Lichen
Lichen: Overview
This Topic covers sub-topics such as Lichens and Crustose Lichens
Important Questions on Lichen
Lichens are symbiotic associations between a fungus and algae. Most of these lichens consist of:
Which one of the following is not true about lichens?
Lichens are well known combination of an alga and a fungus where fungus has –
Lichens indicate SO2 pollution because they –
Which of the following organisms are indicator of SO2 pollution?
Which of the following lichen contains lecanoric acid?
Which of the following is incorrect about lichens?
Which one of the following is heterotrophic component in lichen
In lichen, the algal component is called _____ and fungal component is called _____.
The lichen that grows on wood is called
Graphis is a genus of lichen that possesses leaf-like thallus.
Write the characteristics of Crustose lichens.
Assertion: Lichen is especially found on rock, bark or poor soil all over the world.
Reason: They can withstand the extremes in temperatures.
Which of the following is the use of lichens in case of pollution
The algal component is known as _____and fungal component as mycobiont, which are autotrophic and heterotrophic, respectively.
The pioneers of vegetation on rocks are
Short twisted strands of hyphae which serve as anchors for lichen are
