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Both algae and fungi are not independent...

Both algae and fungi are not independently capable of initiating seral changes on bare rocks but lichens can do so because they

A

Adapt suitably to mesic conditions

B

Are a combination of alge and fungi

C

Can secrete acids for weathering

D

Do not require much sunlight

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The correct Answer is:
C
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Lichens are called pioneer colonisers of bare rock. How can they help in formation of soil?

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TRUEMAN BIOLOGY-ECOSYSTEM -MCQ
  1. The tendency towards increased variety and density of species at commu...

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  2. Climax communities

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  3. Both algae and fungi are not independently capable of initiating seral...

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  4. Math List-I with List-II and select the correct answer using the codes...

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  5. Agroecosystem is unstable because of

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  6. Primary consumers in detritus food chain are

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  7. Putrefying organisms are

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  8. A pea-cock eats snakes which eat frogs. These eat hoppers which in tur...

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  9. Which of the food chain directly depends on solar radiations?

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  10. Converters or transducer organisms in the food chain are called

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  11. In parasitic food chain, the pyramid of number is

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  12. Ascending trophic level in grazing food chain pyramid represents

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  13. Phytoplankton are dominant in

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  14. Which ones are reservoirs of Phosphorus and Nitrogen cycles respective...

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  15. An organism contains carbon molecules which have passed through three ...

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  16. Identify the following food chain: Dead animal Blow fly maggots rarr C...

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  17. Ecological efficiency is

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  18. Breakdown of detritus into smaller particles by earthworm is a process...

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  19. Decomposers like fungi and bacteria are (i) Autotrophs (ii) Heterotr...

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  20. The process of mineralisation by micro organisms helps in the release ...

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