Multiple Choice Questions on Mycorrhiza

1. The symbiotic relationship between fungi and roots of higher plants is called

a) lichen
b) Mycorrhiza
c) Helotism
d) mutualism

2. The advantage of fungus in this association is

a) food
b) protection
c) mineral absorption
d) all of these

3. In mycorrhiza, the fungus may form colonies

a) extracellularly
b) intracellularly
c) both a and b
d) depends on conditions

4. The advantage of plants in this association is

a) food
b) protection
c) increased mineral absorption and disease protection
d) all of these

5. The endomycorrhizas are also called as 

a) hartig nets
b) mat forming mycorrhizas
c) Vesicular Arbuscular Mycorrhiza (VAM)
d) intracellular mycorrhizas

6. The ectomycorrhizas are commonly formed in

a) herbaceous plants
b) woody plants
c) all plants
d) grasses

7. The ectomycorrhizas form an intercellular network in root cortex called

a) arbuscules
b) vescicles
c) hartig net
d) haustoria

8. The characteristic feature of VAM is it penetrates plant cell wall and form

a) spores intracellularly
b) vescicles and dichotomously branched invaginations called arbuscules
c) haustoria
d)massive spore forming structures intracellularly

9. The major advantage of a plant with VAM is

a) increased N2 absorption
b) increased P absorption
c) increased K absorption
d) increased Mn absorption

10. The fungal partner in ectomycorrhiza belongs to the class

a) Basidiomycetes
b) Ascomycetes
c) Zygomycetes
d) all of the above

11. The fungal partner in VAM belongs to the class

a) Basidiomycetes
b) Ascomycetes
c) Zygomycetes
d) Glomeromycetes

12. The endomycorrhizal association is present in

a) 10% of plant families
b) 40% of plant families
c) 85% of plant families
d) less than 5% of plant families

13. Heterokaryosis (presence of many genetically different nuclei in an individual) is a character noticed in

a) endomycorrhizal fungi
b) ectomycorrhizal fungi
c) plants roots
d) herbaceous plant roots

14. The ectomycorrhizae are commonly found in

a) 10% of plant families
b) 40% of plant families
c) 85% of plant families
d) less than 5% of plant families

15. The endomycorrhizae are found in

a) herbaceous plants
b) woody plants
c) grasses
d) all type of plants

16. Wood Wide Web is a term used to denote

a) Mycorrhiza

b) Cuscuta

c) Climbers and Lianas

d) None of these 

17. Vesicular-Arbuscular Mycorrhizae (VAM) is found in ------.

a) Plant roots

b) Tooth lichens

c) AIDS and other immunodeficiency conditions

d) Phylloplane

Answers 

1. b) Mycorrhiza
2. a) food
3. c) both a and b
4. c) increased mineral absorption and disease protection
5. c)Vesicular arbuscular mycorrhizas
6. b) woody plants
7. c) hartig net
8. b) vescicles and dichotomously branched invaginations called arbuscules
9. b) increased P absorption
10. d) all of the above
11. d) Glomeromycetes
12. c) 85% of plant families
13. a) endomycorrhizal fungi
14. a) 10% of plant families
15. d) all type of plants

16. a) Mycorrhiza 

17. a) Plant roots