

Question 1

Under unfavorable conditions, some bacteria can form
a) Cysts
b) Spores
c) Heterocysts
d) Filaments

Answer 1

b) Spores

Question 2

Photosynthetic autotrophic bacteria like cyanobacteria contain:
a) Chlorophyll a
b) Chlorophyll b
c) Chlorophyll c
d) Chlorophyll d

Answer 2

a) Chlorophyll a

Question 3

Protists can reproduce:
a) Only asexually
b) Only sexually
Protists can reproduce:
c) Both asexually and sexually
d) By binary fission only

Answer 3

c) Both asexually and sexually

Question 4

Dinoflagellates are primarily:
a) Terrestrial
b) Aquatic
c) Parasitic
d) Symbiotic

Answer 4

b) Aquatic

Question 5

Which of the following is NOT a use of diatomaceous earth?
a) Polishing
b) Filtration of oils and syrups
c) Fertilizer production
d) Insulation

Answer 5

Fertilizer production

Question 6

Dinoflagellates obtain energy primarily through:
a) Heterotrophy
b) Chemosynthesis
c) Photosynthesis
d) Parasitism

Answer 6

c) Photosynthesis

Question 7

The stiff cellulose plates on the outer surface of dinoflagellates provide:
a) Mobility
b) Structural support
c) Reproductive capability
d) Nutrient absorption

Answer 7

b) Structural support

Question 8

Under suitable conditions, slime moulds form an aggregation called:
a) Pseudoplasmodium
b) Fruiting body
c) Plasmodium
d) Cyst

Answer 8

c) Plasmodium

Question 9

All protozoans are:
a) Autotrophs
b) Heterotrophs
c) Saprotrophs
d) Mixotrophs

Answer 9

b) Heterotrophs

Question 10

Slime moulds are classified as:
a) Photosynthetic protists
b) Saprophytic protists
c) Parasitic protists
d) Autotrophic protists

Answer 10

b) Saprophytic protists

Question 11

Which of the following protozoans has silica shells on their surface?
a) Freshwater amoeboid protozoans
b) Marine amoeboid protozoans
c) Flagellated protozoans
d) Sporozoans

Answer 11

b) Marine amoeboid protozoans

Question 12

Paramecium is an example of a:
a) Amoeboid protozoan
b) Flagellated protozoan
c) Ciliated protozoan
d) Sporozoan

Answer 12

c) Ciliated protozoan

Question 13

The white spots on mustard leaves are due to:
a) Algal infection
b) Bacterial infection
c) Parasitic fungus
d) Viral infection

Answer 13

c) Parasitic fungus

Question 14

Which of the following fungi is used to make bread and beer?
a) Penicillium
b) Puccinia
c) Yeast
d) Aspergillus

Answer 14

c) Yeast

Question 15

Which structure is not characteristic of Phycomycetes?
a) Coenocytic mycelium
b) Aseptate hyphae
c) Motile zoospores
d) Septate mycelium

Answer 15

d) Septate mycelium

Question 16

What type of reproduction involves zoospores in Phycomycetes?
a) Sexual reproduction
b) Vegetative reproduction
c) Asexual reproduction
d) Parthenogenesis

Answer 16

c) Asexual reproduction

Question 17

Which of the following is an example of Phycomycetes?
a) Aspergillus
b) Penicillium
c) Rhizopus
d) Saccharomyces

Answer 17

c) Rhizopus

Question 18

Which of the following is NOT a member of Basidiomycetes?
a) Agaricus
b) Ustilago
c) Puccinia
d) Saccharomyces

Answer 18

d) Saccharomyces