Lichen
Lichen: Overview
This Topic covers sub-topics such as Lichens, Crustose Lichens, Fruticose Lichens, Foliose Lichens and, Reproduction in 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 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 _____.
In lichen, the fungal partner take part in sexual reproduction.
Fill in the blank with the correct answer from the bracket.
Asexual reproduction in lichen takes place by _____. (sporangiospores, conidia, pycnidiospores)
Soredia help in gaseous exchange in lichens.
Which of the following structure help in vegetative propagation in lichen?
Assertion: Lichen is especially found on rock, bark or poor soil all over the world.
Reason: They can withstand the extremes in temperatures.
Short twisted strands of hyphae which serve as anchors for lichen are
Out of the following, which lichens are used in litmus paper preparation?
acid obtained from the Usnea and Cladonia species is used as an antibiotic against Gram-positive bacteria.
Some contain anti-carcinogenic properties.
