Which of the following are most suitable indicators of SO₂ pollution in the environment?
1. Lichens
2. Conifers
3. Algae
4. Fungi

Which one of the following matches is correct? 

The guts of a cow and a buffalo possess:

1. Fucus sp
2. Chlorella sp
3. methanogens
4. cyanobacteria

Five kingdom system of classification suggested by R.H. Whittaker is based on:

1. Complexity of body organisation

2. Mode of reproduction

3. Mode of nutrition

4. All of the above

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 one of the following living organisms completely lacks a cell wall?

1. Cyanobacteria

2. Sea- fan (Gorgonia)

3. Saccharomyces

4. Coelenterata algae

The motile bacteria are able to move by:

1. fimbriae

2. flagella

3. cilia

4. pili

Which pair of the following belongs to Basidiomycetes?

1. Bird's nest fungi and Pufballs

2. Puffballs and Claviceps

3. Peziza and Stinkhorns

4. Morchella and Mushrooms

The thalloid body of a slime mould (Myxomycetes) is known as:
1. protonema
2. Plasmodium
3. fruiting body
4. mycelium

The bacterium (Clostridium botulinum) that causes botulism is:

1. a facultative anaerobe

2. an obligate anaerobe

3. a facultative aerobic

4. an obligate aerobic