Match the Column-I with Column-II

Choose the correct answer from the options given below:

A location with luxuriant growth of lichens on the trees indicates that the:

1. Trees are very healthy

2. Trees are heavily infested

3. Location is highly polluted

4. Location is not polluted

Which of the following statement is correct?
a. Fungi prepare food for algae.
b. Fungi provide shelter and absorb mineral nutrients and water for its partner.
c. The algal component is known as mycobiont and fungal component as phycobiont,
d. Lichens are symbiotic associations between algae and fungi which are heterotrophic and autotrophic, respectively.

State True (T) or False (F) to the given statements and select the correct option

     (A) (B) (C)
1.   T    T    F
2.   F    T    F 
3.   F    F    F
4.   T    F    F

All given statements stand true with respect to Lichens, except

1. These are indicators of ${\mathrm{SO}}_2$ pollution, as shown by there abundance in these areas

2. Breathing pores help in gas exchange, these are found on the lower surface of the thallus

3. This association is also termed as helotism

4. Crustose lichens are pioneers of rock succession

Which of the following is not correct about lichens?

1. Lichens are dual organism containing phycobiont and mycobiont

2. They cannot grow in the presence of sulphur dioxide

3. They grow very fast

4. They often grow in most inhospitable places such as barren rocks