
a) mychorrhizha2. Many scientists consider algal-fungal relationship in lichen as ‘helotism’. Helotism is a
b) lichen
c) VAM
d) mutualism
a) a kind of symbiotic association3. The fungal partner in lichen is called mycobiont whereas algal partner is called
b) a kind of mutualism
c) master-slave relationship
d) master-master relationship
a) glycobiont4. The study of lichens is called
b) algobiont
c) phycobiont
d) often referred as algal partner
a) phycology5. More than 95% of the lichens, the fungal partner belongs to the class
b) mycology
c) lichology
d) lichenology
a) ascomycetes6. The benefit of algae in this association is
b) basidiomycetes
c) zygomycetes
d) mastigomycetes
a) food7. In lichens, sexual reproduction is carried out by
b) vitamins
c) growth substances
d) protection
a) algae8. The major group of algae involved in lichen formation is
b) fungi
c) both algae and fungi
d) fungi only
a) red algae9. Usnea is a
b) brown algae
c) blue green algae
d) all

a) foliose lichen10. Lichens are the major pollution indicators of
b) fruticose lichen
c) crustose lichen
d) filamentous lichen
a) SO211. If the fungal partner belongs to Ascomycetes, then called
b) NO2
c) mercury
d) CO
a) ascomycetes12. Lichens that are rock dwellers with xerophytic adaptations are called
b) ascomycetes lichen
c) lichen
d) ascolichen
a) lignicolous13. Terrestrial species that grow in soil are called
b) terricolous
c) saxicolous
d) corticolous
a) lignicolous14. Leprose lichens are
b) terricolous
c) saxicolous
d) corticolous
a) crust like15. Graphis is a
b) leaf like
c) pendulous
d) scale like

a) foliose lichenAnswers:
b) fruticose lichen
c) crustose lichen
d) filamentous lichen
1. b) lichen
2. c) master-slave relationship
3. c) phycobiont
4. d) lichenology
5. a) ascomycetes
6. d) protection
7. d) fungi only
8. c) blue green algae
9. b) fruticose lichen
10. a) SO2
11. d) ascolichen
12. c) saxicolous
13. b) terricolous
14. d) scale like
15. c) crustose lichen